摘要
给出了并联型有源电力滤波器系统简化数学模型,详细探讨了有源电力滤波器中常采用的三角波脉宽调制电流控制方法,在此基础上提出了一种改进的三角波脉宽调制电流控制方法。通过理论推导得出,在传统控制方法的输出指令电压中增加了一个与电源电压瞬时值成正比的量,提高了变流器输出电压的准确性,使APF实际输出电流能够精确地跟踪指令电流的变化。论文给出了这两种电流控制方法的 Simulink仿真结果,通过比较仿真结果验证了改进的三角波脉宽调制电流控制方法在谐波补偿效果和电流控制精度方面更有优越性。
This paper presents a simplified mathematic model of parallel APF, and an improved method of current control with triangle-wave pulse-width modulation. Compared with traditional method, a value proportional to source voltage is added to the reference voltage, which improves the accuracy of APF output voltage and makes the output current following the reference current precisely. The simulation results show that in two aspects： harmonic compensation and precision of current control, the improved current control method is better than the traditional one.
出处
《高压电器》
EI
CAS
CSCD
北大核心
2006年第1期70-72,共3页
High Voltage Apparatus
关键词
有源电力滤波器
三角波
脉宽调制
电流控制方法
active power fiher（APF）
triangle-wave
pulse-width modulation
current tracking control
