十二相整流发电机并联供电系统直流中点环流特性及其抑制方法

doi:10.19595/j.cnki.1000-6753.tces.210312

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Abstract Twelve-phase rectifier generator is the main power generation equipment of marine medium voltage DC integrated power system. By paralleling the positive poles, negative poles and DC neutral points of the rectifier generators, three-wire DC power is provided to the medium voltage electrical equipment in the whole ship, which can reduce the insulation and DC voltage sharing control pressure of medium voltage electrical equipment, but the risk of DC neutral point circulating current in the system is increased. In order to solve the problem, this paper established an equivalent circuit model, revealed the mechanism and frequency characteristics of DC neutral point circulating current of multiple rectifier generators in parallel, a design principle of grounding resistance was proposed, which can effectively restrain DC neutral point circulating current. Time-domain simulation and physical experiment demonstrate the correctness of mechanical analysis results.

Key words： Medium voltage DC integrated power system twelve-phase rectifier generator DC neutral point high resistance grounding circulation suppression

Received: 11 March 2021

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TM732

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	Huang He
	Ma Fa
	Fu Lijun
	hang Xiangming
	Jin Congkai

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Huang He,Ma Fa,Fu Lijun等. DC Neutral Point Circulating Current Characteristics and Suppression Method of Twelve-Phase Rectifier Generator Parallel Power Supply System[J]. Transactions of China Electrotechnical Society, 2022, 37(7): 1760-1767.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.210312 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I7/1760

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