摘要
针对三电平脉宽调制(PWM)整流器直流侧两电容电压不平衡问题,提出了基于中点电荷预估控制的电压平衡控制算法。建立了电网电压定向下三电平PWM整流器在d,q坐标系下的数学模型,推导了平衡因子的精确计算方程,搭建了基于数字信号处理器(DSP)的实验平台并进行实验,实验结果验证了该方法的有效性。
A neutral-point potential control strategy based on neutral-point charge forecast control is proposed to realize the neutral-point potential balance of three-level pulse width modulation （PWM） rectifier.This paper firstly establishes the mathematic model of three-level PWM rectifier in d,q coordinates based on grid voltage orientation.The balance factor accurate calculation equation is deduced then.Finally the digital signal processor（DSP） experimental platform is established and the strategy is studied based on the platform.The experimental results verify the validity of the method.
出处
《电力电子技术》
CSCD
北大核心
2014年第6期68-70,共3页
Power Electronics
基金
江苏省自然科学基金(SBK201342842)~~
关键词
整流器
三电平
脉宽调制
rectifier
three-level
pulse width modulation
