M.E/M.Tech, B.E/B.Tech Projects

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Speak to: +91-9940798943 Write to me: [email protected], [email protected]

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ABOUT US

CoreTronix is a new concept in developing students into industrial ready

professionals. Managed exclusively by professionals from the industry, it

incorporates innovative teaching methods to enhance the employability of new

college graduates and IT/BPO engineers seeking a career change. It’s time to

submit your final year project abstracts/Synopsis.

CoreTronix provides project ideas and abstracts with world class quality. A

dedicated team of professionals and our committed experts will be available all

the time to assist students. CoreTronix offers IEEE Application Projects under

various IEEE Transactions on POWER SYSTEMS – POWER ELECTRONICS –

INSTRUMENTATION – GRID COMPUTING – SUSTAINABLE ENERGY –

INDUSTRIAL ELECTRONICS – ELECTRICAL MACHINE DRIVES, etc and also

Students can bring their own idea with IEEE papers.

Projects are available for M.E/M.Tech (Power System Engineering & Drives,

Power Electronics & Drives, and Applied Electronics), B.E/B.Tech (EEE, ECE

and E&I), DIPLOMA (Electrical and Electronics), and School Students. Project

Supports & Deliverable @CoreTronix – Project Abstract, IEEE Base

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Assistance for VIVA, Project Diagram/Circuit Block, Project Source Code, Project

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and Project Hardware Kit.

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POWER ELECTRONICS

POWER ELECTRONICS – SIMULATION

WITH HARDARE KIT

PROJECT

CODE

PROJECT TITLES YEAR

CPPE 01 A Novel ZVT-ZCT-PWM Boost Converter 2013

CPPE 02 Analysis, Design, and Experimental Results of a Novel Soft-

Switching Snubberless Current-Fed Half-Bridge Front-End

Converter-Based PV Inverter

2013

CPPE 03 Bridgeless SEPIC Converter with a Ripple-Free Input Current 2013

CPPE 04 High Performance Voltage Fed AC-DC Full-Bridge Single-

Stage PFC with Reduced DC Bus Capacitor

2013

CPPE 05 Low-Common Mode Voltage H-Bridge Converter with

Additional Switch Legs

2013

CPPE 06 Analysis and design of a Push-Pull Quasi-Resonant Boost

Power Factor Corrector

2013

CPPE 07 A Modified High-Efficiency LLC Converter with Two

Transformers For Wide Input-Voltage Range Applications

2013

CPPE 08 High Performance Voltage Fed AC-DC Full-Bridge Single-

Stage PFC with Reduced DC Bus Capacitor

2013

CPPE 09 High-Efficiency Asymmetrical Half-Bridge Converter without

Electrolytic Capacitor for Low-Output-Voltage AC–DC LED

Drivers

2013

CPPE 10 Decoupling Capacitor Selection in DCM Flyback PV

Microinverter Considering Harmonic Distortion

2013

CPPE 11 A Bridgeless Boost Rectifier for Low-Voltage Energy

Harvesting Applications

2013

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CPPE 12 Design and Implementation of a Unity Power Factor Fuzzy

Battery Charger using an Ultrasparse Matrix Rectifier

2013

CPPE 13 Novel Zero-voltage and Zero-current Switching (ZVZCS)

PWM Three-level DC/DC Converter Using Output Coupled

Inductor

2013

CPPE 14 An Integrated Boost Resonant Converter for Photovoltaic

Applications

2013

CPPE 15 High-Efficiency Single Switch Single- Input Multiple-Output

DC–DC Converter

2013

CPPE 16 A Modified Single-Phase Quasi-Z-Source AC–AC Converter 2012

CPPE 17 Improved Trans-Z-Source Inverter With Continuous Input

Current and Boost Inversion Capability

2013

CPPE 18 A High Step-Up Three-Port DC–DC Converter for Stand-

Alone PV/Battery Power Systems

2013

CPPE 19 Analysis of Half-Wave Class DE Low dv/dt Rectifier at Any

Duty Ratio

2014

CPPE 20 An Analytical Steady-State Model of LCC type Series–

Parallel Resonant Converter With Capacitive Output Filter

2014

1. A Novel ZVT-ZCT-PWM Boost Converter

Abstract: A new boost converter with an active Snubber cell is proposed. The active

Snubber cell provides main switch to turn ON with zero-voltage transition (ZVT) and to

turn OFF with zero-current transition (ZCT). The proposed converter incorporating this

Snubber cell can operate with soft switching at high frequencies. Also, in this converter

all semiconductor devices operate with soft switching. There is no additional voltage

stress across the main and auxiliary components. The converter has a simple structure,

minimum number of components, and ease of control as well.

2. Analysis, Design, and Experimental Results of a Novel Soft-Switching

Snubberless Current-Fed Half-Bridge Front-End Converter-Based PV Inverter

Abstract: A new novel Snubberless current fed half-bridge front-end isolated dc/dc

converter-based inverter for photovoltaic applications. It is suitable for grid-tied (utility

interface) as well as off-grid (standalone) application based on the mode of control. This

converter attains clamping of the device voltage by secondary modulation, thus

eliminating the need of Snubber or active-clamp. Zero-current switching or natural

commutation of primary devices and zero-voltage switching of secondary devices is

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achieved. Soft-switching is inherent owing to the proposed secondary modulation and is

maintained during wide variation in voltage and power transfer capacity and thus is

suitable for photovoltaic (PV) applications.

