三电平PWM整流器双闭环控制系统的研究  

Research on Dual Close-loop Control of Three-level PWM Rectifier

作　　者：冯丽超[1] 李永东[1] 王琛琛[1] 饶建业[1] 

机构地区：[1]清华大学,北京100084

出　　处：《电力电子技术》2008年第8期52-54,共3页Power Electronics

摘　　要：在三电平PWM整流器数学建模的基础上,通过电流电压的双闭环控制,达到了有功无功解耦控制的效果,实现了网侧单位功率因数。针对三电平变换器中直流母线电容电压平衡问题,给出了解决方案。实验结果验证了该控制方案的可行性,可有效保持直流母线电压的稳定,使其具有电流谐波含量低、动态响应性能好、抗干扰能力强等优点,具有很强的实用性。The paper implements a dual close-loop control based on the three-level PWM rectifier mathematical model.By means of this method,the active and reactive power can be decoupled and unity power factor can be achieved,and the solution of neutral-point voltage unbalance is also presented.Finally.the experimental results validate the feasibility of the control,which can achieve steady DC voltage ,fast response and low load change sensitivity to disturbance.

关 键 词：整流器 脉宽调制/双闭环控制 中点电压平衡 单位功率因数 

分 类 号：TM46[电气工程—电器]