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Analysis and Design of Power Electronic Circuits using Orcad. Professor Babak Fahimi, PhD Director, Power Electronics and Controlled Motion Laboratory University of Texas at Arlington. Getting started with PSpice. To start with a PSpice project: Go to capture CIS Lite Edition

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analysis and design of power electronic circuits using orcad

Analysis and Design of Power Electronic Circuits using Orcad

Professor Babak Fahimi, PhD

Director, Power Electronics and Controlled Motion Laboratory

University of Texas at Arlington

getting started with pspice
Getting started with PSpice

To start with a PSpice project:

  • Go to capture CIS Lite Edition
  • Go to “File” menu. Select “New Project” option.
  • Choose “analog or mixed A/D” option and specify the project name and its location and click Ok
once the step 3 is completed the following window appears choose create a blank project option
Once the step 3) is completed the following window appears. Choose “Create a blank project” option
slide5
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
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
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)

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
Half Wave Uncontrolled Rectifier

a)For Resistive Load

  • Make the circuit in PSpice using steps mentioned earlier.

Components used are:

  • VSin (voltage source)
  • DIN4002 (diode)
  • R (Resistance)
  • GND_SIGNAL/CAPSYM.
slide11
Make the simulation profile using “New Simulation Profile” command from “PSpice” menu.
slide12

Go to “Edit Simulation Profile” in “PSpice” menu, simulation settings window will open. Go to “Analysis” and set the simulation parameters as shown below.

slide14
Get plots for IR1(resistance current), RMS value of IR1 and V1(input voltage) using “Add Trace” command from “Trace” menu
slide15
Plot the resistance current and then use “Fourier” command from “Trace” menu to get the frequency response of the resistance current.
half wave uncontrolled rectifier16
Half Wave Uncontrolled Rectifier

b)For RL Load

  • Create another page under same schematic and make the circuit using same steps.

Components used are:

  • VSin (voltage source)
  • DIN4002 (diode)
  • R (Resistance)
  • L ( Inductor)
  • GND_SIGNAL/CAPSYM
half wave uncontrolled rectifier19
Half Wave Uncontrolled Rectifier

c) For RC Load

  • Create another page under same schematic and make the circuit using same steps.

Components used are:

  • VSin (voltage source)
  • DIN4002 (diode)
  • R (Resistance)
  • C ( Capacitor)
  • GND_SIGNAL/CAPSYM
slide21
Now simulate the circuit using same steps and get plots for resistance current and capacitor voltage.
half wave uncontrolled rectifier22
Half Wave Uncontrolled Rectifier

d) For RL load with freewheeling diode

  • Create another page under same schematic and make the circuit using same steps.

Components used are:

  • VSin (voltage source)
  • DIN4002 (diode)
  • R (Resistance)
  • L ( Inductor)
  • GND_SIGNAL/CAPSYM
slide24
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
Half Wave Controlled Rectifier

For type (1) connections

  • Make the circuit using same steps.

Components used are:

  • VSin (voltage source)
  • VPULSE (voltage source)
  • 2N1595 (Thyristor)
  • R (Resistance)
  • GND_SIGNAL/CAPSYM
half wave controlled rectifier28
Half Wave Controlled Rectifier

For type (2) connections (a) with zero time delay in gate pulse

  • Make the circuit using same steps.

Components used are:

  • VSin (voltage source)
  • VPULSE (voltage source)
  • 2N1595 (Thyristor)
  • R (Resistance)
  • GND_SIGNAL/CAPSYM
half wave controlled rectifier31
Half Wave Controlled Rectifier

For type (2) connections (b) with 4.1667ms time delay in gate pulse

  • Make the circuit using same steps.

Components used are:

  • VSin (voltage source)
  • VPULSE (voltage source)
  • 2N1595 (Thyristor)
  • R (Resistance)
  • GND_SIGNAL/CAPSYM
full wave uncontrolled rectifier
Full Wave Uncontrolled Rectifier

Full wave uncontrolled rectifier can be :

  • Single phase
  • Three phase
single phase full wave rectifier
Single Phase Full Wave Rectifier
  • Make the circuit as shown:
three phase full wave rectifier
Three Phase Full Wave Rectifier
  • Make the circuit as shown:
points to remember39
Points to remember
  • In order to simulate the circuit signal reference must be named 0 ( the number zero)