脉冲电压下电力电子装备绝缘电荷特性研究综述

doi:10.19595/j.cnki.1000-6753.tces.210266

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Abstract Power electronic devices and equipment work under the pulse voltage with high repetition frequency and steep rising and falling edges in the long term. The insulation is more prone to occur early insulation failure, which seriously threatens the reliability and stability of power systems. Therefore, it is of great significance to clarify the mechanism of insulation degradation and breakdown under the pulse voltage, ensuring the safe and stable operation of power systems. In this paper, several common power electronic devices and its operation condition are introduced, and the important role of charge behaviors in insulation degradation is revealed through the discussion of the mechanism of insulation breakdown and flashover. Moreover, the effect of pulse voltage parameters on charge characteristics is introduced. Besides, the shortcomings of the current research are summarized and discussed. In future research, the charge test technology under pulse voltage needs to be improved, and the dynamic characteristics of the charge at the pulse edges should be deeply explored to clarify the mechanism of insulation degradation. The summery of these research results provides reference and theoretical guidance for the optimal design of electronic devices and equipment insulation materials and system under the pulse voltage.

Key words： Pulse voltage electrical insulation characteristics space charge surface charge

Received: 01 March 2021

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TM215

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	He Dongxin
	Zhang Tao
	Chen Xiaoguang
	Gong Wenjie
	Li Qingquan

Cite this article:

He Dongxin,Zhang Tao,Chen Xiaoguang等. Research Overview on Charge Characteristics of Power Electronic Equipment Insulation under the Pulse Voltage[J]. Transactions of China Electrotechnical Society, 2021, 36(22): 4795-4808.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.210266 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/I22/4795

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