3. Bridgeless SEPIC Converter with a Ripple-Free Input Current

Abstract: Conventional power factor correction (PFC) single ended primary inductor

converter (SEPIC) suffers from high conduction loss at the input bridge diode. To solve

this problem, a bridgeless SEPIC converter with ripple-free input current is proposed. In

the proposed converter, the input bridge diode is removed and the conduction loss is

reduced. In addition, the input current ripple is significantly reduced by utilizing an

additional winding of the input inductor and an auxiliary capacitor. Similar to the

conventional PFC SEPIC converter, the input current in a switching period is

proportional to the input voltage and near unity power is achieved.

4. High Performance Voltage Fed AC-DC Full-Bridge Single-Stage PFC with

Reduced DC Bus Capacitor

Abstract: Full-Bridge Single-Stage, FBSS, AC-DC converters allow regulating both the

output voltage and the input current that achieves a near sinusoidal waveform using only

the four bridge transistors. Independently of this feature, these converters still need to be

optimized in order to become an interesting and attractive solution for modern Switch

Mode Power Supplies with PFC function. One of the most important improvements

needed is the downsizing of the DC bus capacitor, with the inherent cost reduction. This

action introduces complex issues in the regulation of the input current and it is also

responsible for the generation of high output voltage ripple. These consists of a set of

power circuit optimizations and control techniques in a Full Bridge Single-Stage PFC

converter that solves the referred issues in order to enable the reduction of the DC bus

capacitor’s size and cost.

5. High-Efficiency Hybrid Full-Bridge–Half-Bridge Converter with Shared ZVS

Lagging Leg and Dual Outputs in Series

Abstract: A novel soft-switching hybrid converter combining the phase-shift full-bridge

(FB) and half-bridge (HB) LLC resonant converters’ configuration with shared zero-

voltage switching (ZVS) lagging leg is proposed to ensure the switches in the lagging leg

operating at fully ZVS condition. The dual outputs of the proposed hybrid FB–HB

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converter are connected in series and the whole dc-output voltage can be regulated by the

PWM phase-shift control within the desired voltage range. A resonant circuit is used in

the secondary side of the FB converter to reset the primary current during the

freewheeling period, as well as to transfer more input energy and clamp secondary

rectifier voltage.

6. Low-Common Mode Voltage H-Bridge Converter with Additional Switch Legs

Abstract: H-bridge converter with additional switch legs (HA converter) and its offspring

circuit are proposed in this paper with the intent to reduce the common mode noise. The

proposed topology connects grounds of the input and output terminals, which gives zero

common mode current in the ideal case. The operation of the proposed circuit is flexible

and allows for the circuit to be capable of both ac–dc and dc–ac conversions. The

proposed topology is especially advantageous when it is applied to the photovoltaic

power conditioning system in dc distribution system or stand-alone power system

because they include large stray capacitances and are prone to common mode EMI.

7. Analysis and Design of a Push–Pull Quasi Resonant Boost Power Factor

Corrector

Abstract: A novel power-factor corrector (PFC), which is mainly composed of two-phase

transition-mode (TM) boost-type power-factor correctors (PFCs) and a coupled inductor.

By integrating two boost inductors into one magnetic core, not only the circuit volume is

reduced, but also the operating frequency of the core is double of the switching

frequency. Comparing with single-phase TM boost PFC, both the input and output

current ripples of the proposed PFC can be reduced if the equivalent inductance of the

coupled inductor equals the inductance of single-phase TM boost PFC. Therefore, both

the power-factor value and the power density are increased. The proposed topology is

capable of sharing the input current and output current equally. The advantages of a TM

boost PFC, such as quasi-resonant (QR) valley switching on the switch and zero-current

switching (ZCS) of the output diode, are maintained to improve the overall conversion

efficiency.

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8. A Modified High-Efficiency LLC Converter with Two Transformers for Wide

Input Voltage Range Applications

Abstract: A modified LLC converter with two transformers in series, which has four

operation configurations, covering the range of four times the minimum input voltage. To

optimize the proposed LLC converter in an attempt to achieve good efficiency, a

numerical method is developed based on the LLC converter’s steady-state equations. In

order to minimize the magnetizing current and thus minimize the conduction and core

losses, an optimal objective is proposed to find the maximum magnetizing inductance.

9. High-Efficiency Asymmetrical Half-Bridge Converter without Electrolytic

Capacitor for Low-Output-Voltage AC–DC LED Drivers

Abstract: Due to their high reliability and luminous efficacy, high-brightness light-

emitting diodes are being widely used in lighting applications, and therefore, their power

supplies are required to have also high reliability and efficiency. A very common

approach for achieving this in ac–dc applications is using a two-stage topology. The

power factor corrector boost converter operating in the boundary conduction mode is a

very common converter used as first stage. It is normally designed without electrolytic

capacitors, improving reliability but also increasing the low-frequency ripple of the

output voltage. The asymmetrical half-bridge (AHB) is a perfect option for the second

stage as it has very high efficiency, it operates at constant switching frequency, and its

output filter is small.

10. Decoupling Capacitor Selection in DCM Flyback PV Micro-inverters

considering Harmonic Distortion

Abstract: Electrolytic capacitors as a decoupling reservoir restrict the lifetime of

photovoltaic (PV) micro-inverters. This has led to the development of several improved

decoupling circuits that can reduce the capacitor value to allow the use of non-electrolytic

types. The minimum decoupling capacitor value for the proper operation of discontinuous

conduction mode fly back PV micro-inverters is analyzed by taking into account the total

harmonic distortion (THD) and PV power utilization ratio. A decoupling capacitor

selection method for single-stage and two-stage fly-back inverters is proposed.

