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Boost变换器带恒功率负载状态反馈精确线性化与最优跟踪控制技术研究
引用本文:高朝晖,林辉,张晓斌.Boost变换器带恒功率负载状态反馈精确线性化与最优跟踪控制技术研究[J].中国电机工程学报,2007,27(13):70-75.
作者姓名:高朝晖  林辉  张晓斌
作者单位:西北工业大学自动化学院,陕西省,西安市,710072
摘    要:分析了Boost变换器带恒功率负载的特性,推导出系统传递函数并得到系统稳定运行条件。采用状态反馈精确线性化技术对系统进行控制。根据Boost变换器带恒功率负载的特点,将最优跟踪技术应用于精确线性化控制中,得到系统非线性控制律。用SABER软件对得到的控制律进行了仿真。仿真结果表明:精确反馈线性化结合最优跟踪可以对Boost变换器带恒功率负载系统进行有效的控制,使系统具有理想的稳态特性和动态响应,在电源及负载大范围变化时,保证系统的稳定运行,满足不同类型负载的要求,具有大信号稳定特性。

关 键 词:Boost变换器  恒功率负载  精确线性化  最优跟踪
文章编号:0258-8013(2007)13-0070-06
收稿时间:2006-12-29
修稿时间:2006年12月29

Exact Linearization and Optimal Tracking Control of Boost Converter With Constant Power Loads
GAO Zhao-hui,LIN Hui,ZHANG Xiao-bin.Exact Linearization and Optimal Tracking Control of Boost Converter With Constant Power Loads[J].Proceedings of the CSEE,2007,27(13):70-75.
Authors:GAO Zhao-hui  LIN Hui  ZHANG Xiao-bin
Abstract:The characteristics of boost converter with constant power loads are analyzed. Transfer function of the system is derived and the condition of stability is obtained. State variables feedback exact linearization is used to control the system. According to system characteristics of the system, optimal tracking control is applied to exact linearization and nonlinear control law is obtained. The SABER is used to simulate control law. Simulation results show that state variables feedback exact linearization and optimal tracking technique can be used to control boost converter supplying constant power loads, and make the system with good steady state characteristic and dynamic response. When large disturbances occur in power supply and loads, the nonlinear controller can make system operation steadily, meet with different kinds of loads, and have large-signal stability characteristic.
Keywords:boost converter  constant power loads  exactlinearization  optimal tracking
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