simulations

Anil maurya

Electrical & Electronics Engineer 1

BY

ANIL MAURYA

ELECTRICAL & ELECTRONICS ENGINEER

Anil maurya


CONTENT SIMULATION NO.-1 TO SIMULATE FULL BRIDGE RECTIFIER SIMULATION NO.-2 TO SIMULATE MODEL FOR GENERATION OF SIN AND COSINE WAVE

SIMULATION NO.-3 TO SIMULATE DC-AC INVERTER

SIMULATION NO.-4 SIMULATION OF A THREE PHASE HALF CONVERTER WITH R LOAD

SIMULATION NO.-5 SIMULATION OF A CIRCUIT BREAKER USING A SIMPLE CIRCUIT

SIMULATION NO.-6 SIMULATION OF A CIRCUIT WITH R, RL, RC AND RLC LOAD AND STUDY THE VARIOUS PARAMETERS LIKE POWER FACTOR,VOLTAGE AND CURRENT AS WELL AS COMPARE THE RESULTS.

SIMULATION NO.-7 SIMULATION OF A THREE PHASE AC VOLTAGE CONTROLLER WITH R LOAD

SIMULATION NO.-8 OBTAIN THE STEP RESPONSE OF FOLLOWING MODEL

SIMULATION NO.-9 TO SIMULATE SINGLE PHASE HALF WAVE CONVERTER

SIMULATION NO.-10 SIMULATION OF A SINGLE PHASE DUAL CONVERTER WITH R LOAD AND OBTAIN FIRST AND THIRD QUADTRANT OPERATION

SIMULATION NO.-11 SIMULATION OF A SINGLE PHASE AC VOLTAGE CONTROLLER WITH R LOAD

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Simulation no.-1

Object-

To simulate full bridge rectifier.

Circuit Diagram:-

Model for Full bridge Rectifier

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Waveform for full bridge rectifier

Result:-

We have simulated single phase full bridge rectifier and observed

waveform across scope.

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Simulation no.-2

Object- To simulate model for generation of sin and cosine wave.

Block Required:-

1. Constant

2. Product

3. Sin Trigonometric function

4. Cos Trigonometric function

5. MUX

6. Scope

Theory:-

We have given constant 2*pi and frequency 50Hz and clock to a product

which gives output Wt =2*pi*ft.

This Wt is given to trigonometric function sin and cos. The output of both

these is applied to a product and on the other terminal constant of magnitude of

5. The output of both this product is multiplexed and given to scope and finally

we got sine and cosine wave.

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Model for Generation of sine and cosine wave

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Waveform for sine and cosine

Result:-

We have simulated model for sine and cosine wave and observed


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Simulation no.- 3

Object- To simulate DC-AC inverter.

Block Required:-

1. AC voltage source

2. IGBT

3. Pulse Generator

4. Goto

5. From

6. Current Measurement

7. Voltage Measurement

8. Mux

9. Powergui

10. Scope

11. Series RLC branch

Theory:-

A single phase full bridge inverter is shown with four gate controlled

IGBT. The DC voltage is controlled and converted into AC voltage.

For the time t/2 IGBT T1 and T2 are turned on and load current flow from x

to y. For the next t/2 IGBT T3 and T4 are turned ON and current flow from y to x

i.e. in opposite direction from previous case.

In this way load experience the alternating current by changing the gate

supply of IGBT and we get an alternating voltage and current at load terminal.

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Model for DC-AC inverter

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Waveform for DC to AC Inverter

Result:-

We have simulated single phase full bridge inverter and observed


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Simulation no.- 4

Object- Simulation of a three phase half converter with R load.

Block Required:-

1. 3 phase AC voltage source 2. ThyristorPulse Generator 3. Current Measurement 4. Voltage Measurement 5. powergui 6. Scope 7. Series RLC branch

Model for 3 phase half wave converter

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Waveform for 3 phase half wave converter

Result:-

We have simulated 3 phase half wave converter and observed waveform across scope.

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Simulation no. -5

Object-

Simulation of a circuit breaker using a simple circuit.

Block Required:-


2. Circuit Breaker

3. Timer



6. Series RLC branch

7. Scope

8. Powergui

Theory-

Circuit breaker is a device that interrupts a circuit during fault condition and

also makes circuit after fault clearing. It can be operated both manually as well as

automatically.

In this simulation a circuit breaker is simulated using transmission line

parameters like an inductor in series, parallel RLC branch etc. Voltage and current

is measured for circuit breaker using measurement blocks and displayed on two

different scopes.

A timer is also used for opening and closing of circuit breaker. In this timer

different time instants are given at which ckt breaker is getting close and open. A

powergui block is used for continuous power flow from AC voltage source.

