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电力系统中的谐波源大多为三相结构。根据基波磁通补偿的滤波新原理研制了一套三相有源电力滤波装置 ,该装置采用 3个独立的串联变压器和 3套独立的逆变器 ,以便应用于实际中可能出现不对称的三相负载。通过 MATLAB仿真确定了串联变压器和无源滤波器参数 ,根据自动控制原理和滞环电流控制的特点推导了控制器参数的选择原则 ,研究了有源电力滤波器投入和切除时的过渡过程。现场运行结果证明了该装置极好的滤波特性及平稳的过渡过程
Harmonic sources in power systems are mostly three-phase structures. A new three-phase active power filter is developed based on the principle of fundamental magnetic flux compensation filter. The device uses three independent series transformers and three independent inverters to be used in practical applications where asymmetry Three-phase load. The parameters of series transformer and passive filter were determined by MATLAB simulation. According to the principle of automatic control and the characteristics of hysteresis current control, the principle of controller selection was deduced. The transition process of input and removal of active power filter was studied. The result of field operation proves the excellent filtering characteristics and smooth transition of the device