通信电源技术
通信電源技術
통신전원기술
TELECOM POWER TECHNOLOGIES
2014年
3期
17-19
,共3页
三相PWM整流器%重复控制%周期性干扰
三相PWM整流器%重複控製%週期性榦擾
삼상PWM정류기%중복공제%주기성간우
three-phase PWM rectifier%repetitive control%periodic interference
针对PI控制存在的对周期性扰动抑制能力差的问题,提出了在 PI控制的三相 PWM整流器三闭环控制系统中引入重复控制的方法。通过将原有PI控制与重复控制相结合,不仅提高系统的稳态精度,同时兼顾了三相 PWM整流器的动态性能,有效地抑制了周期性干扰对输入电流和直流母线的影响。详细介绍了三相 PWM整流器的 PI 控制与重复控制结合的控制方法,并通过仿真验证了改进后系统的稳态特性有较大的提升。
針對PI控製存在的對週期性擾動抑製能力差的問題,提齣瞭在 PI控製的三相 PWM整流器三閉環控製繫統中引入重複控製的方法。通過將原有PI控製與重複控製相結閤,不僅提高繫統的穩態精度,同時兼顧瞭三相 PWM整流器的動態性能,有效地抑製瞭週期性榦擾對輸入電流和直流母線的影響。詳細介紹瞭三相 PWM整流器的 PI 控製與重複控製結閤的控製方法,併通過倣真驗證瞭改進後繫統的穩態特性有較大的提升。
침대PI공제존재적대주기성우동억제능력차적문제,제출료재 PI공제적삼상 PWM정류기삼폐배공제계통중인입중복공제적방법。통과장원유PI공제여중복공제상결합,불부제고계통적은태정도,동시겸고료삼상 PWM정류기적동태성능,유효지억제료주기성간우대수입전류화직류모선적영향。상세개소료삼상 PWM정류기적 PI 공제여중복공제결합적공제방법,병통과방진험증료개진후계통적은태특성유교대적제승。
According to the problem that PI control method can hardly restrain the periodic interference,repetitive control method have been introduced to the control of three-phase PWM rectifier.Through the combination of the PI con-trol method and the repetitive control method,not only the stable precision of the system can be improve,but also the dy-namic performance can be balanced.The method can effectively restrain the effect of the periodic interference to the input current and DC voltage.The paper introduces the method of the combination of the PI control method and the repetitive control method in detail,and the improvement of steady-state performance of the system have been verified by the simula-tion.