谐振开关电容变换器中硬开通问题

doi:10.19595/j.cnki.1000-6753.tces.L80139

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摘要谐振开关电容变换器（RSCC）凭借高功率密度和高效率的性能得以被广泛研究。理想情况下其谐振电流从零开始缓慢增大,使开关器件实现了零电流开通,但由于变换器的寄生参数影响,谐振电流不可避免地会产生电流尖峰或电流阶跃等硬开通问题,增加了RSCC开通损耗,并影响其安全运行。为解决上述问题,在建立数学模型的基础上,分析RSCC硬开通与脉冲调制、寄生参数之间的关系,并提出相应的解决方案。最后,搭建仿真模型和实验平台对上述理论和解决方案进行验证,实验结果表明提出的方案能够有效解决硬开通问题,进而提高了变换器的效率和安全性。

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	王淼
	杨晓峰
	郑琼林

关键词 ：谐振开关电容变换器, 硬开通, 效率, 安全性, 寄生参数

Abstract：Resonant switched capacitor converter (RSCC) has been extensively studied because of high power density and high efficiency. In ideal status, the resonant current increases slowly from zero current, then the switches achieve the zero-current turning-on. Considering the parasitical parameters, the resonant current may have the hard turning-on problems, such as spiked current or step current, which lead to the turn-on switching loss and unsafe operation of RSCC. To solve these problems, built the mathematical model and analyzed the relationship between RSCC hard turning-on problems control strategies and parasitical parameters. Then the solutions for the hard turning-on was proposed. Finally, the simulation and experimental platform were built, and the results showed that the proposed solutions may solve the problems effectively, then increase the efficiency and safety of RSCC.

Key words： Resonant switched capacitor converter (RSCC) hard turning-on efficiency safety parasitical parameters

收稿日期: 2018-05-31 出版日期: 2019-07-29

PACS:

TM46

基金资助:国家重点研发计划资助项目（2017YFB1201304-09）

通讯作者: 刘建强,男,1981年生,教授,研究方向为电力电子与电力传动。E-mail:liujianqiang@bjtu.edu.cn

作者简介: 王淼,男,1994年生,博士研究生,研究方向为谐振开关电容变换器、电力电子技术在轨道交通中的应用等。E-mail:wangmiao@bjtu.edu.cn

引用本文:

王淼, 杨晓峰, 郑琼林. 谐振开关电容变换器中硬开通问题[J]. 电工技术学报, 2019, 34(zk1): 154-162. Wang Miao, Yang Xiaofeng, Trillion Q. Zheng. The Hard Turning-On Problems of Resonant Switched Capacitor Converter. Transactions of China Electrotechnical Society, 2019, 34(zk1): 154-162.

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