具有串联有源滤波功能的中压 动态电压恢复器设计

提出利用中压动态电压恢复器装置实现串联谐波补偿功能的方法,以简化动态电压恢复器主电路结构,并提高其利用效率。首先对比分析了动态电压恢复器与串联谐波补偿器主电路结构的关联性和差异性,在分析两者主电路参数设计原则和方法的基础上,提出了同时满足实现两种功能要求的LC滤波器的参数设计方法。通过采用PR控制实现动态电压补偿功能,采用PI控制实现串联谐波补偿功能,利用Bode图分析了两种工作状态下的传递函数特性。最后通过物理实验验证了所提方案的可行性和有效性。

Design on the Mid-voltage Dynamic Voltage Restorer with Series Active Power Filter Function

The design to provide mid-voltage dynamic voltage restorer(DVR) with the function of series harmonic compensation to simplify the main circuit structure and improve the efficiency of DVR is proposed in this paper. Firstly, the relevance and differences of main circuit structure between DVR with series active power filter(SAPF) are compared. Based on the design principles of the main circuit parameters of DVR and SAPF, a design method of LC filter that can achieve both functions is proposed. PR control method is adopted to achieve dynamic voltage restorer and PI control method is used to achieve series active power filter. Bode diagrams are used to analyze the characteristics of transfer functions of the two work state. Finally, the physics experiments show the feasibility and effectiveness of the proposed method.