摘要
相比传统的Boost变换器,双管升压变换器可以获得更高的增益,有效地降低了开关管的电压/电流应力,可以作为光伏系统和燃料电池系统的接口变换器。为了提升功率变换系统的功率密度,需要进一步提升开关频率。然而低开关频率下对电路分析可以忽略的寄生参数在高频条件下将对变换器的增益和器件应力带来重要影响,但目前针对双管升压变换器的分析方法难以评估高频下电路寄生参数对性能的影响。针对该问题,该文建立高频下考虑寄生参数的双管升压变换器模型,根据潜电路分析法提出考虑寄生参数的双管变换器潜在的电路模态,分析高频条件下寄生参数对双管升压变换器增益、功率器件的电压/电流应力、变换器损耗和效率等方面的影响。最后,在实验室中建立双管升压变换器实验平台,对高频下电路性能进行验证。
Compared with the traditional Boost converter,the dual-switch Boost converter can obtain higher gain,effectively reduce the voltage/current stress of the switching tube,and can be used as an interface converter for photovoltaic systems and fuel cell systems.In order to improve the power density of the power conversion system,it is necessary to further increase the switching frequency.However,parasitic parameters that can be ignored in circuit analysis at low switching frequency will have an important impact on the gain and device stress of the high frequency converter.It is difficult to evaluate the influence of parasitic parameters on the performance of the dual-switch Boost converter at high frequency by the current analysis methods.Therefore,this paper establishes a model of dual-switch Boost converter considering parasitic parameters at high frequency,puts forward the sneak circuit modes considering parasitic parameters according to the sneak circuit analysis method,and analyzes the influence of parasitic parameters on the gain of dual-switch Boost converters,voltage/current stress of power devices,converter loss and efficiency at high frequency.Finally,an experimental platform of the dual-switch Boost converter is established in the laboratory to verify the circuit performance at high frequency.
作者
郭英军
孔德楷
汤雨
孙鹤旭
董砚
Guo Yingjun;Kong Dekai;Tang Yu;Sun Hexu;Dong Yan(State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology,Tianjin 300130 China;School of Electrical Engineering Hebei University of Science and Technology,Shijiazhuang 050018 China;Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province Hebei University of Technology,Tianjin 300130 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2022年第6期1431-1441,共11页
Transactions of China Electrotechnical Society
基金
河北省杰出青年科学基金资助项目(E2020202140)
中央引导地方科技发展资金项目(216Z4401G)
河北省科技厅重点研发计划项目(20314501D)
河北省科技支撑重点研发项目(19214501D)
河北省高校百名优秀创新人才支持计划项目(Ⅲ)(SLRC2019025)资助。
关键词
高开关频率
寄生参数
双管升压变换器
特性分析
High switching frequency
parasitic parameters
dual-switch boost converter
characteristic analysis
