无源自适应控制Buck-Boost变换器研究  

Research on the Buck-Boost Converter Adopting a Passivity-based Adaptive Control Strategy

作　　者：王丙元[1] 冯辉[1] 

机构地区：[1]中国民航大学,地面特种设备研究基地,天津300300

出　　处：《电力电子技术》2012年第11期32-35,共4页Power Electronics

基　　金：天津市科技发展计划基金项目(06YFGZGX00800)~~

摘　　要：为获得良好的动、静态性能,在Buck-Boost变换器状态空间平均模型基础上,设计了系统无源控制器,它具有系统响应速度快,输出纹波小的特点,但当输入电源电压出现大幅扰动时,稳态输出存在偏差。针对此问题,提出一种无源自适应控制策略。对采用无源自适应控制策略的Buck-Boost变换器进行仿真,并在输入电压宽范围变化的助航灯光单灯回路上进行了实验,结果表明该变换器在满足静动态性能指标的同时,对宽输入电压扰动具有很强的鲁棒性。To obtain the good dynamic state and steady state performance, a passivity-based controller is developed on the basis of the state-space average model of a Buck-Boost converter.The Buck-Boost converter with the passivitybased controller has the fast response and small output ripple, but has difficulty in achieving the output voltage regulation to a desired constant level on the condition of the wide input voltage.Aiming at this problem,a passivity-based adaptive control strategy is presented.The Buck-Boost converter adopting the passivity-based adaptive control strategy is simulated and the experiment is carried on the airfield lighting power.The results show that the converter meets indexs of the dynamic state and steady state performance, and has a strong robustness to the disturbance of the wide input voltage.

关 键 词：变换器 非线性控制 无源性控制 自适应控制 

分 类 号：TM46[电气工程—电器]