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11. A Bridgeless Boost Rectifier for Low-Voltage Energy Harvesting Applications

Abstract: A single-stage ac–dc power electronic converter is proposed to efficiently

manage the energy harvested from electromagnetic microscale and mesoscale generators

with low-voltage outputs. The proposed topology combines a boost converter and a buck-

boost converter to condition the positive and negative half portions of the input ac

voltage, respectively. Only one inductor and capacitor are used in both circuitries to

reduce the size of the converter.

12. Design and Implementation of a Unity Power Factor Fuzzy Battery Charger

using an Ultrasparse Matrix Rectifier

Abstract: A novel unity power factor fuzzy battery charger conception based on an

ultrasparse matrix rectifier (USMR). The advantages of the proposed converter are low

harmonic distortion in absorbed currents and nearly unity power factor over a wide

operating output power range. Its circuit has only three switching components and low-

energy-conversion loss. This reduces the cost and enhances the system’s efficiency for

high voltage battery. Thus, the proposed fuzzy logic controller improves the line power

quality and delivers admissible output power to the battery.

13. Novel Zero-voltage and Zero-current Switching (ZVZCS) PWM Three-level DC-

DC Converter Using Output Coupled Inductor

Abstract: A novel zero-voltage and zero-current switching (ZVZCS) pulse-width

modulation (PWM) half-bridge (HB) three-level (TL) dc/dc converter is proposed.

Compared with traditional ZVZCS PWM TL dc/dc converters, this converter does not

include auxiliary resonant circuits. It can achieve zero-voltage switching (ZVS) for the

leading switches and approximate zero-current switching (ZCS) for the lagging switches

with the aid of the transformer parasitic inductance, Snubber capacitors and tapped-

inductor type smoothing filter. This converter can reduce the voltage and current spikes

of the power switches as well as the primary circulating current loss effectively. The

operation principle of the novel converter and the soft-switching implementation

condition are analyzed according to equivalent circuits under different stages.

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14. An Integrated Boost Resonant Converter for Photovoltaic Applications

Abstract: Mobile applications necessitate nowadays huge digital resources. Power

management of a digital systems-on-chip is based on dynamic voltage scaling. DC/DC

converters used to supply the digital system-on-a-chips are facing stringent constraints

with respect to load transients, line transients, and reference tracking. Hysteretic control

is known as the most convenient control scheme with a fair tradeoff between transient

performances, analog implementation and power consumption. Fixed-switching

frequency hysteretic control has been experimented as well as full sliding mode control.

Transient performances are reduced due to latencies introduced in the switching

frequency control. A new analog implementation of the sliding-mode control is presented

here with switching frequency control using a particular analog phase-locked loop but

preserve transient performances. The dc/dc converter is implemented in CMOS 130 nm.

The switching frequency range has been voluntarily limited and excludes the possible

integration of passive components.

15. High-Efficiency Single Switch Single- Input Multiple-Output DC–DC Converter

Abstract: The aim of this study is to develop a high-efficiency single-input multiple-

output (SIMO) dc–dc converter. The proposed converter can boost the voltage of a low-

voltage input power source to a controllable high-voltage dc bus and middle-voltage

output terminals. The high-voltage dc bus can take as the main power for a high-voltage

dc load or the front terminal of a dc–ac inverter. Moreover, middle-voltage output

terminals can supply powers for individual middle-voltage dc loads or for charging

auxiliary power sources (e.g., battery modules). In this study, a coupled-inductor based

dc–dc converter scheme utilizes only one power switch with the properties of voltage

clamping and soft switching, and the corresponding device specifications are adequately

designed.

16. A Modified Single-Phase Quasi-Z-Source AC–AC Converter

Abstract: A modified single-phase quasi-Z-source ac–ac converter is proposed in this

paper. The proposed converter has the main features in that the output voltage can be

bucked or boosted and be both in-phase and out-of-phase with the input voltage. The

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input voltage and output voltage share the same ground, the size of a converter is

reduced, and it operates in a continuous current mode. A safe-commutation strategy for

the modified single-phase quasi-Z-source ac–ac converter is used instead of a Snubber

circuit.

17. Improved Trans-Z-Source Inverter with Continuous Input Current and Boost

Inversion Capability

Abstract: This paper deals with a new family of high boost voltage inverters that improve

upon the conventional trans-Z-source and trans-quasi-Z-source inverters. The improved

trans-Z-source inverter provides continuous input current and a higher boost voltage

inversion capability. In addition, the improved inverter can suppress resonant current at

startup, which might destroy the device. In comparison to the conventional trans-Z-

source/-trans-quasi-Z-source inverters, for the same transformer turn ratio and input and

output voltages, the improved inverter has a higher modulation index with reduced

voltage stress on the dc link, lower current stress flow on the transformer windings and

diode, and lower input current ripple. In order to produce the same input and output

voltage with the same modulation index, the improved inverter uses a lower transformer

turn ratio compared to the conventional inverters. Thus, the size and weight of the

transformer in the improved inverter can be reduced.

18. A High Step-Up Three-Port DC–DC Converter for Stand-Alone PV/Battery

Power Systems

Abstract: A three-port dc–dc converter integrating photovoltaic (PV) and battery power

for high step-up applications is proposed in this paper. The topology includes five power

switches, two coupled inductors, and two active-clamp circuits. The coupled inductors

are used to achieve high step-up voltage gain and to reduce the voltage stress of input

side switches. Two sets of active-clamp circuits are used to recycle the energy stored in

the leakage inductors and to improve the system efficiency. The operation mode does not

need to be changed when a transition between charging and discharging occurs.

