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所属单位：自动化学院

发表刊物：Dianli Xitong Zidonghue

摘要：Synchronverters can imitate the characteristics of the synchronous generators including the rotor inertia, frequency and voltage regulation, which is helpful in improving the operational performance of the distribution network or microgrid. This paper focuses on the control scheme for synchronverters under non-ideal grid condition. The control model of the synchronverters in time domain is introduced briefly. Then, the impacts of the unbalanced and harmonic grid voltages to the grid current are analyzed. An improved method is proposed to calculate the current reference value based on the double second order generalized integrator, in which the improved grid voltage feed-forward control scheme is adopted to suppress the harmonic and unbalanced components of current affected by non-ideal grid. The basic relationship and the design method between the main parameters of the improved grid voltage feed-forward control strategy for the LC synchronous inverter are derived and analyzed, and a reasonable theoretical explanation is given based on the output impedance characteristics of the synchronous inverters. Finally, both simulation and experimental platform are established, and simulation and experimental results verify the correctness and feasibility of the proposed control scheme. © 2018 Automation of Electric Power Systems Press.

ISSN号：1000-1026

是否译文：否

发表时间：2018-05-10

合写作者：Shen, Pengpeng,李韪韬,陈鑫,Chen, Jiawei

通讯作者：陈杰,Shen, Pengpeng,陈杰