In this simulation initially circuit breaker is closed. Opening time of circuit

breaker is given 0.2 sec. and closing time is given 0.5 sec. using timer control. It is

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cleared from voltage and current waveforms that initially when circuit breaker is

closed voltage across it is zero and load current is flowing through it. At 0.2 sec.

where a fault is occurred and circuit breaker gets opened and current through it is

zero and voltage is appeared. This process is continued till 0.5 sec. let at 0.5 sec.

fault is cleared and circuit breaker is closed and again voltage is zero but current

initially goes to a peak value and then starts decay to come in its starting value.

Model for Operation of Circuit Breaker

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Current waveform of circuit breaker

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Voltage waveform of circuit breaker

Result:-

We have simulated circuit breaker using a simple circuit and

observed waveform across scope.

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Simulation no.- 6

Object- i) Simulation of a circuit with R, RL, RC and RLC load and study the various parameters like power factor, voltage and current as well as compare the results.

ii) Show the waveform at the time of resonance.

Block Required:-

1. AC voltage source 2. Goto 3. From 4. Current Measurement 5. Voltage Measurement 6. Powergui 7. Series RLC branch 8. Scope

Circuit Diagram with R load

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Waveform of load voltage and load current with R load

Circuit Diagram with RL load

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Waveform of load voltage and current for RL load

Circuit Diagram with RC load

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Waveform of load voltage and current for RC load

Circuit Diagram with RLC load

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Waveform of Simple circuit with RLC load when inductive reactance is dominating

Waveform of Simple circuit with RLC load when capacitive reactance is dominating

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Result:-

We have simulated a circuit with R, RL, RC and RLC and observed waveform of load voltage and current.

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Simulation no. - 7

Object- Simulation of a three phase ac voltage controller with R load.

Block Required:-

9. AC voltage source 10. Thyristor 11. Pulse Generator 12. Current Measurement 13. Voltage Measurement 14. powergui 15. Scope 16. Series RLC load

Model for three phase AC voltage controller

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Waveform for three phase AC voltage controller

Result:-

We have simulated single phase AC voltage controller and observed waveform across scope.

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Simulation no- 8

Object:-

Obtain the step response of following model.

Transfer function of plant 1 = 1/ (S+1)

Transfer function of plant 2 = 1/ (S+2)

Block Required:-

1. Step input

2. Plant 1 for 1/s+1

3. Plant 2 of 3/s+2

4. Error Detector

5. Scope

Model for transfer plant 1 & 2.

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Waveform for step response for given model

Result:-

We have simulated step response of transfer function and observed


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Simulation no.- 9

Object:- To simulate single phase half wave converter

Block Required:-


2. Thyristor

3. Pulse Generator

4. Goto

5. From



8. Mux

9. Powergui

10. Scope

Theory:-

A simple rectifier circuit consisting of a single thyristor feeding DC

power to a resistive load R is shown. When voltage i.e. AC is supplied to circuit the

thyristor is forward biased and at delay angle at Vc gate signal is applied between

gate and cathode and thyristor is turns ON during positive half cycle. When

negative cycle appears the thyristor is reverse biased and load is reverse biased

and load is not connected to the source. So for positive half cycle the load doesn’t

experience any voltage.

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Model for single phase half wave converter

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Waveform for single phase half wave converter

Result:-

We have simulated single phase half wave converter and observed


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Simulation no.- 10

Object- Simulation of a single phase dual converter with R load and obtain first and third quadtrant operation.

Block Required:-

1. AC voltage source 2. Thyristor 3. Pulse Generator 4. Current Measurement 5. Voltage Measurement 6. powergui 7. Scope 8. Series RLC branch 9. X-Y Graph

Model for Single phase Dual converter

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Graph for Single phase dual converter –First quadtrant operation

Graph for Single phase dual converter- Third quadtrant operation

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Waveform for Single phase dual converter

Result:-

We have simulated Single phase dual converter and observed graph & waveform across scope.

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Simulation no.- 11

Object- Simulation of a single phase ac voltage controller with R load.

Block Required:-

1. AC voltage source 2. Thyristor 3. Pulse Generator 4. Current Measurement 5. Voltage Measurement 6. powergui 7. Scope 8. Series RLC branch

Model for Single phase AC voltage controller

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Waveform for Single phase AC voltage controller

Result:-

We have simulated single phase AC voltage controller and observed waveform across scope.

simulations

Engineering

object simulation

simple circuit simulation

r load simulation

cosine wave simulation

content simulation

bridge rectifier simulation

dcac inverter simulation

voltage measurement