摘要
为改善小型风电并网逆变器的动态性能,针对传统PI控制的缺点,结合小型风力发电并网逆变器的数学模型,将滑模变结构控制应用到小型风电单相并网逆变器控制中。为有效削弱滑模控制的抖振问题,对指数趋近率进行了优化处理,推导了优化滑模控制在小型风电并网逆变器中的存在性及稳定性,改进后的控制提高了控制系统的稳定性和动态特性。最后搭建了仿真和实验平台,给出了仿真和实验结果。
In order to improve the dynamic characteristics and overcome the disadvantages of traditional PI control, combining with the mathematical model of small-scale wind power grid-connected inverter, the sliding mode variable structure control is used in grid-connected inverter.In order to solve the chattering problem,the exponential reaching law is optimized, the existence and stability of wind power grid-connected inverter with variable structure sliding mode control is deduced and the stability and dynamic characteristics of control system are improved.At last, the simulation model and experimental platform are built and the results are given.
出处
《电力电子技术》
CSCD
北大核心
2012年第5期34-35,65,共3页
Power Electronics
关键词
逆变器
风电
滑模变结构控制
inverter
wind power
sliding mode variable structure control
