Simulation of load & Electromagnetic Torque Controlled Single Phase asynchronous (induction) motor using Single phase Cyclo-converter

  Pooja sharma,  Javed Khan Bhutto

This paper is used to control the output parameters of load & Electromagnetic torque and speed of motor and also magnitude & phase difference of the motor. the Electromagnetic torque and speed of motor can be made economical by controlling the operation of cyclo-converter which in turns control the output parameters of single phase (split phase) asynchronous motor. When motor’s Electromagnetic torque is controlled then motor speed is automatically constant and also nature of speed, torque, and voltage are inter-dependent of variegated load of motor. The speed of single phase asynchronous motor can be controlled by two methods, one method is by changing the number of poles & second method is by changing the frequency. The output parameter of the motor controlled through first method is not economical but under running condition number of poles can’t be varied and size of the machine also get large. These problem can be solve by the second method. In the second method the frequency can be variegated under running condition & also no change in size of motor. In this method the frequency changing device is used as cyclo-converter. A Cyclo-converter is power electronics device that is used to convert constant voltage constant frequency. The various speed of the single phase asynchronous motor is obtained by varying the supply frequency by using cyclo-converter.The phase difference of an alternating waveform can vary from between 0 to its maximum time period, T of the waveform during one complete cycle. The formula for phase difference from between 0 to its maximum time period, T is inversely proportional to the frequency of firing pulses, T=1/F. The cyclo-converter is changing the input frequency, output frequency is less the input frequency. The cyclo-converter is controlled by its firing pulses.

Keywords- Single phase cyclo-converter, single phase(split phase) asynchronous motor , switches, logic gate NOT, Pulse generator, Matlab 2011a.

Unique Identification Number - IJEDR1803114
Page Number(s) - 687-694
Pubished in - Volume 6 | Issue 3 | September 2018
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  Pooja sharma,  Javed Khan Bhutto,   "Simulation of load & Electromagnetic Torque Controlled Single Phase asynchronous (induction) motor using Single phase Cyclo-converter", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.6, Issue 3, pp.687-694, September 2018, Available at :http://www.ijedr.org/papers/IJEDR1803114.pdf