摘要
对BUCK变换器带恒功率负载系统的非线性控制进行了研究.根据恒功率负载的非线性特性,推导出BUCK变换器带恒功率负载的精确线性化反馈控制规律,设计了系统非线性控制器.用SABER软件对控制律进行了仿真,结果表明反馈精确线性化技术可以实现对BUCK变换器带恒功率负载的控制,在电源及负载大范围变化时,保证系统的稳定运行,具有大信号稳定特性.
The nonlinear control of a BUCK converter with constant power loads is studied. According to the nonlinear characteristic of constant power loads, a nonlinear stabilizing controller based on exact feedback linearization technique is proposed. The SABER is used to simulate the control law. The simulation results show that exact feedback linearization technique can be used to control a DC/DC converter supplying constant power loads. During large disturbances in the power supply and the loads, the nonlinear controller can make the system operation steadily, and has a large-signal stability characteristic.
出处
《控制与决策》
EI
CSCD
北大核心
2009年第7期1117-1120,共4页
Control and Decision
基金
航空基金项目(2007ZC53038)
