基于Kalman滤波技术的超高频变换器稳态特性分析  

Analysis of Steady-state Characteristics of VHF Converter Based on Kalman Filtering Technology

作　　者：江心怡 陈艳峰[1] JIANG Xinyi;CHEN Yanfeng(School of Electric Power Engineering,South China University of Technology,Guangzhou,Guangdong 510641,China)

机构地区：[1]华南理工大学电力学院,广东广州510641

出　　处：《广东电力》2022年第5期33-41,共9页Guangdong Electric Power

基　　金：广东省自然科学基金面上项目(2019A1515011133)。

摘　　要：超高频(very high frequency,VHF)变换器具有体积小、功率密度高的特点,在航空航天、光伏发电等领域中具有广阔前景;但由于变换器选用的储能元件数值很小,寄生参数对变换器稳定工作产生较大影响,因此超高频变换器对主电路设计提出了更高的要求。为此,在建立变换器的数学模型时应考虑寄生参数可能带来的未知偏差,使变换器在受到干扰参数变化的情况下仍能保持较好的稳态特性。将对含有寄生参数的VHF Boost谐振变换器主电路进行模态分析,随后利用Kalman滤波技术对电路进行数值建模,最后对变换器进行稳态特性分析,从而验证Kalman滤波技术在该领域中的适用性,为超高频变换器数学建模与动力学特性研究提供思路。The very high frequency(VHF)converter is with the features of small volume and high power density,which has broad application prospect in aerospace,photovoltaic(PV)and other fields.However,due to small values of the energy storage components selected by the converter,the parasitic parameters have a greater impact on the stable operation of the converter,so the VHF converter puts forward higher requirements for the design of the main circuit.For this reason,it is necessary to consider the unknown deviations caused by parasitic parameters when establishing the mathematical model of the converter,so as to ensure that the converter can maintain good steady-state characteristic in the case of disturbance parameters changing.Therefore,this paper firstly analyzes the modal state of the main circuit of the VHF Boost resonant converter with parasitic parameters,and then uses the Kalman filtering technology to numerically simulate the circuit.Finally,the steady-state characteristics of the converter are analyzed to verify the applicability of Kalman filtering technology in this field,so as to provide ideas for the mathematical modeling and dynamic characteristics of VHF converters.

关 键 词：超高频 谐振变换器 KALMAN滤波 稳态特性 建模分析 

分 类 号：TM132[电气工程—电工理论与新技术]