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介绍了 3种基于电压源型逆变器的用于配电系统的新型动态电能质量补偿器———有源滤波器、动态电压恢复器和统一电能质量控制器 ,与传统的晶闸管控制的投切电容器和 /或电抗器等调节手段相比 ,具有响应速度快、调节连续、功能多样、体积小等诸多优点 ,能有效补偿电压跌落、闪变等动态电能质量问题。对电压源型逆变器的工作机理作了较详细的论述 ,与电流型逆变器相比 ,不存在换流不成功而导致高电压的危险 ,具有可靠性高、控制灵活等优点。
This paper introduces three kinds of new dynamic power quality compensators for power distribution system based on voltage source inverter --- active filter, dynamic voltage restorer and unified power quality controller. Compared with the traditional control of thyristor Compared with the adjusting means such as a capacitor, a capacitor and / or a reactor, the invention has the advantages of fast response, continuous adjustment, diverse functions and small size, and can effectively compensate dynamic power quality problems such as voltage sag and flicker. The working principle of the voltage source inverter is discussed in detail. Compared with the current inverter, there is no danger of high voltage caused by the unsuccessful commutation, so it has the advantages of high reliability and flexible control.