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主要讨论功率电路的设计方法。功率电路的设计主要和系统的稳态工作特性有关。因此首先对串联型有源电力滤波器进行了稳态分析 ,建立了系统的等效电路。然后 ,根据等效电路提出了一套基于稳态分析的功率电路设计方法。利用该方法推导出了功率电路设计所要求的各个部分与电网电压畸变率、额定负载、负载功率因数及系统是否进行无功补偿的关系 ,得到了明确的解析表达式。所提方法和推导的结果均通过了实验验证。
Main discussion power circuit design method. The design of the power circuit is mainly related to the steady-state operating characteristics of the system. Therefore, the steady-state analysis of series active power filter is firstly carried out and the equivalent circuit of the system is established. Then, a set of power circuit design method based on steady state analysis is proposed based on the equivalent circuit. The method is used to deduce the relationship between the various parts of the power circuit design and the grid voltage distortion ratio, rated load, load power factor and reactive power compensation of the system. A clear analytical expression is obtained. The proposed method and the derived results have passed the experimental verification.