摘要
本文分析了正弦波PWM逆变器的实际应用情况和数字控制的特点,在建立了逆变器及其控制系统的状态空间模型基础之上,采用了一种带输出电流前馈的PI数字双环控制方案(电感电流内环电压外环),并对控制系统直接离散化后利用极点配置的方法设计了控制系统参数,最后给出了在各种实验条件下的仿真波形。仿真结果表明,该方案设计简单可行,并能很好地达到逆变电源的各项性能指标要求。
This paper analyzes the practical application of the sine wave PWM inverter as well as the feature of digital control,and a PI digital dual-loop control Strategy with output current feed-forward(inner loop is inductor current and outer loop is output voltage)is proposed based on the establishment of state-space model for the inverter and its control system.The parameters of control system are designed by pole assignment after direct discretization and the simulation waveform under various of conditions are ...
出处
《电源技术应用》
2008年第9期34-39,共6页
Power Supply Technologles and Applications
关键词
状态空间
双环控制
PI
极点配置
State-space
Dual-loop Control
PI
Pole Assignment
