electric circuit analysis using simulink · 2) connect it in series in the circuit. 3)...
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Electric Circuit Analysis using
Simulink
Bikramjit Goswami
Department of EEE
Assam Don Bosco University
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To start with
Simulate the simple DC circuit shown below in Simulink
and calculate the voltage, current & power in it.
100 V10 Ω
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Steps
1) Find the required components- (i) DC Voltage
Source and (ii) Resistance.
2) Go to Simulink Library.
3) Choose SimPowerSystems in Simulink library.3) Choose SimPowerSystems in Simulink library.
4) Choose Electrical Sources in SimPowerSystems.
5) Choose DC Voltage Source and bring it to the
Simulink Workspace.
6) Change the voltage to 100 V if required.
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Steps
7) Choose Elements in SimPowerSystems.
8) Choose Series RLC branch from Elements.
9) Double click on the RLC branch and change the
block parameter to R.block parameter to R.
10)Give it a value of 10 ohms.
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Measure the current and voltage
1) Simulink library browser SimPowerSystems Measurements Current Measurement block.
2) Connect it in series in the circuit.2) Connect it in series in the circuit.
3) Simulink library browser SimPowerSystems Measurements Voltage Measurement block.
4) Connect it in parallel to the resistance in the circuit.
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Viewing the results
1) Simulink Commonly used blocks Scope
2) Scope Parameters No. of axes 2
3) Connect the inputs to Current & Voltage
measurement block outputsmeasurement block outputs
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Bring powergui block to the workspace
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Steps for observing the output
Run the simulink model
Double click on the Scope
Observe the graphs
Use Autoscale option if required
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Measure the Power
1) P=VI
2) Simulink Math Operations Product
3) Connect the inputs to Current & Voltage
measurement block outputsmeasurement block outputs
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Voltage, Current and Power Outputs
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Use Display block to observe the
values of V, I and P
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Simulation of the same circuit using
another method in Simulink
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100 V10 Ω
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Corresponding equations of the circuit
R
VI
IRV
=
=
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RIR
VP
RI
22
==
=
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Steps
Simulink Commonly used blocks
Constant Change the value of the block to
100 by double clicking (Corresponding to 100
V of the source)V of the source)
Bring Fcn block from Simulink library
Double click Change the function to u/10
(Corresponding to V/R, as R= 10 Ω)
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Scope connected to the output of the
Fcn block will show the current
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For measurement of Power
Use another Fcn block.
Change its expression to (u*u/10), corresponding to
V2/R).V2/R).
Connect its input to Constant voltage block output.
Connect its output to a display.
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Simulation of R-L Series Circuit
Hands-on:
Please follow the steps as shown on the screen.
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Questions please ?????
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End of Day-2 Session-2
Thank YouThank You
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