Hysteresis current controller for a general n-level inverter fed drive with online current error boundary computation and nearly constant switching frequency

Dey, Anubrata and Azeez, Najath Abdul and Mathew, Kallarackal and Gopakumar, Kumarukattan Nair and Kazmierkowski, Marian P (2013) Hysteresis current controller for a general n-level inverter fed drive with online current error boundary computation and nearly constant switching frequency. In: IET POWER ELECTRONICS, 6 (8). pp. 1640-1649.

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Abstract

A space vector-based hysteresis current controller for any general n-level three phase inverter fed induction motor drive is proposed in this study. It offers fast dynamics, inherent overload protection and low harmonic distortion for the phase voltages and currents. The controller performs online current error boundary calculations and a nearly constant switching frequency is obtained throughout the linear modulation range. The proposed scheme uses only the adjacent voltage vectors of the present sector, similar to space vector pulse-width modulation and exhibits fast dynamic behaviour under different transient conditions. The steps involved in the boundary calculation include the estimation of phase voltages from the current ripple, computation of switching time and voltage error vectors. Experimental results are given to show the performance of the drive at various speeds, effect of sudden change of the load, acceleration, speed reversal and validate the proposed advantages.

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, ENGLAND
Department/Centre:	Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited:	13 Jun 2014 07:16
Last Modified:	13 Jun 2014 07:16
URI:	http://eprints.iisc.ac.in/id/eprint/49234

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