基于线性自抗扰的超级电容储能变换器控制  

Control of Supercapacitor Energy Storage Converter Based on Linear Active Disturbance Rejection

作　　者：刘科君 董建园[1] LIU Ke-jun;DONG Jian-yuan(College of Mechanical and Electrical Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China)

机构地区：[1]西安建筑科技大学机电工程学院,陕西西安710055

出　　处：《控制工程》2023年第2期316-323,共8页Control Engineering of China

摘　　要：针对超级电容储能系统应用于间歇性大功率场合外部扰动的随机性和非线性问题,通过分析超级电容储能系统结构和工作原理,基于超级电容器和三相交错并联双向直流变换器的工作特性分析和数学模型,提出了一种电压外环线性自抗扰控制(linear active disturbance rejection control, LADRC),电流内环PI移相均流控制的超级电容储能变换器控制方法,论述了线性自抗扰控制所需的参数整定过程,并在MATLAB/Simulink中进行仿真验证。结果表明,在直流母线电压与负载扰动的情况下,上述改进控制方法较PI控制可有效抑制直流母线电压波动,改善超级电容储能系统的动态响应速度和抗干扰能力。Aiming at the randomness and nonlinearity of external disturbances when the supercapacitor energy storage system is used in intermittent high-power applications, this paper proposes a control method that PI shifting phase and sharing current control in the current inner loop and linear active disturbance rejection control(LADRC)in the voltage outer loop through the analysis of the supercapacitor energy storage system structure and working principle, and based on the operating characteristics analysis and mathematical model of the supercapacitor and three-phase interleaved parallel bidirectional DC converter. The parameter tuning process required by linear active disturbance rejection control is discussed, and the process is verified by simulation in MATLAB/Simulink. The results show that as the DC bus voltage and load disturb, the above improved control method can suppress the DC bus voltage fluctuation compared with PI control effectively, the dynamic response speed and anti-interference ability of the supercapacitor energy storage system both are improved.

关 键 词：超级电容 储能变换器 线性自抗扰控制 移相均流 

分 类 号：TM46[电气工程—电器]