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 無功功率補(bǔ)償是電力系統(tǒng)中的一項(xiàng)重要工程,本文所設(shè)計(jì)的有源無功功率補(bǔ)償器是以三相瞬時(shí)無功功率理論為基礎(chǔ)的,它由無功電流檢測電路、電流跟蹤控制電路和主電路三大部分組成,其中電流跟蹤控制電路由指令電流運(yùn)算電路、電流極性檢測電路和電流跟蹤控制邏輯電路三部分構(gòu)成。