The reactive power compensation is an important engineering in the power system . the active reactive power compensator designed in this text takes the instantaneous reactive power theory of three - phase as foundation , and is formed by the reactive current testing circuit , current tracking control circuit and the main circuit , and among them the current tracking control circuit is formed by instruction current arithmetic circuit , current polarity checkout circuit and current tracking control logic circuit three parts in the circuit form 无功功率补偿是电力系统中的一项重要工程，本文所设计的有源无功功率补偿器是以三相瞬时无功功率理论为基础的，它由无功电流检测电路、电流跟踪控制电路和主电路三大部分组成，其中电流跟踪控制电路由指令电流运算电路、电流极性检测电路和电流跟踪控制逻辑电路三部分构成。
