www.ijatir.org ISSN 2348–2370 Vol.08,Issue.13, September-2016, Pages:2566-2573 Copyright @ 2016 IJATIR. All rights reserved. High Efficient DC - DC Converter with Voltage Booster for Solar Applications T. SAI KRISHNA 1 , K. RAJESHWAR REDDY 2 1 PG Scholar, Dept of EEE, Kasireddy Narayan Reddy College of Engineering & Research, Abdullapurmet, TS, India. 2 Assistant Professor, Dept of EEE, Kasireddy Narayan Reddy College of Engineering & Research, Abdullapurmet, TS, India. Abstract: Raising the electricity demands leads to the use of renewable energy sources. Solar PV system is demanding choice for energy generation. A novel high-efficiency DC to DC converter with voltage multiplier module for solar energy system is proposed. The voltage multiplier module self- possessed a switched capacitors and coupled inductors. With this arrangement a predictable interleaved boost converter obtains high step-up gain without working at extreme duty ratio is considered. This future converter reduces the current stress and also decreases constrains in input current ripple, which reduces the conduction losses and increases the lifetime of the input supply. Therefore, the huge voltage spikes across the main switches are condensed, and therefore the efficiency will be enhanced. Because of the low voltage stress the low-voltage-rated MOSFETs are adopted for reduction of conduction losses and also cost. The proposed system is designed using MATLAB/SIMULINK software to verify its performance. The result shows the effectiveness of the proposed system with voltage booster. Keywords: Sensitive Data, Data Leakage, Data Allocation Strategies, Fake Records, E-Mail Filtering. I. INTRODUCTION Renewable energy sources generate low voltage production, and thus, high step-up dc/dc converters have been extensively employed in several renewable energy applications such photovoltaic (PV) systems, wind power generation, and fuel cells. Such systems convert energy from renewable sources into electrical energy and renovate low voltage into high voltage using a step-up converter, which can transfer energy into electricity by means of a grid-by-grid inverter or dc micro-grid. Fig1 shows a distinctive renewable energy system that contains of a step-up converter, renewable energy sources, and an inverter for ac application. The high step-up conversion might require two-stage converters with cascade arrangement for enough step-up gain, which decreases the effectiveness and increases the cost. Therefore, a high step-up converter is seen as an significant stage in the system because such a system needs a sufficiently high step- up conversion through high efficiency. Theoretically, usual step-up converters, such as the boost converter and fly-back converter, cannot accomplish a high step-up conversion with high efficiency for the reason that of the resistances of elements or leakage inductance; also, the voltage stresses are bulky. Thus, in recent years, several novel high step-up converters have been developed. Regardless of these advances, high step-up single-switch converters are inappropriate to operate at heavy load given a huge input current ripple thus increases conduction losses. The conventional interleaved boost converter is an excellent nominee for high-power applications and power factor correction. Unluckily, the step-up gain is restricted, and the voltage stresses on semiconductor apparatus are equal to output voltage. Hence, based on the above mentioned considerations, modifying a conventional interleaved boost converter for high step-up and high- power application is an appropriate approach. To combine switched capacitors into an interleaved boost converter may create voltage gain reduplicate, but refusal employment of coupled inductors causes the step-up voltage gain to be restricted. Oppositely, to integrate only coupled inductors into an interleaved boost converter may compose voltage gain higher and adjustable, but no employ of switched capacitors causes the step-up voltage gain to be common. Thus, the synchronization of coupled inductors and switched capacitors is an improved concept; moreover, high efficiency, high step-up gain, and low voltage stress are achieved even used for high-power applications. The projected converter is a conventional interleaved boost converter integrated by means of a voltage multiplier module, and the voltage multiplier module is collected of switched capacitors and coupled inductors. The coupled inductors are capable of designed to expand step-up gain, and the switched capacitors offer additional voltage conversion ratio. In addition, when one of the switches turn off, the energy stored in the magnetizing inductor will transport via three individual paths; thus, the current sharing not only decreases the conduction losses with lower effective current but as well makes currents pass through some diodes decrease to zero earlier than they turn off, which lighten diode reverse recovery losses. The advantages of the proposed converter are as follows. Low cost and high efficiency are achieved by employ of the low-voltage-rated power switch with low RDS (ON); in addition, the voltage stresses on main switches and diodes are significantly lower than output voltage.
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www.ijatir.org
ISSN 2348–2370
Vol.08,Issue.13,
September-2016,
Pages:2566-2573
Copyright @ 2016 IJATIR. All rights reserved.
