【摘要】 由于单相STATCOM具有输出无功电流谐波含量低、响应速度快等优点而适用于不平衡负载的平衡化补偿。提出了采用单相STATCOM实现平衡化补偿的两种主电路结构及电压 无功综合控制方法。三相补偿电流相量采用对称分量法通过矢量变换获得 ,单相无功功率采用单相瞬时无功功率算法得到 ,单相逆变器采用特定谐波消除PWM算法 (SHE PWM )以保证输出无功电流的总谐波畸变率 (THD)小于 5 % ,同时保证直流侧电容电压的稳定。试验结果验证了STATCOM进行平衡化补偿的快速性更多还原

【Abstract】 Due to the low output current harmonic and fast response characteristics,single phase STATCOM is suitable for balancing compensation of three phase unbalanced load.Two kinds of main circuit configuration and integrative voltage reactive power control scheme for balancing compensation with single phase STATCOM are proposed.The three phase compensation current is obtained through vector transform with symmetrical weight method.The single phase reactive power is calculated with single phase instantaneous reactive power concept.Selective harmonic eliminated PWM (SHE PWM) is employed to ensure that the THD of output current is less than 5% and the DC voltage is controlled.The result proves the fast response of output reactive power for balancing the unbalanced load.更多还原