DC-link Capacitors Voltage Control using a Multi-phase Induction Motor Load Driven by a Multilevel Inverter

Debnath, T and Gopakumar, K and Umanand, L (2022) DC-link Capacitors Voltage Control using a Multi-phase Induction Motor Load Driven by a Multilevel Inverter. In: IECON Proceedings (Industrial Electronics Conference)Volume 2022-October2022, 17 - 20 October 2022, Brussels.

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Abstract

In this paper, DC-link capacitors voltage deviation control is achieved using a symmetrical six-phase induction machine (IM) load driven by a nine-level inverter. The motor phase currents are utilised intelligently to control the common coupling points (CCPs: terminal connections series-connected capacitors across a DC-link). Each phase of this inverter consists of a five-level stacked inverter and two cascaded H-bridge (CHB) inverters, which can be built using low voltage switching devices. Simultaneous control of DC-link capacitors and CHB capacitors balancing is achieved by using the pole voltage redundancies. This concept is validated using a standard simulation tool with a six-phase load under the 'V/f' control operation. The simulation results for steady-state and transient conditions are provided at low speed and high speed of operation with low and high power factors conditions. © 2022 IEEE.

Item Type:	Conference Paper
Publication:	IECON Proceedings (Industrial Electronics Conference)
Publisher:	IEEE Computer Society
Additional Information:	The copyright for this article belongs to IEEE Computer Society.
Keywords:	Balancing; Bridge circuits; Electric inverters; Electric loads; Electric machine control; Electric power factor; Induction machine, Balancing; Cascaded H-bridge; CCP; Common coupling; Common coupling point; Dc-link; Induction machines; Inductions motors; Inverte; Multilevels; Neutral points; Single DC-link; Split DC-link; Stacked, Induction motors
Department/Centre:	Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited:	18 Jan 2023 09:48
Last Modified:	18 Jan 2023 09:48
URI:	https://eprints.iisc.ac.in/id/eprint/79205

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