双闭环控制PWM变流器动态响应性能优化研究  

Optimal Study on the Dynamic Response Performance of Double Closed-Loop Control PWM Rectifier

作　　者：余成元[1] 李东东[1] 

机构地区：[1]上海电力学院,上海200090

出　　处：《电气开关》2013年第1期26-29,共4页Electric Switchgear

摘　　要：针对双馈风力发电机(DFIG)变流器直流母线电压稳定问题,给出了采用传统控制策略的变流器数学模型,并以此为基础提出了一种新型控制方法。即将直流母线电压变化率引入在线模糊修正PID参数的自整定控制策略中,同时在电流内环控制中加入了前馈补偿机制。最后,在MATLAB/Simulink中搭建了仿真模型,仿真结果表明采用新型控制方法的变流器比采用传统控制策略的变流器进一步改善了变流器直流母线电压的动态响应特性。Aiming at the DC bus voltage stabilization problem of the rectifier of the double - feed wind - driven genera- tor, a mathematical model of the rectifier adopted traditional control scheme is given. And put forward a new control method on the basis of this, that is to lead DC bus voltage changing rate into self - adjusting control scheme that is on - line fuzzy correction PID parameters. Meanuhile the feed forward compensation mechanism is added to internal control of current. Finally,a simulation model is built im MATLAB/Simulink. The simulation result shows that the rectifier adopted the new control method is fruther to improve dynaric response characteristic of the DC bus voltage of the rectifier than the traditional control scheme.

关 键 词：双闭环 模糊PI控制 动态响应 变流器 

分 类 号：TM933.4[电气工程—电力电子与电力传动]