摘要
以单相电压型PWM整流器为研究对象,针对其控制策略和控制性能不佳等问题,提出由无源电流控制器控制的单相电压型PWM整流器无源控制算法。首先,构建虚拟d-q坐标系获得整流器输入电流的d-q轴电流分量;其次,通过无源电流控制器消除或抑制输入电流谐波,实现对d-q轴电流分量的无差跟踪,使得整流器输出恒定的直流电压;最后,引入评价函数,对控制器的开关函数进行最优选取,从而选择最优开关状态。仿真和实验结果表明,该方法较传统的PI控制算法具有更高的准确性和有效性。
A passivity based control algorithm is presented for single-phase voltage PWM rectifier which haspoor control strategy and performance and other issues. Firstly, the virtual d-q coordinate system was constructedto obtain the d-q axis current component of the rectifier input current so that the input current harmonicscan be eliminated or suppressed through the passive current controller. Then, the no-error following of d-q axiscurrent component could be achieved and the rectifier outputed a constant DC voltage. Finally, the evaluationfunction was introduced to optimize the switching function of the controller, so as to select the optimal switchingstate. Simulation and experimental results show that this method is more accurate and effective than the traditionalPI control algorithm.
作者
张智俊
ZHANG Zhi-jun(School of Electrical and Information Engineering, Anhui University of Science ＆ Technology, Huainan 232001, China)
出处
《测控技术》
CSCD
2018年第2期147-150,156,共5页
Measurement & Control Technology
基金
国家自然科学基金资助项目(61170060)
安徽省学术和技术带头人及后备人选学术科研活动资助项目(2015D046)
安徽省教育厅高校优秀拔尖人才培育资助项目(gxbjZD2016044)
关键词
单相电压型PWM整流器
无源电流控制算法W-g轴电流
无差跟踪
评价函数
single-phase voltage source PWM rectifiers
passivity current control algorithm
d-q coordinate current
no-error following
evaluation function