Moreover, tracking maximum power point of the PV source and regulating the output

voltage can be operated simultaneously during charging/discharging transitions. As long

as the sun irradiation level is not too low, the maximum power point tracking (MPPT)

algorithm will be disabled only when the battery charging voltage is too high.

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19. Analysis of Half-Wave Class DE Low dv/dt Rectifier at Any Duty Ratio

Abstract: Class DE low dv/dt rectifiers realize high-frequency high-efficiency

rectification and low-diode voltage stress which is no more than the output voltage. Half-

wave Class DE low dv/dt rectifier, which is one of the Class DE rectifiers, realizes the

common ground between the input port and the output port. The half-wave Class DE low

dv/dt rectifier is analyzed for any diode-ON-duty ratio. The equations of the waveforms,

the input and output powers, the current and voltage transfer functions, the current and

voltage stresses, the power-output capability, and the power conversion efficiencies are

obtained. The characteristics of the normalized output power, the normalized input

resistance and capacitance, the current and voltage transfer functions, and the power-

output capability are clarified as functions of the diode-ON-duty ratio.

20. An Analytical Steady-State Model of LCC type Series–Parallel Resonant

Converter with Capacitive Output Filter

Abstract: A piecewise analytical function is proposed and applied to investigate the

steady-state behavior of series–parallel resonant converter operated in a discontinuous

current mode. The converter shows two sequences of the equivalent circuits alternatively

operated in the discontinuous current mode with different output voltages. To get the

response time of current in one resonance, a successive solving process based on the

state-space method is presented analytically in each sequence. This solving process can

describe the complicated behavior resulting from the load rectifier, which makes the

output capacitor appear or disappear several times in one switching period. By

introducing the output voltage coefficient and the principle of energy transmission

balance, the steady-state model is deduced afterward. This model is accurate and simple,

making it helpful to design and optimize the converter conveniently.

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POWER SYSTEMS

POWER SYSTEMS BASED SIMULATION

PROJECT

CODE

PROJECT TITLES YEAR

CPPS 01 Simulation of Transient Skin Effect of DC Railway System

Based on MATLAB/Simulink

2013

CPPS 02 A Sliding-Mode Duty-Ratio Controller for DC/DC Buck

Converters with Constant Power Loads

2013

CPPS 03 A Combination of Shunt Hybrid Power Filter and Thyristor

Controlled Reactor for Power Quality

2013

CPPS 04 Stability Enhancement of a PMSG-Based Offshore Wind

Farm Fed to a Multi-Machine System through an LCC-

HVDC Link

2013

CPPS 05 Dynamic Averaged and Simplified Models for MMC-

Based HVDC Transmission Systems

2013

CPPS 06 Coordinated Controls and Energy Management of

Distributed Generation Inverters in a Micro-grid

2013

CPPS 07 Control of Improved Full-Bridge Three-Level DC/DC

Converter for Wind Turbines in a DC Grid

2013

CPPS 08 Control Structure for Single-Phase Stand-Alone Wind-

Based Energy Sources

2013

1. Simulation of Transient Skin Effect of DC Railway System Based on

MATLAB/Simulink

Abstract: This technique for simulation of transient skin effect of the dc railway system

based on MATLAB/Simulink. The classic calculation of skin effect based on frequency

domain is not suitable for time-domain simulation. To develop a time-domain calculation

method which can be realized in MATLAB/Simulink, through the analysis of the step

series algorithm, results are applied to the calculation of frequency voltage signal and

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compared with skin effect impedance of frequency. Accurate simulation of the transient

skin effect produces accurate modeling of the remote fault current. This is important for

the dc railway protection researchers to develop techniques for discriminating remote

short-circuits currents from locomotive starting currents.

2. A Sliding-Mode Duty-Ratio Controller for DC/DC Buck Converters with

Constant Power Loads

Abstract: Incorporating a medium-voltage DC (MVDC) integrated power system is a

goal for future surface combatants and submarines. In a MVDC shipboard power system,

DC/DC converters are commonly employed to supply constant power to electric loads.

These constant power loads have a characteristic of negative incremental impedance,

which may cause system instability during disturbances if the system is not properly

controlled. This paper proposes a sliding-mode duty-ratio controller (SMDC) for DC/DC

buck converters with constant power loads. The proposed SMDC is able to stabilize the

DC power systems over the entire operating range in the presence of significant

variations in the load power and input voltage. The proposed SMDC is validated by both

simulation studies in MATLAB/Simulink and experiments for stabilizing a DC/DC buck

converter with constant power loads.

3. A Combination of Shunt Hybrid Power Filter and Thyristor Controlled Reactor

for Power Quality

Abstract: A combined system of a Thyristor-Controlled Reactor (TCR) and a Shunt

Hybrid Power Filter (SHPF) for harmonic and reactive power compensation. The SHPF

is the combination of a small rating Active Power Filter (APF) and a 5th harmonic tuned

LC Passive Filter. The tuned passive filter and the TCR form a Shunt Passive Filter (SPF)

to compensate reactive power. The small rating APF is used to improve filtering

characteristics of SPF and to suppress the possibility of resonance between the SPF and

line inductances. A PI controller was used and a triggering alpha was extracted using a

look up table to control the TCR. A nonlinear control of APF was developed for current

tracking and voltage regulation. The later is based on a decoupled control strategy, which

considers that the controlled system may be divided into an inner fast loop and an outer

slow one. Thus, an exact linearization control was applied to the inner loop and a

nonlinear feedback control law was used for the outer voltage loop.

