一种新型有源电力滤波器双滞环电流控制策略

有源电力滤波器APF(active power filter)是一种动态抑制谐波、补偿无功的电力电子装置,能够对不同大小和频率的谐波进行快速实时跟踪补偿,有效降低电力系统的谐波含量.但APF长期处于高频通断的工作状态,造成较高的功率损耗和故障率,降低了经济性和工作可靠性.针对高功损和高故障率的问题,分析传统滞环电流控制...

Novel Dual Hysteresis Current Control Strategy for Active Power Filter

An active power filter (APF) is a kind of power electronic device with dynamic harmonic suppression and reactive power compensation, which can track and compensate harmonics of various sizes and frequencies timely and rapidly, reducing the harmonic content of power system effectively. However, the APF is always working in high-frequency on-off states, which results in higher power loss and failure rate, thereby reducing its economy and operation reliability. To solve the above problems, the shortage of the traditional hysteresis current control strategy is analyzed, and a novel hysteresis current control strategy is proposed, which reasonably controls the on-off of the APF switching device, thus reducing the switching frequency and improving the harmonic compensation effect. In this way, the operation reliability of the APF and its harmonic compensation performance are improved. Finally, simulation and experimental results verified the feasibility and effectiveness of the proposed operation strategy.