Demonstration of Effective Analysis of Power Electronic Circuit Performance Using Pspice Simulator

Abstract

In this work two basic switching devices of power electronic are discussed and employed to demonstrate the simulation performance of Pspice software. It analyses the operational effectiveness of the devices when used in electric circuit to drive a load. The individual assessment of the devices divides the work into two sections. Thyristor on its part is functionally examined under a range of some specified values of gate pulses for driving a resistive load of 250 ohms. Graphs are generated which characteristically explain the relationship that exists between the specified gate pulses and the supply voltage at the anode of the thyristor. On the other part, bipolar junction transistor (BJT) is included as the major active component that drives a pulse width modulation (PWM) inverter. The inverter incorporates a dc pulse generator that produces a control signal with which the output is moderated. The half bridge inverter was drawn in Pspice environment using a schematic editor. It powers a 10W load at output frequency of 1kHZ and inductance of 2.5mH. The inverter runs at output voltage waveform of a period of 1 millisecond. The voltage waveform as plotted against time is shown graphically.