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4. Stability Enhancement of a PMSG-Based Offshore Wind Farm Fed to a Multi-

Machine System through an LCC-HVDC Link

Abstract: Adaptive-network-based fuzzy inference system (ANFIS) is an adaptation and

robustness method since it combines the advantages of artificial neural network (ANN)

and fuzzy logic controller (FLC). Besides, ANFIS is also a nonlinear controller that can

be used to improve stability of the studied system under different operating points. This

paper presents the stability-improvement results of an offshore wind farm (OWF) fed to a

multi-machine system through a high-voltage direct-current (HVDC) link based on line-

commutated converter (LCC). An effective control scheme using a designed ANFIS

damping controller at the inverter station of the HVDC link to achieve damping

improvement of the studied system is proposed. A frequency-domain scheme based on

Eigen value and root-loci technique is carried out to compare the effectiveness of the

proposed ANFIS control scheme and a modal-control designed PID damping controller.

5. Dynamic Averaged and Simplified Models for MMC-Based HVDC Transmission

Systems

Abstract: Voltage-source converter (VSC) technologies are rapidly evolving and

increasing the range of applications in a variety of fields within the power industry.

Existing two- and three-level VSC technologies are being superseded by the new modular

multilevel converter (MMC) technology for HVDC applications. The computational

burden caused by detailed modeling of MMC–HVDC systems in electromagnetic

transient-type (EMT-type) programs complicates the simulation of transients when such

systems are integrated into large networks.

6. Coordinated Control and Energy Management of Distributed Generation

Inverters in a Micro-grid

Abstract: A microgrid consisting of different distributed generation (DG) units that are

connected to the distribution grid. An energy-management algorithm is implemented to

coordinate the operations of the different DG units in the microgrid for grid-connected

and islanded operations. The proposed microgrid consists of a photovoltaic (PV) array

which functions as the primary generation unit of the microgrid and a proton-exchange

membrane fuel cell to supplement the variability in the power generated by the PV array.

A lithium-ion storage battery is incorporated into the microgrid to mitigate peak demands

during grid-connected operation and to compensate for any shortage in the generated

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power during islanded operation. The control design for the DG inverters employs a new

model predictive control algorithm which enables faster computational time for large

power systems by optimizing the steady-state and the transient control problems

separately.

7. Power Flow and Power Reduction Control Using Variable Frequency of Offshore

AC Grids

Abstract: An “integrated strategy” for connecting offshore wind farms to onshore grids,

an offshore AC grid is formed by interconnecting offshore wind farms and point-to-point

VSC-HVDC links using an AC network. The advantage of this strategy is that in the case

of a DC fault, AC circuit breakers are used to isolate the faulted HVDC link without the

need for DC circuit breakers. This paper presents a control system that regulates power

sharing between the HVDC links by varying the operating frequency of the offshore AC

grid. Primary and secondary power regulation controllers are designed to achieve

automatic power flow coordination between HVDC links. Increase in the offshore AC

grid frequency during onshore AC grid fault or DC fault signals power flow imbalance.

This signal is used to suppress the transient DC over-voltage through the coordination

control between the wind farm side converters of HVDC links and the power reduction

control of wind turbines.

8. Dynamic Stability Improvement of Four Parallel-Operated PMSG-Based

Offshore Wind Turbine Generators Fed to a Power System Using a STATCOM

Abstract: The stability-improvement results of four parallel-operated offshore wind

turbine generators (WTGs) connected to an onshore power system using a static

synchronous compensator (STATCOM). The operating characteristics of each of the four

WTGs are simulated by a 5-MW wind permanent-magnet synchronous generator while

the onshore power system is simulated by a synchronous generator (SG) fed to an infinite

bus through two parallel transmission lines. A damping controller of the proposed

STATCOM is designed by using a pole-assignment approach to render adequate damping

to the dominant modes of the studied SG. A frequency-domain approach based on a

linearized system model using Eigen value analysis is performed while a time-domain

scheme based on a nonlinear system model subject to disturbances is also carried out.

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RENEWABLE/SUSTAINABLE

ENERGY

RENEWABLE/SUSTAINABLE ENERGY –

SIMULATION

PROJECT

CODE

PROJECT TITLES YEAR

CPSE 01 High Step-Up, High Efficiency Interleaved Converter with

Voltage Multiplier Module for Renewable Energy System

2013

CPSE 02 A Comparative Study on Maximum Power Point Tracking

Techniques for Photovoltaic Power Systems

2013

CPSE 03 A New Hybrid Modular Multilevel Converter for Grid

Connection of Large Wind Turbines

2013

CPSE 04 A Novel Operation and Control Strategy for a Standalone

Hybrid Renewable Power System

2013

CPSE 05 Dynamic Modeling and Control of Interleaved Flyback Module

Integrated Converter for PV Power Applications

2013

1. High Step-Up, High Efficiency Interleaved Converter with Voltage Multiplier

Module for Renewable Energy System

Abstract: A novel high step-up converter, which is suitable for renewable energy system

is proposed in this paper. Through a voltage multiplier module composed of switched

capacitors and coupled inductors, a conventional interleaved boost converter obtains high

step-up gain without operating at extreme duty ratio. The configuration of proposed

converter not only reduces the current stress but also constrains the input current ripple,

which decreases the conduction losses and lengthens the life time of input source. In

addition, Due to the lossless passive clamp performance, leakage energy is recycled to

the output terminal. Hence, large voltage spikes across the main switches are alleviated

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and the efficiency is improved. Even the low voltage stress makes the low-voltage-rated

MOSFETs can be adopted for reductions of conduction losses and cost.

