两类串并联逆变器组合系统的控制策略

Control Strategy for Two Categories of Series/Parallel Connection Inverters System

针对四种串并联逆变器组合系统分析了其各种可能的控制策略,并根据所采用控制策略的相似性以及输入端的联结方式将其分为两大类:输入并联型与输入串联型。对于前者优先考虑采用输出端的控制策略,而对于后者则需考虑采用复合式控制策略。从这两大类系统中各取一种(IPOP系统和ISOS系统)分别给出了与上述控制策略对应的具体控制方案,每个系统都引入了负载电流前馈技术但作用不尽相同。本文研制了样机,对上述控制方案进行了实验验证。

In this paper various possible control strategies are analyzed for four configurations of series/parallel inverter system,which can be divided into two categories,i.e.,input-parallel connection and input-series connection according to the similarity of control strategy and input connection. The output control strategy is preferred for the former one and the compound control strategy must be considered for the latter one. The IPOP system and ISOS system,as the representations of two categories respectively,are investigated about their separate detailed control methods,in which the load current feed-forward control is introduced for different purposes. The prototypes are built to verify the theoretical analysis.