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并联有源电力滤波器预测电流跟踪控制方法,根据其电路结构及电流跟踪特点,延展传统滞环跟踪控制思想,以数字化的方式单步预测滞环宽度、单步预测脉冲宽度调制(PWM)信号占空比,实现可控功率开关器件以固定的开关频率工作,优化了三相桥式逆变器,并保证补偿电流在一定的误差范围内跟踪指令电流信号的变化,达到滤除谐波、补偿无功的目的。通过数字仿真实验,表明此方法是可行有效的。
According to its circuit structure and current tracking characteristics, the traditional hysteresis tracking control idea is extended and the hysteresis width and single-step prediction pulse width modulation (PWM) signal are digitally predicted Duty ratio to achieve controllable power switching devices to work with a fixed switching frequency, optimizing the three-phase bridge inverter, and to ensure that the compensation current within a certain error tracking command current signal changes to achieve the filter harmonic, The purpose of compensation for reactive power. Through numerical simulation, it shows that this method is feasible and effective.