2. A Comparative Study on Maximum Power Point Tracking Techniques for

Photovoltaic Power Systems

Abstract: A comprehensive review of the maximum power point tracking (MPPT)

techniques applied to photovoltaic (PV) power system. A good number of publications

report on different MPPT techniques for a PV system together with implementation. But,

confusion lies while selecting a MPPT as every technique has its own merits and

demerits. Hence, a proper review of these techniques is essential. Unfortunately, very few

attempts have been made in this regard, excepting two latest reviews on MPPT. Since,

MPPT is an essential part of a PV system, extensive research has been revealed in recent

years in this field and many new techniques have been reported to the list since then. In

this paper, a detailed description and then classification of the MPPT techniques have

made based on features, such as number of control variables involved, types of control

strategies employed, types of circuitry used suitably for PV system and practical/

commercial applications.

3. A New Hybrid Modular Multilevel Converter for Grid Connection of Large Wind

Turbines

Abstract: The trend towards multi-megawatt (multi-MW) wind turbines and the

increasing interest in direct-drive variable-speed wind energy systems have made

multilevel converters a promising candidate for large wind energy conversion systems. A

new hybrid modular multilevel converter for interfacing a full-scale, permanent magnet

synchronous generator (PMSG)-based direct-drive variable-speed wind energy

conversion system (WECS). The proposed hybrid converter, which is used on the grid

side of the system, consists of a three-level modular multilevel converter (MMC) in series

connection with three H-bridge modules. The generator-side converter is based on a

conventional three-level neutral-point-clamped converter. The proposed hybrid converter,

as opposed to the existing full-scale multilevel converter-based wind energy systems,

provides structural modularity and higher dc-bus voltage utilization. These formulate and

analyze the internal dynamics of the proposed hybrid converter including the circulating

currents and the capacitor voltage ripples. The ac components of the circulating currents,

if not properly reduced, increase the amplitude of the capacitor voltage ripples, rating

values of the converter components, and losses. Based on the analysis, closed-loop

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circulating current and capacitor voltage ripple reduction techniques are developed. The

reduction of capacitor voltage ripples help reduce the capacitor value.

4. A Novel Operation and Control Strategy for a Standalone Hybrid Renewable

Power System

Abstract: A novel operation and control strategy for a renewable hybrid power system

for a standalone operation. The proposed hybrid system consists of a wind turbine, a fuel

cell, electrolyze, a battery storage unit, and a set of loads. The overall control strategy is

based on a two-level structure. The top level is the energy management and power

regulation system. Depending on wind and load conditions, this system generates

reference dynamic operating points to low level individual subsystems. The energy

management and power regulation system also controls the load scheduling operation

during unfavorable wind conditions under inadequate energy storage in order to avoid a

system blackout. Based on the reference dynamic operating points of the individual

subsystems, the local controllers control the wind turbine, fuel cell, electrolyses, and

battery storage units.

5. Dynamic Modeling and Control of Interleaved Flyback Module Integrated

Converter for PV Power Applications

Abstract: For PV applications, the interleaved flyback module integrated converters

(IFMIC) operating in continuous conduction mode (CCM) shows the advantages of high

power density, low voltage and current stresses, and low electromagnetic interference,

but demonstrates a difficult control problem compared to the discontinuous conduction

mode (DCM). The control issues and presents detailed modeling, in-depth dynamic

analysis, and a two-step controller design approach for IFMIC systems operating in

CCM. The proposed modeling approach is based on the fourth-order system considering

the dynamics of the output CL filter. This realistic fourth-order system modeling shows

the presence of a resonant peak at a certain frequency, which can cause phase loss and

constraints of system bandwidth. A decoupled two-step controller design approach is thus

proposed to simplify the modeling and control synthesis in the IFMIC development. The

decoupled controller consists of a PI controller followed by a lag term for mitigating the

effect of the resonant peak.

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INDUSTRIAL ELECTRONICS

INDUSTRIAL ELECTRONICS –

SIMULATION WITH HARDWARE KIT

PROJECT

CODE

PROJECT TITLES YEAR

CPIE 01 A New Interleaved Three-Phase Single-Stage PFC AC–DC

Converter

2013

CPIE 02 Cascade Cockcroft– Walton Voltage Multiplier Applied to

Transformer less High Step-Up DC–DC Converter

2013

CPIE 03 A New ZCS-PWM Full-Bridge Dc-Dc Converter with

Simple Auxiliary Circuits

2013

CPIE 04 High-Efficiency LED Driver without Electrolytic Capacitor

for Street Lighting

2013

CPIE 05 A Modified Three-Phase Four Wire UPQC Topology With

Reduced DC-Link Voltage Rating

2013

CPIE 06 Analysis and Design of a Multi-output Converter Using

Asymmetrical PWM Half-Bridge Flyback Converter

Employing a Parallel–Series Transformer

2013

CPIE 07 Analysis and Design of Phase-Shifted Dual H-Bridge

Converter With a Wide ZVS Range and Reduced Output

Filter

2013

CPIE 08 Closed-loop Control of DC-DC Dual Active Bridge

Converters Driving Single-Phase Inverters

2013

CPIE 09 A Novel Flyback-Based Input PFC Stage for Electronic

Ballasts in Lighting Applications

2013

CPIE 10 A Novel Integrated Buck–Flyback Non-isolated PFC

Converter With High Power Factor

2013

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CPIE 11 A High Frequency Dual-Channel Isolated Resonant Gate

Driver with Low Gate Drive Loss for ZVS Full-Bridge

Converters

2013

CPIE 12 Zero-Voltage Switching Multi-Output Flyback Converter

with Integrated Auxiliary Buck Converter

2013

1. A New Interleaved Three-Phase Single-Stage PFC AC–DC Converter

Abstract: A new interleaved single-stage ac–dc converter is proposed in this paper to

reduce line current harmonics while achieving power factor correction (PFC). The

proposed rectifier can produce input currents that do not have dead band regions with

high PFC, operate with a continuous output current, and minimize the input

electromagnetic interference filter size.

