摘要
针对电网传输电力逆变器传输电能中,输出的电压稳定性较差及抗扰能力弱问题,提出了一种分数阶的逆变器稳定性滑模控制方法,在传统的滑模控制中引入分数阶微分,借助分数阶微分减缓系统能量的传递,减小负载切换时的输出波动。运用逆系统方法将原系统数学模型线性化,简化了设计过程,设计了分数阶终端滑模控制器,增强系统动态响应,并证明了系统稳定性。仿真结果表明,设计的逆变器分数阶稳定性滑模控制系统的响应速度明显提高,输出电压波动变小,系统抗扰性能得到增强。
Focusing on the problem of the poor stability and weak resistance to disturbance of electricity grid transmission power inverter when transmission the power. A fractional differential stable sliding mode control method was proposed. Fractional differential was introduced in the traditional integer order sliding mode control to reduce the load fluctuations according to the property of Fractional differential about slowing down the transfer of system energy. Linearized the original system model using inverse system method, which simplified the design process. Then designed fractional terminal sliding mode controller and proved system＇s stability. The simulation results show that the responding speed and resistance to disturbance of the fractional differential stable sliding mode control system are improved obviously. The output voltage has better smoothing feature.
出处
《计算机仿真》
北大核心
2017年第2期180-184,共5页
Computer Simulation
基金
陕西省科技厅项目(2012K09-13)
关键词
逆变器
分数阶
逆系统
终端滑模
Inverter
Fractional order
Inverse system
Terminal sliding mode
