光伏并网逆变器控制策略研究
摘要:逆变型分布式电源(inverter-based distributed generation，IBDG)以良好控制及转换电能的能力在微电网中得到了广泛的应用。将IBDG等效为直流电压源，逆变器控制采用双闭环控制策略进行并网控制。外环为电压环，主要是针对逆变器的输入端电压，控制其维持稳定；内环为电流环，主要目标是控制逆变器的输出电流与电网电压同频同相。在PSCAD/EMTDC软件中搭建逆变器模型，并通过设置负荷的投切以验证所制定的逆变器控制策略的有效性；仿真运行表明，采用双闭环控制策略的逆变器在负荷变化的情况下的输出依旧与设定的预期相符。
Abstract：Inverter-based distributed generation (IBDG) supply is widely used in microgrid for its ability to control and convert electrical energy well. In this paper, IBDG is equivalent to DC voltage source, and inverter control adopts double closed-loop control strategy for grid connection control. The outer ring is a voltage loop, which is mainly for the input voltage of the inverter, and is controlled to maintain stability; The inner ring is a current loop, whose main goal is to control the output current of the inverter to be in phase with the grid voltage. The inverter model is built in the PSCAD/EMTDC, and the effectiveness of the proposed inverter control strategy is verified by setting the load switching. The simulation operation shows that the output of the inverter with double closed-loop control strategy in the case of load change is still consistent with the set expectations.
标题：光伏并网逆变器控制策略研究
title:Control Strategy of Photovoltaic Grid-Connected Inverter
作者：廖碧莲,唐江琦,吴誉寰,高中林
authors:LIAO Bilian ,TANG Jiangqi,WU Yuhuan,GAO Zhonglin
关键词：微电网,逆变型分布式电源(IBDG),双闭环控制,
keywords:micro-grid,inverter-based distributed generation (IBDG),double closed-loop control,
发表日期：2019-07-01
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