三电平PWM整流器模型预测直接功率控制研究  

Study of Model Predictive Direct Power Control for Three-level PWM Rectifier

作　　者：曹晓冬[1] 谭国俊[1] 李川 王从刚[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221008 [2]连云港民行站,江苏连云港222000

出　　处：《电力电子技术》2013年第7期25-27,共3页Power Electronics

基　　金：江苏省重大科技成果转化资金项目(BA2008029)~~

摘　　要：模型预测直接功率控制(MPDPC)应用在三电平PWM整流器中,具有动态响应快、无需旋转坐标变换和调制技术等特点。根据建立的三电平PWM整流器离散数学模型求出整流器网侧电流、中点电位偏差和功率的预测值。在此基础上列出控制功率和中点的目标函数,通过选择使目标函数最小的最优开关状态并将其输出,达到对有功功率、无功功率和中点电位的快速准确控制,实现三电平PWM整流器的单位功率因数、正弦网侧电流控制。最后,仿真和实验结果表明了该控制策略的正确性、有效性。Three-level PWM rectifier using model predictive direct power control （MPDPC） has the characteristics of fast dynamic response, no need of rotate coordinate transformation and modulators.Future values of currents, midpoint potential deviation and power are worked out according to the discrete mathematical model of the three-level PWM rectifier.The cost function of power and midpoint potential is given.The active power,reactive power and the midpoint potential are controlled lastly and accurately by selecting and appling the optimal switching state minimizes the cost function.Then unity power factor control and sinusoidal line-side current control is achieved.Finally,the correctness and effectiveness of such control strategies are verified through the simulation and experimental results.

关 键 词：整流器 三电平 模型预测 直接功率控制 

分 类 号：TM461[电气工程—电器]