户用光伏并网逆变器穿越控制策略  

Research on Voltage Ride-through Technology of Household PV Grid-connected Inverter

作　　者：胡刚[1] 陈堃[1] 何俊[1] 杜镇安 

机构地区：[1]国网湖北省电力公司电力科学研究院,湖北武汉430077

出　　处：《湖北电力》2015年第12期32-35,44,共5页Hubei Electric Power

摘　　要：针对户用光伏发电并网应用日益普及的现状和电网对分布式电源穿越特性日益提高的要求,提出了一种基于电压前馈控制的户用光伏并网逆变器穿越控制策略。基于电压前馈控制,本策略能够在电网电压发生不定向突变瞬间,对由于PI闭环控制延时和功率平衡原则造成的并网电流突变进行抑制,并实现对电网电压的瞬时跟踪。通过以TMS320F28XXX为控制核心的实验验证了本策略的可行性和有效性。Aiming at the increasing popularity of household PV grid-connected application and the increasing demands for ride-through characteristic of distributed power,a household PV grid-connected inverter ride-through control strategy based on voltage feed-forward control is proposed in this paper.Based on voltage feed-forward control,when grid voltage undirectional mutation occurs,this strategy can achieve instantaneous tracking and suppress grid current mutation caused by PI close-loop control delay and power balance principle.The feasibility and effectiveness of this strategy is verified by the experiment in which TMS320F28 XXX is used as the control core.

关 键 词：光伏 并网逆变器 穿越 电压前馈 

分 类 号：TM464[电气工程—电器]