FIGURE 9.4
• CIRCUIT SCHEMATIC-ORIENTED SIMULATOR
• PRINCIPAL CIRCUIT COMPONENT SYMBOLS WITH THE ATTRIBUTES AND DEVICE MODELS STORED IN THE PROGRAM LIBRARY
• INTERNAL CONVERSION OF THE SCHEMATIC TO THE NETLIST AND ANALYTICAL EQUATIONS ARE TRANSPARENT TO THE READER
• CAN PERFORM THE FOLLOWING ANALYSIS:
TRANSIENT ANALYSIS
FREQUENCY-DOMAIN ANALYSIS FOURIER ANALYSIS PARAMETRIC ANALYSIS TEMPERATURE ANALYSIS MONTE CARLO ANALYSIS SENSITIVITY/WORST-CASE ANALYSIS
GRAPHICAL PLOTTING OF RESULTS USING "PROBE"
• DOES NOT DIRECTLY DESIGN THE CIRCUIT, BUT
ITERATIVE ANALYTICAL RESULTS WITH DIFFERENT
CIRCUIT COMPONENTS HELP TO OPTIMIZE THE CIRCUIT DESIGN
• CAN BE USED FOR SYSTEM SIMULATION IF DRAWN IN
EQUIVALENT CIRCUIT FORM
PSPICE is circuit analysis software, one version of which was commercially introduced by MicroSim [4] for SPICE (Simulation Program with Integrated Circuit Emphasis). SPICE was originally developed by the University of California, Berkeley, for analog circuits analysis, but was later extended to power electronic circuits. The PSPICE simulation program is very popular in the power electronics community. The circuit schematic is generated by the parts stored in the program library. An extra disk can supplement this library. All component characteristics, including power semiconductor models, are stored in the library. Once the correct schematic is entered, the program captures it and converts it internally to netlist and analytical equations that are transparent to the user. The program can perform the various types of analysis indicated in the figure. The final results can be plotted in graphical form by using Probe software. If a system is represented by equivalent circuits (such as the d-q model of an induction motor), PSPICE can be used for its analysis. The analysis can be iterated with different component parameters until the user reaches the optimum circuit design. Student Version 9.1 of PSPICE and the User's Guide from MicroSim [4] can be downloaded free from the Internet.