四桥臂变换器驱动开绕组永磁同步电机系统的死区效应分析与抑制

doi:10.19595/j.cnki.1000-6753.tces.171198

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Abstract In order to solve the problems of high cost and complexity of the open winding permanent magnet synchronous machine (OW-PMSM) system based on the dual-inverter, this paper proposed a novel low-cost four-leg converter for OW-PMSM. On the basis of analysis of the active voltage vectors and corresponding SVPWM strategy for the four-leg converter, the asymmetric distribution rule of the dead-time voltage due to the multiplex bridges was presented for the current distortion analysis. The compensation method of the average dead-time voltage for the proposed system with the separated zero-sequence control scheme was given to suppress the current harmonics. The total harmonics distortion (THD) of the currents could be reduced to 5% or so, and the proposed drive system with the four-leg converter could achieve the same output performance as the OW-PMSM with dual-inverter. Simulations and experiments verify the effectiveness of the dead-time analysis and the proposed suppression strategy.

Key words： Open winding permanent magnet synchronous machine four-leg converter multiplex bridges asymmetric distribution rule of the dead-time voltage compensation method of the average dead-time voltage

Received: 18 August 2017 Published: 14 September 2018

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TM351

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	Wei Jiadan
	Xue Jiacheng
	Zhou Bo
	Dai Shengnan
	Ji Jianhao

Cite this article:

Wei Jiadan,Xue Jiacheng,Zhou Bo等. Dead-Time Effect Analysis and Suppression for Open-Winding PMSM System with the Four-Leg Converter[J]. Transactions of China Electrotechnical Society, 2018, 33(17): 4078-4090.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.171198 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I17/4078

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