A novel power quality improved AC voltage controller for soft starting of squirrel cage induction motors

Mohamed Faizal; G. Kannayeram; Agnes Prema Mary

A novel power quality improved AC voltage controller for soft starting of squirrel cage induction motors

Mohamed Faizal

G. Kannayeram

Agnes Prema Mary

Vol. 24, No. 7, pp. 1139-1149, Jul. 2024

10.1007/s43236-024-00784-7

AC chopper

Power factor corrected AC-to-AC converters

Soft starting

Squirrel cage induction motor

Total harmonic distortion

Abstract

Soft starting of a squirrel cage induction motor (SCIM) is a general requirement in industries. Until now, the soft starting systems of squirrel cage induction motors have been using phase angle controllers implemented using thyristors. The major disadvantage of thyristors-based control is that the source current becomes polluted with harmonics. In addition, while phase angle-controlled soft starting schemes are suitable for star connected motors, they introduce high torque ripple resulting in noise and turbulence. To overcome this issue, a novel soft starting topology is proposed for the squirrel cage induction motors that guarantees improved power quality on both the source side and the load side. The proposed system uses a threephase power electronic chopper with a freewheeling arrangement. Throughout the starting process, the source side current is sinusoidal and the source side power factor is unity. The proposed method has been found to be useful for both Star and Delta connected squirrel cage induction motors. The proposed system has been validated using simulations in the MATLAB/Simulink environment and on an experimental prototype.

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Cite this article

[IEEE Style]

M. Faizal, G. Kannayeram, A. P. Mary, "A novel power quality improved AC voltage controller for soft starting of squirrel cage induction motors," Journal of Power Electronics, vol. 24, no. 7, pp. 1139-1149, 2024. DOI: 10.1007/s43236-024-00784-7.

[ACM Style]

Mohamed Faizal, G. Kannayeram, and Agnes Prema Mary. 2024. A novel power quality improved AC voltage controller for soft starting of squirrel cage induction motors. Journal of Power Electronics, 24, 7, (2024), 1139-1149. DOI: 10.1007/s43236-024-00784-7.