High Efficient DC - DC Converter with Voltage Booster for Solar Applications T. SAI KRISHNA
1, K. RAJESHWAR REDDY
2
1PG Scholar, Dept of EEE, Kasireddy Narayan Reddy College of Engineering & Research, Abdullapurmet, TS, India.
2Assistant Professor, Dept of EEE, Kasireddy Narayan Reddy College of Engineering & Research, Abdullapurmet, TS, India.
Abstract: Raising the electricity demands leads to the use of
renewable energy sources. Solar PV system is demanding
choice for energy generation. A novel high-efficiency DC to
DC converter with voltage multiplier module for solar energy
system is proposed. The voltage multiplier module self-
possessed a switched capacitors and coupled inductors. With
this arrangement a predictable interleaved boost converter
obtains high step-up gain without working at extreme duty
ratio is considered. This future converter reduces the current
stress and also decreases constrains in input current ripple,
which reduces the conduction losses and increases the
lifetime of the input supply. Therefore, the huge voltage
spikes across the main switches are condensed, and therefore
the efficiency will be enhanced. Because of the low voltage
stress the low-voltage-rated MOSFETs are adopted for
reduction of conduction losses and also cost. The proposed
system is designed using MATLAB/SIMULINK software to
verify its performance. The result shows the effectiveness of
the proposed system with voltage booster.
Keywords: Sensitive Data, Data Leakage, Data Allocation
Strategies, Fake Records, E-Mail Filtering.
I. INTRODUCTION Renewable energy sources generate low voltage
production, and thus, high step-up dc/dc converters have been
extensively employed in several renewable energy
applications such photovoltaic (PV) systems, wind power
generation, and fuel cells. Such systems convert energy from
renewable sources into electrical energy and renovate low
voltage into high voltage using a step-up converter, which
can transfer energy into electricity by means of a grid-by-grid
inverter or dc micro-grid. Fig1 shows a distinctive renewable
energy system that contains of a step-up converter, renewable
energy sources, and an inverter for ac application. The high
step-up conversion might require two-stage converters with
cascade arrangement for enough step-up gain, which
decreases the effectiveness and increases the cost. Therefore,
a high step-up converter is seen as an significant stage in the
system because such a system needs a sufficiently high step-
up conversion through high efficiency. Theoretically, usual
step-up converters, such as the boost converter and fly-back
converter, cannot accomplish a high step-up conversion with
high efficiency for the reason that of the resistances of
elements or leakage inductance; also, the voltage stresses are
bulky. Thus, in recent years, several novel high step-up
converters have been developed. Regardless of these
advances, high step-up single-switch converters are
inappropriate to operate at heavy load given a huge input
current ripple thus increases conduction losses.
The conventional interleaved boost converter is an
excellent nominee for high-power applications and power
factor correction. Unluckily, the step-up gain is restricted,
and the voltage stresses on semiconductor apparatus are
equal to output voltage. Hence, based on the above
mentioned considerations, modifying a conventional
interleaved boost converter for high step-up and high-
power application is an appropriate approach. To combine
switched capacitors into an interleaved boost converter
may create voltage gain reduplicate, but refusal
employment of coupled inductors causes the step-up
voltage gain to be restricted. Oppositely, to integrate only
coupled inductors into an interleaved boost converter may
compose voltage gain higher and adjustable, but no
employ of switched capacitors causes the step-up voltage
gain to be common. Thus, the synchronization of coupled
inductors and switched capacitors is an improved concept;
moreover, high efficiency, high step-up gain, and low
voltage stress are achieved even used for high-power
applications. The projected converter is a conventional
interleaved boost converter integrated by means of a
voltage multiplier module, and the voltage multiplier
module is collected of switched capacitors and coupled
inductors. The coupled inductors are capable of designed
to expand step-up gain, and the switched capacitors offer
additional voltage conversion ratio.
In addition, when one of the switches turn off, the
energy stored in the magnetizing inductor will transport
via three individual paths; thus, the current sharing not
only decreases the conduction losses with lower effective
current but as well makes currents pass through some
diodes decrease to zero earlier than they turn off, which
lighten diode reverse recovery losses. The advantages of
the proposed converter are as follows.
Low cost and high efficiency are achieved by
employ of the low-voltage-rated power switch
with low RDS (ON); in addition, the voltage
stresses on main switches and diodes are
significantly lower than output voltage.
T. SAI KRISHNA, K. RAJESHWAR REDDY
International Journal of Advanced Technology and Innovative Research