轨道交通牵引系统空间矢量脉宽调制同步过调制策略研究

doi:10.19595/j.cnki.1000-6753.tces.L80174

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Abstract The rail transit traction system has a wide operating speed range and high stability requirements, which makes the traction system should have a smooth transition from asynchronous modulation to square wave. The usual solution is to adopt a hybrid pulse width modulation strategy. At present, there are two commonly used hybrid pulse width modulation strategies, one is to use a non-carrier modulation to connect asynchronous modulation and square wave, and the other is to adopt a synchronous overmodulation strategy to connect asynchronous modulation and square wave. In this paper, the advantages and disadvantages of these two methods are analyzed. For the synchronous overmodulation strategy, the traditional asynchronous overmodulation and synchronous over- modulation are introduced. Combined with the defects of the traditional method, this paper proposes an advanced synchronous space vector pulse width modulation (SVPWM) overmodulation strategy. Finally, through simulation and experiment, it is proved that the advanced synchronous SVPWM overmodulation strategy has the advantages of simple implementation and no ripple in the transition period.

Key words： Rail transit traction drive space vector pulse width modulation (SVPWM) over- modulation

Received: 20 August 2018 Published: 05 March 2020

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TM46

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	Articles by authors
	Chen Jie
	Li Jun
	Qiu Ruichang
	Xu Chunmei
	Liu Zhigang

Cite this article:

Chen Jie,Li Jun,Qiu Ruichang等. Research on Space Vector PWM Synchronous Overmodulation in Rail Transit Traction System[J]. Transactions of China Electrotechnical Society, 2020, 35(zk1): 91-100.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L80174 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/Izk1/91

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