Voltage and Frequency Control Optimization for Distributed Generation Based Grid

doi:10.11930/j.issn.1004-9649.2016.04.166.04

Abstract

Abstract: This paper introduces a multi-parameter hysteresis-band current control strategy based on grid connected inverters to address the intermittent and instability issues associated with photovoltaic power generation. The control strategy is based on a minimum DC side voltage of 600 V and uses ring-width feedback control together with hysteresis-band current control. A PI control is used to adjust the ring-width to maintain a relative stable on/off switching frequency, deliver high system energy conversion efficiency, improve the robustness and dynamic performance of the system, and deliver high quality power to the grid. Finally, a simulation of the inverter system under the premise of minimal DC side voltage of 600 V is presented, with results confirming the superior performance of the proposed control strategy.

Key words: distributed generation, multi-parameter, hysteresis control, switching frequency, DC side voltage

CLC Number:

TM714.3

LI Mingde, XIA Xiangyang, WANG Jinlong, LUO Jiping, HUANG Hai, CHEN Guoli, LIU Qifan. Voltage and Frequency Control Optimization for Distributed Generation Based Grid[J]. Electric Power, 2016, 49(4): 166-169.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2016.04.166.04

https://www.electricpower.com.cn/EN/Y2016/V49/I4/166

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