电压型PWM逆变器控制技术的改进  

The Improvement of Control Technology for Voltage Source PWM Inverter

作　　者：李雪龙[1] 周渊深[2] 李少鹏[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏徐州221116 [2]淮海工学院电子工程学院,江苏连云港222005

出　　处：《电测与仪表》2013年第10期119-123,共5页Electrical Measurement & Instrumentation

摘　　要：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。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.

关 键 词：PWM逆变器 交流电流调节器 内模解耦 仿真 

分 类 号：TM464[电气工程—电器]