CAJ | 학술논문

并联型有源电力滤波器直流侧电压值直接影响谐波补偿特性,文中分析了直流侧电压的取值对补偿特性的影响。首先,分别在单相和三相系统中,针对典型的晶闸管整流加阻感负载为系统负载的负载电流,通过对等效电路的分析,得出完全补偿谐波时所需的直流侧电压理论最小值;然后,当直流侧电压小于理论最小值时,考虑在正弦脉宽调制方法下,通过仿真曲线,给出了补偿后电源电流总谐波畸变率（THD）与直流侧电压之间的定量关系,这些曲线为直流侧电压的选择提供了参考。仿真和实验验证了所述直流侧电压值选取方法的正确性。
병련형유원전력려파기직류측전압치직접영향해파보상특성,문중분석료직류측전압적취치대보상특성적영향。수선,분별재단상화삼상계통중,침대전형적정갑관정류가조감부재위계통부재적부재전류,통과대등효전로적분석,득출완전보상해파시소수적직류측전압이론최소치;연후,당직류측전압소우이론최소치시,고필재정현맥관조제방법하,통과방진곡선,급출료보상후전원전류총해파기변솔（THD）여직류측전압지간적정량관계,저사곡선위직류측전압적선택제공료삼고。방진화실험험증료소술직류측전압치선취방법적정학성。
The value of voltage in dc link of parallel-type active power filters （PAPFs） is directly influencing the performance of compensation. An extensive analysis of compensation characteristics in PAPF is carried out. First, respectively in the single- phase system and the three-phase system for load current of a thyristor rectifier with resistive and inductive load, the theoretic minimum of voltage in dc link for harmonic full compensation is obtained through equivalent circuits analysis. Then, when voltage in dc link is smaller than the theoretic minimum and under sinusoidal pulse width modulation control strategy, the quantitative relationship between the total harmonic distortion （THD） of current after compensation and voltage in dc link is also elaborated by using the simulation curves. With these curves, the selection of voltage rated value in dc link for PAPF is quite straight forward. The simulation and experimental results verify the correction of selected volt~ge in dc link.