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Speed Control of Induction Motor using SCR Based Cycloconverter for Variable Torque Load Drive Application

Author(s):

Prasenjit Sontakke , WAINGANGA COLLEGE OF ENGINEERING AND MANAGMENT,NAGPUR; Surbhi Shrivastava, WAINGANGA COLLEGE OF ENGINEERING AND MANAGMENT,NAGPUR

Keywords:

Single Phase to Single Phase Cycloconverter, Split Phase Induction Motor, Voltage Regulator, Supply Frequency

Abstract

The 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. Single-phase induction motors are widely used in many applications due to their energy efficient characteristics. Improvements in its performance mean a great saving in electrical energy consumption. A cycloconverter fed variable frequency motor is a typical example of such improvement. In this regard, the paper presents an analysis of the performance and speed control of the split phase induction motor when it is fed with cycloconverter. The various speed of induction motor is obtained by varying the supply frequency by using cycloconverter. 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 other 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 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.

Other Details

Paper ID: IJSRDV5I41508
Published in: Volume : 5, Issue : 4
Publication Date: 01/07/2017
Page(s): 1847-1849

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