适用于飞机电网的并联型有源电力滤波器功率电路及其控制策略

Power Circuit of Shunt Active Power Filter Suitable to Aircraft Power Supply Network and Its Control Strategy

针对飞机电网频率较高、电源内阻抗较大的特点,采用并联型有源电力滤波器实现对电网谐波的集中抑制。采用改进的交叉矢量算法实现对基准补偿电流的检测和计算,采用滞环电流控制实现对较高频率电源系统瞬时电流的补偿,同时对直流侧电压进行稳压调节,并推导其传递函数。仿真和实验结果验证了将APF应用于飞机电网的正确性和可行性,表明采用本文的有源滤波器可集中抑制电网谐波电流,具有较好的补偿效果。

According to the features that the aircraft power supply network high frequency is of higher frequency and the internal impedance of the power source is high, in this paper it is proposed to use shunt active power filter （APF） to implement concentrated restraining of power network harmonics. Adopting improved crossover vector algorithm, the detection and calculation of compensation current reference is implemented; by use of hysteresis current control, the compensation of momentary current in high frequency power supply system is realized; meanwhile the voltage stabilizing control of DC side voltage is performed and its transfer function is derived. The feasibility and correctness of applying shunt APF in aircraft power supply network are validated by simulation and experiment results, and it shows that a good compensation result will be obtained while the shunt proposed APF is adopted in the concentrated restraining of harmonic currents in aircraft power supply network.