Abstract: Three phase induction motors are the most widely used motors for industrial control and automation. Hence they are often called the workhorse of the motion industries[1]. They are robust, reliable, less maintenance and of high durability. When power is supplied to an induction motor with recommended specified voltage and frequency, it runs at its rated speed. However many applications need variable speed variations to improve the quality of the product. The development of power electronic devices and control systems has to mature to allow these components to be used for speed control of AC and DC motors control in place of conventional methods. Apart from power electronics devices which are used to generate gate pulses we can use DSP kit to generate SPWM pulses. Firstly, the program for generating SPWM pulses for feeding the IGBT inverter is written in C Language using code composer studio and the TMS320F2812 processor is connected to the computer using USB Emulator[3]. The program is dumped to the TMS processor kit and executed. The SPWM pulses obtained at the output ports can be verified using CRO. These pulses are fed to the inverter module to drive the Three Phase Induction Motor.

Keywords: SPWM-Sinusoidal Pulse Width Modulation.