2. Cascade Cockcroft– Walton Voltage Multiplier Applied to Transformerless High

Step-Up DC–DC Converter

Abstract: This paper proposes a high step-up dc-dc converter based on the Cockcroft-

Walton (CW) voltage multiplier without a step-up transformer. Providing continuous

input current with low ripple, high voltage ratio, and low voltage stress on the switches,

diodes, and capacitors, the proposed converter is quite suitable for applying to low-input-

level dc generation systems. Moreover, based on the n-stage CW voltage multiplier, the

proposed converter can provide a suitable dc source for an n + 1-level multilevel inverter.

In this paper, the proposed control strategy employs two independent frequencies, one of

which operates at high frequency to minimize the size of the inductor while the other one

operates at relatively low frequency according to the desired output voltage ripple.

3. A New ZCS-PWM Full-Bridge Dc-Dc Converter with Simple Auxiliary Circuits

Abstract: A new soft-switching PWM full-bridge converter is proposed in this paper. The

outstanding feature of the new converter is that it allows its main power switches to

operate with zero current switching (ZCS) and with fewer conduction losses than

conventional full-bridge converters. This is achieved by using two very simple active

auxiliary circuits – one active, one passive.

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4. High-Efficiency LED Driver without Electrolytic Capacitor for Street Lighting

Abstract: High-brightness light-emitting diodes (LEDs) are considered as a remarkable

lighting device due to their high reliability, chromatic variety, and increasing efficiency.

As a consequence, a high number of solutions for supplying LED strings are coming out.

One-stage solutions are cost effective, but their efficiency is low as they have to fulfill

several purposes with only one converter: power factor correction (PFC), galvanic

isolation (in some cases), and current regulation. Two-stage and three-stage solutions

have higher efficiency as each stage is optimized for just one or two tasks, and they are

the preferred option when supplying several strings at the same time. Nevertheless, due to

their higher cost in comparison to one-stage solutions, they are used when high

efficiency, high performance, and the possibility of supplying several strings are the main

concerns. In addition, they are also used when high reliability is needed and electrolytic

capacitors cannot be used.

5. A Modified Three-Phase Four-Wire UPQC Topology with Reduced DC-Link

Voltage Rating

Abstract: The unified power quality conditioner (UPQC) is a custom power device,

which mitigates voltage and current-related PQ issues in the power distribution systems.

In this paper, a UPQC topology for applications with non-stiff source is proposed. The

proposed topology enables UPQC to have a reduced dc-link voltage without

compromising its compensation capability. This proposed topology also helps to match

the dc-link voltage requirement of the shunt and series active filters of the UPQC. The

topology uses a capacitor in series with the interfacing inductor of the shunt active filter,

and the system neutral is connected to the negative terminal of the dc-link voltage to

avoid the requirement of the fourth leg in the voltage source inverter (VSI) of the shunt

active filter. The average switching frequency of the switches in the VSI also reduces;

consequently the switching losses in the inverters reduce.

6. Analysis and Design of a Multi-output Converter Using Asymmetrical PWM

Half-Bridge Flyback Converter Employing a Parallel–Series Transformer

Abstract: A multi-output converter using an asymmetrical pulse width modulation half-

bridge flyback topology employing a parallel–series-connected transformer. Compared to

conventional multi-output topologies, the proposed converter operates using a single-

output controller without the need for additional control loops and devices. In order to

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solve the cross-regulation problem, the output stages of the proposed converter are

stacked in series. In addition, the voltage regulation of the proposed multi-output

converter is improved through the analysis of its resonant characteristics under load

variations and minimizing the secondary conduction loss. The proposed multi-output

converter shows excellent performance in terms of its output regulation from no-load to

full-load conditions and good cross regulation under high output currents.

7. Analysis and Design of Phase-Shifted Dual H-Bridge Converter with a Wide ZVS

Range and Reduced Output Filter

Abstract: A phase-shifted dual H-bridge converter, which can solve the drawbacks of

existing phase-shifted full-bridge converters such as narrow zero-voltage-switching

(ZVS) range, large circulating current, large duty-cycle loss, and serious secondary-

voltage overshoot and oscillation, is analyzed and evaluated. The proposed topology is

composed of two symmetric half-bridge inverters that are placed in parallel on the

primary side and are driven in a phase-shifting manner to regulate the output voltage. At

the rectifier stage, a center-tap-type rectifier with two additional low-current-rated diodes

is employed. This structure allows the proposed converter to have the advantages of a

wide ZVS range, no problems related to duty-cycle loss, no circulating current, and the

reduction of secondary-voltage oscillation and overshoot. Moreover, the output filter’s

size becomes smaller compared to the conventional phase-shift full-bridge converters.

8. Closed-loop Control of DC-DC Dual Active Bridge Converters Driving Single-

Phase Inverters

Abstract: A solid state transformer (SST) is a high-frequency power electronic converter

that is used as a distribution power transformer. A common three-stage configuration of

an SST consists of ac-dc rectifier, isolated dc-dc dual-active-bridge (DAB) converter, and

dc-ac inverter. This work addresses the controller design issue for a dc-dc DAB converter

when driving a regulated single-phase dc-ac inverter. Since the switching frequency of

the inverter stage is much higher than that of the DAB stage, the single-phase inverter is

modeled as a double-line-frequency current sink. The effect of 120-Hz current by the

single-phase inverter is studied. The limitation of a PI controller, low gain at 120 Hz, is

investigated. Two methods are proposed to improve the regulation of the output voltage

of DAB converters.

