摘要
介绍了三相高功率因数PWM整流器电流环和电压环的设计,设计了双模控制策略,即将PI调节与模糊控制相结合组成双模控制器,在大偏差范围内使系统具有较快的动态响应,在小偏差范围内采用PI调节,使系统达到无静差,提高了直流侧电压的控制精度。仿真和实验结果表明,这种新型控制方法响应快、鲁棒性强、抗干扰能力好,较传统PI控制具有更好的动、静态特性。
The design of the voltage loop and current loop of three-phase high power factor PWM rectifier was introduced, the strategy of dual-mode control that combines fuzzy control to PI regulator was proposed, which uses fuzzy controller to obtain quick dynamic response when deviation is in small range and adopts PI regulator to realize no static error when deviation is in long range, improving the control accuracy of direct current voltage. The simulation and experimental results show that the performance of the improved method is superior to the traditional PI controller, it has high dynamic and static performance because of its advantage in quick response and good robustness.
出处
《机床与液压》
北大核心
2009年第8期362-364,349,共4页
Machine Tool & Hydraulics
基金
河南省重点攻关项目(082102240008)
河南省教育厅自然科学研究计划项目(2009B440008)
