基于虚拟磁链的三电平整流器MPDPC研究  

Study of MPDPC for Three-level Rectifier Based on Virtual Flux

作　　者：吴轩钦[1] 王从刚[1] 王凯 刘海宁 

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]徐州中矿大传动与自动化有限公司,江苏徐州221116

出　　处：《电力电子技术》2013年第9期14-15,22,共3页Power Electronics

摘　　要：为实现无网侧电压传感器控制同时提高系统控制性能,对中点箝位型三电平整流器基于虚拟磁链的模型预测直接功率控制(MPDPC)进行了研究。MPDPC策略利用系统数学模型,对三电平整流器27种电压矢量对应的未来电流和功率等值进行预测,并建立目标函数,通过滚动优化选取控制整流器所需的开关状态。在对功率进行预测时,引入虚拟磁链技术,从而无需测量网侧电压值,实现无网侧电压传感器控制,节约了成本。最后搭建了以DSP和FPGA为控制器的三电平整流器实验平台,通过实验验证了该策略的有效性。Model predictive direct power control（MPDPC） for three-level rectifier based on virtual flux is studied, aiming at controlling the grid voltage sensors and improving the system control performance.The mathematical model of three-level rectifier is applied into predict the value of the grid current and power for all the possible 27 voltage vectors.The objective function is established and then the optimal switching state is selected by rolling optimization.The virtual flux technique is introduced to the control strategy to predict the power without grid voltage sensors which saves costs.Finally, a three-level rectifier experimental platform with the controllers of DSP and FPGA is buih.The effectiveness of this control scheme is verified through experiments.

关 键 词：整流器 直接功率控制 模型预测 

分 类 号：TM461[电气工程—电器]