摘要
针对磁悬浮姿控储能两用飞轮能量转换系统负载变化引起的输出电压波动问题,提出一种用于并联DC-DC Buck变换器拓扑结构的PI协同控制方法,该方法的电感电流内环采用协同控制器,其电流参考值来源于电压控制器输出均值。输出电压外环采用PI控制器,克服了基本协同控制方法对负载变化适应性和鲁棒性差的不足。仿真和试验结果表明,在负载突变和大范围变化的情况下,系统输出电压稳定、纹波小、鲁棒性好。
In order to solve the output voltage ripple problem caused by load variation of magnetic suspended attitude control and energy storage flywheel (ACESFW) energy conversion system, a PI synergetic control method for the parallel DC-DC Buck converter is presented in this paper. The method applies two synergetic controllers in current loop, each controller obtaining current reference from average value of output of PI voltage controller which overcomes shortcomings such as poor adaptability and robustness of basic synergetic control method. Simulation and experimental results show that the presented method has highly stable output voltage, small ripple and perfect robustness.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2009年第5期1907-1912,共6页
Journal of Astronautics
关键词
磁悬浮姿控储能两用飞轮
能量转换
并联DC—DC
BUCK变换器
PI协同控制
Magnetic suspended attitude control and energy storage flywheel
Energy conversion
Parallel DC-DC Buck converter
PI synergetic control