DESIGN AND IMPLEMENTATION OF THREE PHASE INVERTER FED TO DRIVE THREE PHASE MOTOR

Abstract

This paper describes the design and implementation of three-phase inverter. Generally inverters are used in high power applications as industrial based induction motor etc. Here the Three-phase Inverter is formed by three legs, each leg consists of two switches. So there are total of six switches. This Three-phase Inverter circuit consists of MOSFETs/IGBT's as switching devices for which the gate pulses are given using Microcontroller. The microcontroller used here is ARDUINO/NI-MYRio through which pulses are generated and given to the switches. The operation of Three-phase Inverter can be performed in two different conduction mode, which are 180 0 and 120 0 mode. In this thesis the operation is performed through 180 0 conduction mode. Arduino is interfaced with Mat Lab, where the pulses are generated in the mat lab and given through Arduino. In case of NI-myRIO, pulses are generated through LabVIEW software.In this paper the hardware implementation of this three phase inverter which is fed to a three phase induction motor is successfully carried out.