摘要
建立了同步旋转坐标系下的三相电压型脉宽调制(PWM)整流器的非线性数学模型,针对常规的控制策略动态性能较差的特点,提出一种该坐标系下的电压外环滑模控制算法,电流内环采用状态反馈精确线性化控制策略。进而给出了整流器的硬件设计,实验结果表明样机输入电流正弦,直流电压稳定,功率因数高,且具有良好的动、静态性能,验证了该控制策略的正确性和有效性。
A nonlinear mathematical model of three-phase voltage source pulse width modulation（PWM） rectifier is established in the rotating frame.Aiming at the poor dynamic performance of conventional control strategies,a slidingmode control algorithm on rotating frame for the out voltage loop is proposed,and a feedback linearization control algorithm for the current loop is proposed.The experimental platform results show that the PWM rectifier has sinusoidal input curent,stable direct current voltage and high power factor.In addition,the system has good dynamic and static performance,and the correctness and effectiveness of the control strategy are verified.
出处
《电力电子技术》
CSCD
北大核心
2014年第11期66-67,72,共3页
Power Electronics
关键词
整流器
脉宽调制
滑模控制
反馈线性化
rectifier
pulse width modulation
sliding-mode control
feedback linearization
