【摘要】 建立了2种适用于中高压系统的并联型混合有源滤波器的通用电气膜型,在此基础上,针对这种混合型有源滤波器的特点,提出了基于d-q变换的谐波电流分频控制方法,提高了系统控制精度;为抑制直流侧电压的波动乃至抬升现象,提出了通过在基波谐振支路添加适当容性阻抗使直流侧电容能够和电网交换能量,然后结合基于基波电流闭环调节的直流侧电压控制方法.实验及仿真结果证明了所提分频控制方法能够有效提高并联型混合有源滤波器在中高压系统下的滤波性能.更多还原

【Abstract】 The universal electric model of two kinds of hybrid active power filters suitable for high power grid was established.Based on the analysis of the universal electric model and its principle,a harmonic current frequency dividing control method based on d-q transformation was proposed,which was suitable for the current control in HAPF used in high power grid.In order to stabilize the DC-side voltage,a proper capacitor was proposed to be installed in the fundamental series resonance circuit to exchange the energy between the grid and DC-side, and then the control method of DC-side voltage based on the closed-loop regulation of the fundamental reactive current was proposed.Experiment and simulation results have shown that the frequency dividing control method can greatly improve the performance of HAPF in high power grid.更多还原