摘要
简述了三相电压型PWM整流器的工作原理和控制系统的数学模型。为了提高控制性能,在整流器的电压环中采用一种新型的PI调节器,应用TMS320F2812建立了PWM整流器的数字控制平台,实验与仿真结果证明了变参数PI调节器有效地降低了系统的超调量,缩短了响应时间,提高了系统的鲁棒性,获得了稳定的直流输出电压且具有快速的动态响应,实现了近似单位功率因数。
The principle of three-phase voltage PWM rectifier and the mathematic model of controller are described.A variable parameters PI regulator is presented to improve the control performances in voltage loops.A digital control platform of PWM rectifier with TMS320F2812 is built.Results of simulation and experiment show that the variable arguments PI regulator can reduce overshoot and responding time, and improve the robustness of the system.The system can get steady DC voltage and fast dynamic response, and achieve unit power factor.
出处
《电力电子技术》
CSCD
北大核心
2012年第11期36-37,52,共3页
Power Electronics
关键词
整流器
变参数
比例积分调节器
rectifier
variable parameters
proportion-intergal regulator
