DSP Controlled Inverter Fed Speed Control of Three Phase Induction Motor

Abstract

This paper describes the design of 3-Ø ac Induction motor drive with and without V/f control in open loop. It is based on Texas Instruments’ TMS320C240 processor which is dedicated for Power electronic applications. Digital signal Processor is establishing cost effective and energy efficient control system design. The performance of DSP architecture allows an intelligent approach to reduce the complete system costs of digital motion control applications using cheaper electric motors, few sensors and small sizes of EMI filters. This DSP controller delivers the real time MIPS and the tightly integrated peripherals to implement optimal control algorithm with no cost penalty. The part is targeted towards the applications in both industrial and home applications such as washing machines, compressors, air-conditioning units, pumps or simple industrial drives. The software design takes the advantages of Software Development Kit developed by T.I. It adapts the principle of sinusoidal pulse width modulation technique for the generation of PWM signals to the Inverter module. This document includes basic Motor theory, system design concept, Hardware implementation and software design