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针对传统统一电能质量调节器(unified power quality conditioner,UPQC)并联补偿单元信号采集精度不高、控制方法存在相间耦合的问题,采用FUZZY-PID方法对补偿信号进行检测,利用电流滞环最优矢量控制方法对并联补偿单元进行控制。将这2种方法结合来控制并联补偿单元,不仅省去矢量变换与低通滤波环节,提高了检测精度,而且通过坐标变换解决了相间耦合问题,有效提高了控制的实时性和补偿精度。最后经仿真分析和实验验证,表明了该方法的有效性和可行性。
In order to solve the problem that the precision of signal acquisition of parallel compensation unit in traditional unified power quality conditioner (UPQC) is not high and the control method has the problem of interphase coupling, the compensation signal is detected by using FUZZY-PID method. The current hysteresis optimal vector The control method controls the parallel compensation unit. Combining these two methods to control the shunt compensation unit not only eliminates the vector conversion and low-pass filter links, improves the detection accuracy, but also solves the phase-to-phase coupling problem through coordinate transformation, effectively improving the real-time control and compensation accuracy. Finally, the simulation analysis and experimental verification show that the method is effective and feasible.