A novel hysteresis current control method for active power filter with low switching loss

作者：Zeng, Jiang^*; Liu, Yan; Ye, Xiao-Jun; Yu, Tao

来源：Dianwang Jishu/Power System Technology, 2010, 34(1): 73-78.

• Active power filters
• Harmonic elimination
• Hysteresis band
• Hysteresis current control
• Switching loss

A novel hysteresis current control method for active power filter (APF) with low switching loss is proposed. By use of the feature of APF that its output current is mainly composed of harmonic currents, thus the sum of absolute value of three-phase current greatly fluctuates within a cycle, the controller adjusts the switching frequency according to the value of output current of APF to reduce the switching loss effectively with the same control precision. The relation between optimal switching frequency and fluctuation range of current-norm is derived theoretically, and a new hysteresis current controller is designed. Simulation results show that the proposed method can hold the overall control precision while the total switching loss is reduced effectively.

• 出版日期2010-1
• 单位华南理工大学