模块化不间断电源自适应均流控制技术

doi:10.19595/j.cnki.1000-6753.tces.160820

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Abstract The virtual circulating current impedance was introduced to suppress the circulating current existed in parallel redundant system of modularized uninterruptible power supply (UPS). This paper proposed an adaptive current sharing control strategy with excellent steady-state and dynamic performance. The influences of connection inductor and control method on the output impedance and circulating current impedance were discussed. On this basis, a novel adaptive current sharing control algorithm was designed. The effect of dynamic circulating current suppression was enhanced with appropriate impedance controller parameters. Meanwhile, the DC magnetic bias of transformer was eliminated by DC offset control of inductor current, which improved the stability of parallel system. Experimental results validate the proposed control strategy.

Key words： Uninterruptible power supply parallel virtual circulating current impedance adaptive current-sharing control DC magnetic bias

Published: 16 January 2018

PACS:

TM464

Fund:国家自然科学基金（51477067）和光宝电力电子技术科研基金（PRC20161047）资助项目

Corresponding Authors: 陈昌松男,1977年生,博士,副教授,研究方向为新能源发电的发电预测和能量管理。E-mail: ccsfm@163.com

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	Cai Jiuqing
	Chen Changsong
	Duan Shanxu
	Liu Peng

Cite this article:

Cai Jiuqing,Chen Changsong,Duan Shanxu等. Adaptive Current-Sharing Control Technique for Modular Uninterruptible Power Supply[J]. Transactions of China Electrotechnical Society, 2017, 32(24): 153-159.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.160820 OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I24/153

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