基于QPR与TD-FUZZY-PI双闭环单相PWM负载控制策略研究  

Study on Control Strategy of Single-phase PWM Load Based on Double Closed-loop of QPR and TD-FUZZY-PI Controller

作　　者：李炜[1,2] 张亚玲[1,2] 朱洁[3] 毛海杰[1,2] 

机构地区：[1]兰州理工大学电气工程与信息工程学院,兰州730050 [2]甘肃省工业过程先进控制重点实验室,兰州730050 [3]中国电建集团西北勘测设计研究院有限公司,西安710065

出　　处：《微电机》2015年第11期47-51,共5页Micromotors

摘　　要：针对PWM整流电路中晶闸管器件的特点及系统参数随环境的摄动造成直流电压输出不理想的问题,提出了新的双闭环控制策略,即电压外环采用跟踪-微分器+参数自整定模糊PI(TD-FUZZY-PI)控制,电流内环采用准比例谐振(QPR)控制,并对所用控制策略进行了仿真分析。仿真结果表明:文中方法较传统双闭环PI控制不仅过渡过程具有良好的动、静态特性,波形质量明显得到改善;而且电流内环实现了正弦量幅值和相位的无静差调节,提高了功率因数。According to the characteristics of the thyristor devices of PWM rectifier circuit and system parameters perturbation with the environment DC voltage output is not ideal. This paper presented a new double closed-loop control strategy. Under the mode of voltage and current double closed-loop control structure, the voltage loop adopted tracking differentiator ＋ parameters self-tuning fuzzy PI （TD-FUZZY-PI） control, current inner loop used quasi proportional resonant （QPR） control, and the control strategy was used for simulation analysis. The simulation results show that not only transition process has good dynamic and static characteristics, the waveform quality was improved obviously, but also the astatic adjustment of amplitude and phase sinusoidal in the current inner loop is achieved, improving the power factor under the control of the proposed method compared with traditional double closed-loop PI.

关 键 词：单相PWM整流电路 跟踪-微分器+自适应模糊PI控制器 准比例谐振控制器 控制策略 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]