Analytical evaluation of harmonic distortion factor corresponding to generalised advanced bus-clamping pulse width modulation

Das, Soumitra and Binojkumar, Arathil Chellappan and Narayanan, Gopalaratnam (2014) Analytical evaluation of harmonic distortion factor corresponding to generalised advanced bus-clamping pulse width modulation. In: IET POWER ELECTRONICS, 7 (12). pp. 3072-3082.

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Abstract

A few advanced bus-clamping pulse width modulation (ABCPWM) methods have been proposed recently for a three-phase inverter. With these methods, each phase is clamped, switched at nominal frequency, and switched at twice the nominal frequency in different regions of the fundamental cycle. This study proposes a generalised ABCPWM scheme, encompassing the few ABCPWM schemes that have been proposed and many more ABCPWM schemes that have not been reported yet. Furthermore, analytical closed-form expression is derived for the harmonic distortion factor corresponding to the generalised ABCPWM. This factor is independent of load parameters. The analytical expression derived here brings out the dependence of root-mean-square (RMS) current ripple on modulation index, and can be used to evaluate the RMS current ripple corresponding to any ABCPWM scheme. The analytical closed-form expression is validated experimentally in terms of measured weighted total harmonic distortion (THD) in line voltage (V-WTHD) and measured THD in line current (I-THD) on a 6 kW induction motor drive.

Item Type:	Journal Article
Publication:	IET POWER ELECTRONICS
Publisher:	INST ENGINEERING TECHNOLOGY-IET
Additional Information:	Copyright for this article belongs to the INST ENGINEERING TECHNOLOGY-IET, MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	21 Jan 2015 06:35
Last Modified:	21 Jan 2015 06:35
URI:	http://eprints.iisc.ac.in/id/eprint/50729

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