T型三电平逆变器馈电双三相PMSM直接转矩控制

doi:10.19595/j.cnki.1000-6753.tces.L70669

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Abstract A direct torque control (DTC) strategy of T-type three-level inverter fed dual three-phase PMSM drives is proposed and studied in this paper. This system possesses the advantages of low torque pulsations, low current stress and strong fault tolerance from dual three-phase PMSM, while inheriting the characters of good harmonic performance and high reliability from T-type three-level inverter. The double space vector modulation (SVM) technology based direct torque control scheme proposed in this paper retains the fast dynamic performance of DTC. Compared to conventional vector space decomposition (VSD) based SVM technology, the proposed double SVMs technology can achieve good harmonic suppression effect, while avoiding complicated process of voltage vector synthesis. A closed-loop harmonic current controller is also designed in the proposed strategy, which can suppress the low order harmonics caused by caused by motor asymmetry, EMF harmonic and dead-time effectively. The experimental result are given to verify the validity and feasibility of the DTC strategy of T-type three-level inverter fed dual three-phase PMSM drives.

Key words： Dual three-phase PMSM drives T-type three-level inverter direct torque control harmonic suppression

Received: 20 August 2016 Published: 14 September 2017

PACS:

TM301.2

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	Wang Xueqing
	Wang Zheng
	Cheng Ming

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Wang Xueqing,Wang Zheng,Cheng Ming. Direct Torque Control of T-Type Three-Level Inverter Fed Dual Three-Phase PMSM Drives[J]. Transactions of China Electrotechnical Society, 2017, 32(增刊1): 116-123.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L70669 OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I增刊1/116

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