Analysis and Design of Power Electronic Circuits using
- Slides: 39
Analysis and Design of Power Electronic Circuits using Orcad Professor Babak Fahimi, Ph. D Director, Power Electronics and Controlled Motion Laboratory University of Texas at Arlington
Getting started with PSpice To start with a PSpice project: 1) Go to capture CIS Lite Edition 2) Go to “File” menu. Select “New Project” option. 3) Choose “analog or mixed A/D” option and specify the project name and its location and click Ok
4) Once the step 3) is completed the following window appears. Choose “Create a blank project” option
5) Create the circuit by placing all its parts using “Part” option from “Part” menu. In this way a complete electrical circuit can be formed.
Points to remember • When creating a new project , use Analog or Mixed A/D set-up option. • Watch the file location / directory structure.
Design and simulation of power electronic circuits Power Electronic Circuits can be classified as: • DC-DC Converters • AC-DC Converters (Rectifiers) • DC-AC Converters (Inverters) • AC-AC Converters Now design and simulation of each of these circuits will be discussed.
AC-DC Converters (Rectifiers) AC-DC converters ( Rectifiers) can be classified as: • Half wave rectifier • Full wave rectifier These can further be classified depending upon the rectifying element being used. If using diode, are called uncontrolled rectifiers. Whereas if using thyristor, are called controlled rectifiers .
Half Wave Uncontrolled Rectifier a) For Resistive Load 1) Make the circuit in PSpice using steps mentioned earlier. Components used are: § VSin (voltage source) § DIN 4002 (diode) § R (Resistance) § GND_SIGNAL/CAPSYM.
2) Make the simulation profile using “New Simulation Profile” command from “PSpice” menu.
3) Go to “Edit Simulation Profile” in “PSpice” menu, simulation settings window will open. Go to “Analysis” and set the simulation parameters as shown below.
4) Run the simulation by using command “RUN” from “PSpice” menu.
5) Get plots for IR 1(resistance current), RMS value of IR 1 and V 1(input voltage) using “Add Trace” command from “Trace” menu
6) Plot the resistance current and then use “Fourier” command from “Trace” menu to get the frequency response of the resistance current.
Half Wave Uncontrolled Rectifier b) For RL Load 1) § § § Create another page under same schematic and make the circuit using same steps. Components used are: VSin (voltage source) DIN 4002 (diode) R (Resistance) L ( Inductor) GND_SIGNAL/CAPSYM
2) Now simulate the circuit using same steps and get plots for resistance current and input voltage.
Half Wave Uncontrolled Rectifier c) For RC Load 1) Create another page under same schematic and make the circuit using same steps. Components used are: § VSin (voltage source) § DIN 4002 (diode) § R (Resistance) § C ( Capacitor) § GND_SIGNAL/CAPSYM
2) Now simulate the circuit using same steps and get plots for resistance current and capacitor voltage.
Half Wave Uncontrolled Rectifier d) For RL load with freewheeling diode 1) Create another page under same schematic and make the circuit using same steps. Components used are: § VSin (voltage source) § DIN 4002 (diode) § R (Resistance) § L ( Inductor) § GND_SIGNAL/CAPSYM
2) Now simulate the circuit using same steps and get plots for resistance current , RMS value of resistance current and input voltage.
Half Wave Controlled Rectifier For type (1) connections 1) Make the circuit using same steps. Components used are: § VSin (voltage source) § VPULSE (voltage source) § 2 N 1595 (Thyristor) § R (Resistance) § GND_SIGNAL/CAPSYM
2) Now simulate the circuit and get plots for resistance current.
Half Wave Controlled Rectifier For type (2) connections (a) with zero time delay in gate pulse 1) Make the circuit using same steps. Components used are: § VSin (voltage source) § VPULSE (voltage source) § 2 N 1595 (Thyristor) § R (Resistance) § GND_SIGNAL/CAPSYM
2) Now simulate the circuit and get plots for resistance current and input voltage.
Half Wave Controlled Rectifier For type (2) connections (b) with 4. 1667 ms time delay in gate pulse 1) Make the circuit using same steps. Components used are: § VSin (voltage source) § VPULSE (voltage source) § 2 N 1595 (Thyristor) § R (Resistance) § GND_SIGNAL/CAPSYM
2) Now simulate the circuit and get plots for resistance current and input voltage.
Full Wave Uncontrolled Rectifier Full wave uncontrolled rectifier can be : • Single phase • Three phase
Single Phase Full Wave Rectifier 1) Make the circuit as shown:
2) Simulate the circuit and get plots for all diode currents.
Three Phase Full Wave Rectifier 1) Make the circuit as shown:
2) Simulate the circuit and get plots for all diode currents.
Points to remember • In order to simulate the circuit signal reference must be named 0 ( the number zero)
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