改进型微源下垂控制策略研究

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Abstract The conventional microsource wireless droop control base on “power-voltage-current” close loop is widely used. The power sharing performance of this method is significantly affected by the resistive line impedance. This paper analyzes the effectiveness of two existing solutions: the adjustment method by choosing proper control parameters has limited regulating range, which means a poor performance; the virtual impedance control method has a wide range. But it has the problem of voltage sag, this paper provides an improved method with no Q-V power close loop. This method simulates the virtual impedance as the virtual synchronous generator inductance; uses the virtual impedance voltage to realize the microsource Q-V voltage droop characteristic, which can save the microsource voltage sag amplitude. Finally, simulation results and experimental results on the parallel inverter are provided to prove the performance of this new control method.

Key words： Microgrid distributed source droop control virtual inductance virtual synchronous generator

Received: 16 May 2013 Published: 18 June 2014

PACS:

TM464

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	Articles by authors
	Jing Long
	Huang Xing
	Wu Xuezhi

Cite this article:

Jing Long,Huang Xing,Wu Xuezhi. Research on Improved Microsource Droop Control Method[J]. Transactions of China Electrotechnical Society, 2014, 29(2): 145-152.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I2/145

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