RLS算法在碳基超级电容器参数辨识中的应用
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摘要
为改善传统碳基超级电容器模型不能同时兼顾简易性和精确性的缺点,提出一种解决碳基超级电容器模型参数辨识问题的新方法.构建一种能充分描述超级电容工作特性的参数辨识电路模型,采用带遗忘因子的最小二乘法(RLS)对电路参数进行辨识,并通过恒流充电实验方法及仿真研究对充电过程的电压和电流进行测量和比较.研究结果表明:该电路模型能克服传统最小二乘法易出现数据饱和的缺点,得到更为精确的模型辨识参数.
In order to improve the disadvantage that traditional carbon-supercapacitor can not obtain simplification and accuracy simultaneously, a new method is put forward to solve the problems of parameter identification in the circuit model of carbon-supercapacitor. A kind of circuit model which can adequatelydescribe the work characteristic of the supercapacitor is established, and recursive least squares algorithm with forgetting factor is used in identifying the circuit parameters to finish the process of parameter identification. The actual current and voltage in the charging process are measured and compared through constant current charging experiments and simulating methods. The results of experiments and simulation show that this circuit can overcome the defect of data saturation in traditional Recursive Least-squares algorithm and obtain more accurate model identification parameters.
In order to improve the disadvantage that traditional carbon-supercapacitor can not obtain simplification and accuracy simultaneously, a new method is put forward to solve the problems of parameter identification in the circuit model of carbon-supercapacitor. A kind of circuit model which can adequatelydescribe the work characteristic of the supercapacitor is established, and recursive least squares algorithm with forgetting factor is used in identifying the circuit parameters to finish the process of parameter identification. The actual current and voltage in the charging process are measured and compared through constant current charging experiments and simulating methods. The results of experiments and simulation show that this circuit can overcome the defect of data saturation in traditional Recursive Least-squares algorithm and obtain more accurate model identification parameters.
引文
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[3]程立文,汪继强,谭玲生.超级电容器的技术与应用市场发展简评[J].电源技术,2007(11):921-925.Cheng Liwen,Wang Jiqiang,Tan Lingsheng.Brief overview on recent technology&market progress of supercapacitors[J].Journal of Power Sources,2007(11):921-925.
[4]Li Chensha,Wang Dazhi,Liang Tongxiang,et al.A study of activated carbon nanotubes as double-layer capacitors electrode materials[J].Materials Letters,2004(58):3 774-3 777.
[5]Pandolfo A G,Hollenkamp A F.Carbon properties and their role in supercapacitors[J].Power Source,2006(157):11-27.
[6]Conway B E.Electrochemical Supercapacitors[M].New York:Kluwer Academic Publishers/Plenum Press,1999:335-452.
[7]Conway B E.电化学超级电容器—科学原理及技术应用[M].陈艾.北京:化学工业出版社,2005.Conway B E.Electrochemical Supercapacitors Scientific Fundamentals and Technological Applications[M].Chen Ai.Beijing:Chemical Industry Press,2005.
[8]Itagaki M,Suzuki S,Shitanda I,et al.Impedance analysis on electric double layer capacitor with transmission line model[J].Journal of Power Sources,2007,164(1):415-424.
[9]陈涵,刘会金,李大路,等.可变遗忘因子递推最小二乘法对时变参数测量[J].高压电技术,2008,34(7):1 474-1 477.Chen Han,Liu Huijin,Li Dalu,et al.Time-varying parameters measurement by least square method with variable forgetting factors[J].High Voltage Engineering,2008,34(7):1 474-1 477.
[10]杨华,李少远.一种新的具有遗忘因子的递推子空间辨识算法[J].控制理论与应用,2009,26(1):69-72.Yang Hua,Li Shaoyuan.A novel recursive moesp subspace identification algorithm based on forgetting factor[J].Control Theory&Applications,2009,26(1):69-72.
[2]李韶杰.超级电容器蓄电池混合电源性能研究[J].电源技术,2010,6(34):567-571.Li Shaojie.Study on properties of ultracapacitor-battery hybrid power supply[J].Journal of Power Sources,2010,6(34):567-571.
[3]程立文,汪继强,谭玲生.超级电容器的技术与应用市场发展简评[J].电源技术,2007(11):921-925.Cheng Liwen,Wang Jiqiang,Tan Lingsheng.Brief overview on recent technology&market progress of supercapacitors[J].Journal of Power Sources,2007(11):921-925.
[4]Li Chensha,Wang Dazhi,Liang Tongxiang,et al.A study of activated carbon nanotubes as double-layer capacitors electrode materials[J].Materials Letters,2004(58):3 774-3 777.
[5]Pandolfo A G,Hollenkamp A F.Carbon properties and their role in supercapacitors[J].Power Source,2006(157):11-27.
[6]Conway B E.Electrochemical Supercapacitors[M].New York:Kluwer Academic Publishers/Plenum Press,1999:335-452.
[7]Conway B E.电化学超级电容器—科学原理及技术应用[M].陈艾.北京:化学工业出版社,2005.Conway B E.Electrochemical Supercapacitors Scientific Fundamentals and Technological Applications[M].Chen Ai.Beijing:Chemical Industry Press,2005.
[8]Itagaki M,Suzuki S,Shitanda I,et al.Impedance analysis on electric double layer capacitor with transmission line model[J].Journal of Power Sources,2007,164(1):415-424.
[9]陈涵,刘会金,李大路,等.可变遗忘因子递推最小二乘法对时变参数测量[J].高压电技术,2008,34(7):1 474-1 477.Chen Han,Liu Huijin,Li Dalu,et al.Time-varying parameters measurement by least square method with variable forgetting factors[J].High Voltage Engineering,2008,34(7):1 474-1 477.
[10]杨华,李少远.一种新的具有遗忘因子的递推子空间辨识算法[J].控制理论与应用,2009,26(1):69-72.Yang Hua,Li Shaoyuan.A novel recursive moesp subspace identification algorithm based on forgetting factor[J].Control Theory&Applications,2009,26(1):69-72.