谐波补偿重复控制及其在逆变器控制中的应用  

Repetitive Control Scheme for Harmonic Compensation and Its Application in Inverters

作　　者：杨豪 赵军红[1] 朱雁南 刘岳滨 

机构地区：[1]第二炮兵工程大学,陕西西安710025

出　　处：《电气传动》2013年第8期44-48,共5页Electric Drive

摘　　要：提出了一种nl±m次谐波补偿重复控制,以增强重复控制对谐波补偿的选择性。在传统重复控制的基础上对内模加以改进,使得重复控制仅对nl±m次谐波进行补偿,从而无需在实际系统中进行不必要的谐波补偿。该重复控制可以针对不同场合的需求给n和m赋以不同的数值,从而实现对特定谐波的高精度补偿。与传统的重复控制相比,该重复控制具有占用内存数目更少,动态响应更快,误差收敛时间更短的优点,并且提供了一种通用的表达式。最后,将该谐波补偿重复控制应用于单相PWM逆变器的波形控制中,通过仿真实验证明了其正确性和有效性。A repetitive control for nl±m order harmonic compensation was presented,which can highly enhance the selectivity of repetititve control in harmonic compensation.The internal model is improved aiming at compensating only the nl ±m order harmonic,thereby reducing the possibility of compensating unnecessary harmonic into the system.The proposed repetitive control scheme can achieve low steady-state tracking error for particular harmonic when n and m is evaluated in different situation.Moreover,compared with conventional repetitive contol（CRC）,it occupies less data memory,offers faster convergence rate and provides a universal formula for different repetitive controllers.An example of single-phase PWM inverter was provided to demonstrate the correctness and effectiveness of the proposed repetitive control.

关 键 词：电力电子 内模原理 重复控制 谐波补偿 PWM逆变器 

分 类 号：TM464[电气工程—电器]