摘要
为改善DC/DC升压变换器的控制性能 ,设计了一种串级结构的控制器。控制器的外环采用PI控制算法 ,以电容电压为被控量 ;内环则采用积分增益可调的PI控制算法 ,以电感电流为被控量。该种结构的控制器不但有效解决了系统非最小相位特性给控制器设计带来的难题 ,而且可使被控系统获得良好的动态特性 ,并对系统参数变化有着很强的鲁棒性。对DC/DC升压变换器的仿真结果表明 。
In order to improve the control performance of DC/DC boost converters, a cascade controller is adopted. The outer loop of the cascade controller adopts conventional PI control algorithm and takes the capacitor voltage as the controlled variable; the inner one adopts self tuning PI control algorithm and takes the inductor current as the controlled variable. This kind of controller not only can overcome the difficulties resulted from the non minimum phase property of DC/DC boost converters, but also can make the controlled system achieve excellent dynamic characteristics, and have strong robustness to the variations of system parameters. Simulation results of a certain DC/DC boost converter indicate that the controller presented above is feasible.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2002年第1期110-115,共6页
Proceedings of the CSEE
