Adaptive-PID Cascade Controller Design for DC/DC Buck-Boost PWM Power Converters
In order to improve the control performance of DC/DC buck-boost PWM converters, the control problem of the output voltage can be transformed to the inductor current control. Thus, a cascade control system is constituted when a cascade controller is adopted. The outer loop of the cascade system adopts an adaptive control algorithm with a parameter estimator and the capacitor voltage is treated as the controlled variable. The inner one adopts a special PID control algorithm and the inductor current is treated as the controlled variable. These two cascaded controllers not only can make the controlled system achieve excellent dynamic characteristics, but also have strong robustness to the variations of the system parameters, such as load resistance, capacitance, inductance, and input voltage. Simulation results demonstrate the effectiveness of the cascade controller.
Zhong Wu Wusheng Chou
School of Instrumentation Science Beijing University of Aeronautics and Astronautics Beijing 100083, Robotics Research Institute Beijing University of Aeronautics and Astronautics Beijing 100083, China
国际会议
青岛
英文
2006-07-21（万方平台首次上网日期，不代表论文的发表时间）