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9. A Novel Flyback-Based Input PFC Stage for Electronic Ballasts in Lighting

Applications

Abstract: An electronic driver for public lighting systems. The input stage is based on the

integration of two flyback converters with different polarities, in order to avoid the use of

the input diode bridge rectifying stage. The output stage is a boost converter with an

output current control. The proposed circuit is introduced and analyzed, and a design

example for a 50-W light-emitting diode lamp is presented. The most relevant simulation

and experimental results are also shown, in order to validate the idea. A comparison in

terms of efficiency for the input stage is carried out between the proposed topology and

the conventional flyback converter, showing an efficiency enhancement in the proposed

converter. However, the most important advantage of the proposed converter is outlined

in the final part of this paper. This advantage comes from the avoidance of the input

diode bridge, thus enabling the bidirectional power flow at the input stage. Therefore, the

topology can be used to deliver energy into the power grid. In recent lighting

applications, the use of micro renewable generators in lighting points has made the use of

special electronics to handle the energy flows in the ballast necessary.

10. A Novel Integrated Buck–Flyback Non-isolated PFC Converter with High

Power Factor

Abstract: A novel integrated buck–flyback non-isolated power factor (PF) correction

(PFC) converter is proposed in this paper. This new converter is an inherent integration

of a buck converter and a flyback converter, which operates in either flyback mode or

buck mode according to whether the input voltage is lower or higher than the output

voltage. In this way, the dead zones of ac input current in traditional buck PFC converter

are eliminated. Therefore, the proposed integrated buck–flyback non-isolated PFC

converter can achieve high PF under universal ac input range, and its input current

harmonics can easily meet the limits.

11. A High Frequency Dual-Channel Isolated Resonant Gate Driver with Low Gate

Drive Loss for ZVS Full-Bridge Converters

Abstract: As switching frequency increases, to reduce the gate drive loss combined with

the Zero-Voltage-Switching (ZVS) technique is meaningful for the widely used Full-

Bridge (FB) converters. A dual-channel isolated Resonant Gate Driver (RGD) is

proposed in this paper. The proposed RGD is able to provide two isolated complementary

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drive signals for a pair of power MOSFETs in one bridge leg. The proposed RGD

reduces about 79 % gate drive loss compared to the conventional Voltage Source Driver

(VSD). In addition, the negative gate drive voltage provided by the proposed RGD

prevents the false trigger problem in the FB converters.

12. Zero-Voltage Switching Multi-Output Flyback Converter with Integrated

Auxiliary Buck Converter

Abstract: A new multi-output converter. It consists of half-bridge inverter in primary

side, and flyback rectifier which is integrated with auxiliary buck converter in secondary

side. The primary switches control the main output voltage and the secondary

synchronous switches control the auxiliary output voltage. The main advantages of the

proposed converter are that the transformer size can be reduced due to the lower

magnetizing offset current, all the switches including synchronous ones can achieve the

zero-voltage switching (ZVS).

ELECTRICAL MACHINE DRIVES

PROJECT

CODE

PROJECT TITLES YEAR

CPED 01 An Adjustable Speed PFC Bridgeless Buck-Boost

Converter Fed BLDC Motor Drive

2013

CPED 02 Digital Control Strategy for Four Quadrant Operation of

Three Phase BLDC Motor with Load Variations

2013

CPED 03 A Driver for the Single-Phase Brushless DC Fan Motor

with Hybrid Winding Structure

2013

1. An Adjustable Speed PFC Bridgeless Buck-Boost Converter Fed BLDC Motor

Drive

Abstract: A PFC (Power Factor Corrected) BL (Bridgeless) buck-boost converter fed

BLDC (Brushless Direct Current) motor drive as a cost effective solution for low power

applications. An approach of speed control of BLDC motor by controlling the DC link

voltage of VSI (Voltage Source Inverter) is used with a single voltage sensor. This

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facilitates the operation of VSI at fundamental frequency switching by using the

electronic commutation of BLDC motor which offers reduced switching losses. A

bridgeless configuration of buck-boost converter is proposed which offers elimination of

DBR (Diode Bridge Rectifier), thus reduces the conduction losses associated with it.

2. Digital Control Strategy for Four Quadrant Operation of Three Phase BLDC

Motor with Load Variations

Abstract: Brushless DC (BLDC) motor drives are becoming more popular in industrial,

traction applications. This makes the control of BLDC motor in all the four quadrants

very vital. This paper deals with the digital control of three phase BLDC motor. The

motor is controlled in all the four quadrants without any loss of power; in fact energy is

conserved during the regenerative period.

3. A Driver for the Single-Phase Brushless DC Fan Motor with Hybrid Winding

Structure

Abstract: A novel driver for a single-phase brushless dc fan motor with a hybrid

series/parallel winding structure. The winding symbols and directions of the hybrid motor

stator structure are defined, and the winding steps for the proposed series/parallel

winding are explained. An adequate inverter driving circuit, which is capable to

simultaneously obtain the advantages of the hybrid structure, is also discussed. At last,

the overall system of this hybrid brushless dc motor with the proposed driving circuit is

then implemented to verify the performance of the proposed driver and structure.

M.E/M.Tech, B.E/B.Tech Projects

Education