Modelling and power quality enhancement of induction motor with soft starter using synchronous reference frame theory

Charles, Sébastien; Vivekanandan, C.

doi:10.1049/cp.2011.0333

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are alternatives in controlling the starting current of the motor. A PWM AC chopper is a suitable candidate technique since this technique offers less harmonic contents in the motor voltages and currents when being compared with the harmonic contents from the conventional phasecontrol technique [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Starting Current Characteristics for Three-Phase Induction Motor Due to Phase-control Soft Starter and Asynchronous PWM AC Chopper

Thanyaphirak¹,

Kinnares²,

Kunakorn³

2017

Journal of Electrical Engineering and Technology

View full text Add to dashboard Cite

-This paper presents the comparison of starting current characteristics of a three-phase induction motor fed by two types of soft starters. The first soft starter under investigation is a conventional AC voltage controller on the basis of a phase-control technique. The other is the proposed asynchronous PWM AC chopper which is developed from the conventional synchronous PWM AC chopper. In this paper, the proposed asynchronous PWM AC chopper control scheme is developed by generating only two asynchronous PWM signals for a three-phase main power circuit (6 switching devices) from a single voltage control signal which is compared with a single sawtooth carrier signal. By this approach, the PWM signals are independent and easy to implement since the PWM signals do not need to be synchronized with a three-phase voltage source. Details of both soft starters are discussed. The experimental and simulation results of the starting currents are shown. It is found that the asynchronous PWM AC chopper efficiently works as a suitable soft starter for the threephase induction motor due to that the starting currents are reduced and are sinusoidal with less harmonic contents, when being compared with the starting current waveforms using the conventional phase-control starting technique. Also the proposed soft starter offers low starting electromagnetic torque pulsation.

show abstract

Section: Introductionmentioning

confidence: 99%