Speed Control of Induction Motor using Cycloconverter
Journal Title: INTERNATIONAL JOURNAL OF ENGINEERING TRENDS AND TECHNOLOGY - Year 2013, Vol 4, Issue 4
Abstract
This method is used to control the speed of the induction motor .The speed control by this method is simple and can be made economical by using different methods to control the operation of cycloconverter which in turn controls the performance of motor. The formula for speed for induction motor is Ns=120f/p. from this formula we can conclude that the speed of the motor can be varied in two ways, one is by changing the number of poles and the second method is by changing the frequency. The speed control through the first method is uneconomical and the number of poles can’t be varied under running conditions and the size of the machine also becomes bulky. These problems can be overcome by the second method. In this method the frequency can be varied under running conditions also and there is no change in the size of the motor. In this method the frequency changing device is cycloconverter. A cycloconverter is a power electronic device used to convert constant voltage constant Frequency AC power to adjustable voltage adjustable frequency AC power without a DC link. In among all the methods this method is simple, reliable and economical. The various speed of induction motor is obtained by varying the supply frequency by using cycloconverter.
Authors and Affiliations
B. SAI SINDURA #1 , B. N . KARTHEEK *2
Keywords
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