电测与仪表
電測與儀錶
전측여의표
ELECTRICAL MEASUREMENT & INSTRUMENTATION
2013年
10期
119-123
,共5页
PWM逆变器%交流电流调节器%内模解耦%仿真
PWM逆變器%交流電流調節器%內模解耦%倣真
PWM역변기%교류전류조절기%내모해우%방진
PWM converter%AC regulator%IMC decoupling%simulation
基于电压型PWM逆变器电压电流双闭环控制框架,针对电流环的交叉耦合问题,采用内模解耦(IMC)方法以提高PWM逆变器动态过程中的解耦效果。除此以外,设计了交流电流调节器,其补偿信号与直流电流调节器的校正信号相加共同产生控制量的输出,以降低直流侧电压的波动性。给出了整体改进方案的Simulink仿真波形,结果证明了改进方案的可行性和有效性。
基于電壓型PWM逆變器電壓電流雙閉環控製框架,針對電流環的交扠耦閤問題,採用內模解耦(IMC)方法以提高PWM逆變器動態過程中的解耦效果。除此以外,設計瞭交流電流調節器,其補償信號與直流電流調節器的校正信號相加共同產生控製量的輸齣,以降低直流側電壓的波動性。給齣瞭整體改進方案的Simulink倣真波形,結果證明瞭改進方案的可行性和有效性。
기우전압형PWM역변기전압전류쌍폐배공제광가,침대전류배적교차우합문제,채용내모해우(IMC)방법이제고PWM역변기동태과정중적해우효과。제차이외,설계료교류전류조절기,기보상신호여직류전류조절기적교정신호상가공동산생공제량적수출,이강저직류측전압적파동성。급출료정체개진방안적Simulink방진파형,결과증명료개진방안적가행성화유효성。
For the purpose of enhancing PWM inverter’s dynamic decoupling effects in current control loop, this paper apply IMC method to PWM inverter which is based on double (voltage and current) close-loop control. In addition, a kind of AC current regulator is designed, and its compensation signal as well as DC correction signal are together to determine the output of control, which reduces fluctuations at the DC side. In this paper, the waveforms via Simulink of the advanced scheme are presented, and the simulation results confirm the validity of the mentioned strategy.