Space-vector-based hybrid pulse width modulation technique to reduce line current distortion in induction motor drives

Zhao, Di and Hari, Pavan Kumar VSS and Narayanan, Gopalaratnam and Ayyanar, Rajapandian (2012) Space-vector-based hybrid pulse width modulation technique to reduce line current distortion in induction motor drives. In: IET POWER ELECTRONICS, 5 (8). pp. 1463-1471.

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Abstract

Pulse width modulation (PWM) techniques involving different switching sequences are used in space vector-based PWM generation for reducing line current ripple in induction motor drives. This study proposes a hybrid PWM technique employing five switching sequences. The proposed technique is a combination of continuous PWM, discontinuous PWM (DPWM) and advanced bus clamping PWM methods. Performance of the proposed PWM technique is evaluated and compared with those of the existing techniques on a constant volts per hertz induction motor drive. In terms of total harmonic distortion in the line current, the proposed method is shown to be superior to both conventional space vector PWM (CSVPWM) and DPWM over a fundamental frequency range of 32-50 Hz at a given average switching frequency. The reduction in harmonic distortion is about 42% over CSVPWM at the rated speed of the drive.

Item Type:	Journal Article
Publication:	IET POWER ELECTRONICS
Publisher:	INST ENGINEERING TECHNOLOGY-IET
Additional Information:	Copyright for this article belongs to INST ENGINEERING TECHNOLOGY-IET, ENGLAND
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	31 Dec 2012 08:20
Last Modified:	31 Dec 2012 08:20
URI:	http://eprints.iisc.ac.in/id/eprint/45607

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