摘要
介绍了三电平电压型PWM整流器的基本原理,采用了基于d,q轴的前馈解耦控制策略。运用负小矢量首发的空间矢量脉宽调制算法(SVPWM),给出了算法的具体实现过程。探讨了影响中点电位平衡的主要原因,提出了检测直流电容电压和中点电流调节正负小矢量作用时间的中点电位平衡策略。仿真和实验验证了所提控制策略和调制算法的有效性。
The three-level voltage source PWM rectifier principle is introduced, and the feed-forward decoupling con- trol strategy based on the d,q axis is used.Starting with negative small vector space vector pulse width modulation al- gorithm,the algorithm is given to realize the process specifically.Discussing the main reasons of influence neutral- point-potential, and the midpoint of the DC capacitor voltage and current regulation time of positive and negative role in the middle of a small vector potential balance strategy is put forward.The simulation and the experimental results verify the validity of control policy and the modulation algorithm.
出处
《电力电子技术》
CSCD
北大核心
2011年第11期70-72,共3页
Power Electronics
关键词
整流器
前馈解耦
空间矢量脉宽调制
中点电位平衡
rectifier
feed-forward decouple
space vector pulse width modulation
neutral-point-potential
