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.
出处
《电力电子技术》
CSCD
北大核心
2008年第8期52-54,共3页
Power Electronics
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
rectifier
pulse width modulation / dual close-loop control
neutral-point voltage balance
unity power factor
