摘要
基于三相PWM整流器数学模型,根据滑模变结构控制(Sliding Mode Variable Structure Control,简称SMVSC)理论设计出了双闭环控制系统,并运用空间矢量算法实现算法的控制输出,整个系统实现了三相功率因数校正和输出电压调节双重功能。对该系统进行了理论分析和关键参数设计,并在Matlab上进行了仿真。仿真结果表明,应用SMVSC理论控制三相空间矢量脉宽调制(SVPWM)整流器不仅易于设计和实现,而且具有较好的鲁棒性和动态性能。最后设计了一台10 kW的样机,用TMS320F2812实现了整个控制过程。实验证明输出电压控制稳定,而且得到了满意的功率因数校正结果。
On the basis of the mathematical model of 3-phase PWM rectifiers, a control system with double close-loops is designed based on sliding mode variable structure control （SMVSC）.The arithmetic output is educed by using the space vector pulse width modulation（SVPWM）.The power factor correction（PFC） and the output voltage modulation are simultaneously achieved by using this system.Its operation principle,key parameter calculation and computer simulation on Matlab are presented.The simulative results show that SMVSC for three-phase SVPWM rectifier is simple and efficient, and is of the better robust and dynamics.A 10 kW prototype is designed.The whole control process is carried out with TMS320F2812.Experiment shows the output voltage is controlled stably and a satisfied PFC result is got.
出处
《电力电子技术》
CSCD
北大核心
2009年第7期78-80,共3页
Power Electronics
关键词
整流器
算法
滑模变结构
空间矢量
rectifier
algorithm / sliding-mode variable structure
space vector
