基于改进协同控制的双向直流变换器控制策略研究  

Research on control strategy of bidirectional DC-DC converter based on improved synergetic control

作　　者：刘庆雪 陈恺 LIU Qingxue;CHEN Kai(Technical College,Qufu Normal University,Rizhao 276827,China;Beiqi Foton Motor Co.,Ltd.,Weifang 261000,China)

机构地区：[1]曲阜师范大学工学院,山东日照276827 [2]北汽福田汽车股份有限公司,山东潍坊261000

出　　处：《电气应用》2023年第12期89-97,共9页Electrotechnical Application

摘　　要：针对燃料电池/锂电池/超级电容混合动力汽车用变换器控制,提出一种基于固定时间干扰观测器的改进协同控制策略,以实现锂电池电流的跟踪,确保直流母线电压的稳定性、鲁棒性及抗干扰性能。首先,根据非隔离变换器的拓扑电路推导出变换器的数学模型并进行参数选择,为后面的协同控制算法分析建立基础。其次,引入了协同控制算法对变换器的IGBT进行占空比控制。然后,基于变换器系统总干扰引入了固定时间干扰观测器并对宏进行改进以获得更好的控制效果。最后,在MATLAB/Simulink环境下搭建了燃料电池汽车整车模型,选取国际标准工况在整体系统中进行了仿真实验验证,通过与其他算法对比验证了所提控制策略的有效性。An improved synergetic control strategy based on fixed time disturbance observer is proposed for the control of fuel cell/battery/ultracapacitor hybrid electric vehicle converter to track battery current,DC bus voltage stability,robust performance and anti-jamming performance.Firstly,the mathematical model of the converter is derived from the topology of the non-isolated converter and the parameters are selected,which is the basis for the analysis of the synergetic control algorithm.Secondly,a synergetic control algorithm is introduced to control the duty cycle of IGBT.Then,a fixed-time disturbance observer is introduced based on the total disturbance of the converter system and macros are improved to obtain better control effect.Finally,in Matlab/Simulink environment,built a fuel cell vehicle model,selected the international standard operating conditions in the overall system for simulation experiments,the effectiveness of the proposed control strategy is verified by comparing with other algorithms.

关 键 词：氢燃料电池 锂电池 双向变换器 协同控制 固定时间干扰观测器 

分 类 号：TM46[电气工程—电器]