Maitri's Matlab

Mahavir Swami Collage of Engineering & Technology

Created By: Maitri Doshi

Guided By:Nimesh Sir & Mainisha Madam

Basic Electronics Presentation Work

What Is MATLAB?

MATLAB® is a high-performance language for technical computing.

It integrates computation, visualization, and programming in an easy-to-use environment where problems and solutions are expressed in familiar mathematical notation.

Typical uses

• Math and computation

• Algorithm development

• Modeling, simulation, and prototyping

• Data analysis, exploration, and visualization

• Application development, including graphical user interface building

• Scientific and engineering graphics

The name MATLAB stands for matrix laboratory

In industry,MATLAB is the tool of choice for high-productivity research, development, and analysis.

Toolboxes. MATLAB features a family of application-specific solutions

Toolboxes allow you to learn and apply specialized technology.

Toolboxes are comprehensive collections of MATLAB functions (M-files).

Signal processing, Control systems, Neural networks, Fuzzy logic, Wavelets, Simulation, and many others.

Development Environment.

Set of tools and facilities that help you use MATLAB functions and files.

MATLAB desktop and Command Window, a command history,

Browsers for viewing help, the workspace, files, and the search path.

The MATLAB Mathematical Function Library.

Collection of computational algorithms

Elementary functions Example: sum, sine, cosine,

Complex arithmetic

Sophisticated functions Example:Matrix inverse, matrix eigen values, Bessel functions, and fast Fourier transforms.

Sources & Sinks

Elements

Lines, circuit breakers and transformers

Typical Schematic-Single phase converter

Design procedurestep-1

• Type simulink in Mat lab command window• Simulink browser appears• Go to file menu• Click new • Select model• Model file open

Step-2 • Save the file in the work space with

file.mdl

Step-3 Model file parameters

• Go to simulation• Select configuration parameters• Window get open

Step-4 Configuration parameters entries

Simulation Parameters

Step-5 Building a model using libraries

Select simpower systems toolbox from simulink.

Step-6 Finishing the model Step-7 Run The Model

Starting Transient Simulation

Step-8 verify the result by opening the scope window

View Simulation results

Wave forms

• Waveforms• Output voltage equation• Ripple factor• Input Displacement, distortion and power factor• Firing angle Vs output voltage ..similar graphs

Output voltage• The average output voltage:

The average value of any periodic waveform v(t) with period “T” seconds is given by

For half wave rectifier

[ ]

[ ]απ

ωπ

ωωπ

πα

π

α

cos12

cos2

)(2

1

+=

−=

= ∫

mave

mave

mave

VV

tV

V

tdtSinVV

∫=T

AVE dttvT

V0

)(1

Voltage Characteristics

Input Power factor

• Active power delivered to resistive load = Vrms Irms

powerapparentInput

LoadtodeliveredPowerActivefactorpowerInput =

( ) ( )21

2

2

1

= ∫

π

α

ωωπ

tdtSinVV mrms

( ) ( )21

2

2122

−

×= ∫

π

α

ωωπ

tdtCosV

V mrms

21

21

2

21

2

2

21

2

+−=

−=

ααππ

ωωπ

π

α

SinVV

tSint

V

mrms

m

R

VI rmsrms =

Input apparent power = Vs Is

2m

s

VV = Is = Irms

rmss

rmsrms

IV

IVfactorpowerInput =

2m

rms

VV

=

2

2

21

2

21

m

m

V

SinV

factorpowerInput

+−

=

ααππ

21

2

2

2

1

+−= ααπ

πSin

factorpowerInput

Guided By:Nimesh Sir & Manisha Madam