Decoupled Vector Space Decomposition Based Space Vector Modulation for Dual Three-Phase Three-Level Motor Drives

Wang, Zheng, Wang, Yibo, Chen, Jian and Hu, Yihua ORCID: 0000-0002-1007-1617 (2018) Decoupled Vector Space Decomposition Based Space Vector Modulation for Dual Three-Phase Three-Level Motor Drives. IEEE TRANSACTIONS ON POWER ELECTRONICS, 33 (12). pp. 10683-10697.

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Abstract

In this paper, a novel space vector modulation (SVM) strategy is proposed and designed for dual three-phase three-level motor drives based on vector space decomposition (VSD), which could be applied for high-power and high-reliability applications. The key of the proposed method is to design two decoupled groups of voltage vector candidates for synthesis on α - β subspace and x - y subspace, respectively. The two decoupled groups of voltage vectors will synthesize respective voltage references on α - β subspace and x - y subspace, while having no impact on each other. The redundant small voltage vectors and zero-sequence voltage vectors are utilized to mitigate voltage oscillation in midpoint of dc link and suppress zero-sequence current component for dual three-phase windings with a common neutral. For comparison, another VSD-SVM strategy is designed based on traditional solution, which cannot offer closed-loop control on x - y subspace. Both simulation and experiments have been given to verify that the proposed decoupled VSD-SVM can suppress harmonic components on x - y subspace besides tracking torque components on α - β subspace. Furthermore, the harmonic performance of the proposed decoupled VSD-SVM has been compared with the traditional VSD-SVM strategy and the carrier disposition based pulsewidth modulation.

Item Type:	Article
Uncontrolled Keywords:	Harmonic performance, multilevel inverter, multiphase motor drives, space vector modulation (SVM), vector space decomposition (VSD)
Depositing User:	Symplectic Admin
Date Deposited:	05 Sep 2018 09:22
Last Modified:	16 Mar 2024 01:52
DOI:	10.1109/TPEL.2018.2811391
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3025885