基于预测控制的三相电压型逆变器并联系统  

Three-Phase Voltage Source Inverters Parallel System Based on Predictive Control

作　　者：沈坤[1] 章兢[1] 王坚[2] 

机构地区：[1]湖南大学电气与信息工程学院,长沙410082 [2]株洲南车时代电气股份有限公司技术中心,株洲412001

出　　处：《电工技术学报》2012年第12期63-70,共8页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(61174140)

摘　　要：研究了基于预测控制的三相电压型逆变器并联系统。采用开关周期平均建模法,在dq0旋转坐标系下建立了三相电压型逆变器并联系统的状态空间模型,并以此为基础构建了三相电压型逆变器并联控制系统的预测模型;选定并联系统输出电压与参考电压的差值及各逆变器输出电流之间的差值构建控制系统的优化性能指标,通过滚动优化操作,实现了三相电压型逆变器并联系统的预测控制。仿真及实验结果表明,所构建的基于预测控制的三相电压型逆变器并联系统能够在不同负载条件及逆变器投切等工况下实现系统输出电压的跟踪及负载电流的均分,同时也具有良好的鲁棒性及自适应性。The three-phase voltage source inverters parallel system based on predictive control is studied in this paper.The state-space model of three-phase voltage source inverters parallel system in dq0 frame is established by the means of switch period averaging modeling,Based on this,the predictive model of three-phase voltage source inverters parallel control system is built.The difference value between the three-phase voltage source inverters parallel system output voltage and the reference voltage as well as the difference value between each inverter＇s output current is selected to construct the system＇s optimize performance indexes.After the operation of rolling optimization,the three-phase voltage source inverters parallel system applied the method of predictive control is realized.The results of simulation and experiment verify that the designed three-phase voltage source inverters parallel system based on predictive control is operating normally under different load conditions or in the operation of plugging into or pulling out one inverter in the system.The system＇s output-voltage tracking and load-current sharing is achieved.In addition,the system shows good robustness and high adaptability.

关 键 词：预测控制 三相电压型逆变器 并联 热插拔 

分 类 号：TM464[电气工程—电器]