摘要
在电感电流连续导通的模式下,提出一种基于反步法的并联Buck变换器的均流控制方法。该方法在并联Buck变换器状态方程的基础上,引入一个表示电感电流间误差积分的状态量,然后拓展状态向量,得到拓展后的状态方程,针对该状态方程,根据反步法的原理,设计了并联Buck变换器的反步均流控制律。仿真结果表明,反步均流控制可以实现良好的均流效果,与自主均流控制相比,具有更强的鲁棒性。
A current sharing control method of paralleled Buck converter was proposed based on backstepping method in continuous conduction mode of inductor current. On the basis of state equation of paralleled Buck converter, a state which expressed the integration of error between inductor currents was introduced, the state vector was expanded,and then the expanded state equation was obtained. For the proposed state equation, according to the principle of backstepping method, the backstepping current sharing control law of paralleled Buck converter was designed. The simulation results show that the backstepping current sharing control can achieve good current sharing effect and has stronger robustness than the automatic current sharing control.
出处
《电源技术》
CAS
CSCD
北大核心
2009年第12期1114-1116,1126,共4页
Chinese Journal of Power Sources
关键词
并联Buck变换器
连续导通模式
反步法
反步均流控制
自主均流控制
鲁棒性
paralleled Buck converter continuous conduction mode backstepping method backstepping current sharing control automatic current sharing control robustness
