Project
Speed Control of an Induction Motor The speed control of induction motor is constant and can be made variable by various methods. But we have to find the most reliable and cheap method for regulate the speed of an induction motor. There are methods like pole changing, voltage control but in each and every case there is some or minor causes which make them difficult and expensive. But in this project we are using Bridge type cyclo-converter which controls the speed of an induction motor. In this we are firstly giving the 230V supply and there is step-down transformer is used, which converts 230V to 5V. In next step we are using the voltage regulator which regulates as well as avoid the harmonics in the power output of 5V. Then we are controlling the bridge type cyclo-converter by using the ATMEL series 8051 microcontroller. This works at 5V that’s why we are using the step-down transformer. By varying the number of poles and varying the frequency (in proportion to voltage) are
