基于LC谐振单元的多回路开关电容型均衡电路
TM71; 传统的串并联开关电容型均衡电路在工作过程中会产生影响电路可靠性的冲击电流,为了改善该问题对电路性能的影响,同时提升电路的均衡速度,提出一种基于LC谐振单元的多回路开关电容型均衡电路.电路的LC谐振单元由均衡电容串联电感元件组成,所有开关器件均工作在零电流开关模式下,这将有效降低开关损耗,并有效抑制电路中的冲击电流,从而延长开关器件的使用寿命,提高电路的可靠性.所提出的均衡电路采用两个LC谐振单元作为储能元件组的组间均衡支路,可以同时实现储能元件单体与单体之间以及储能元件组与组之间的均衡,在保证均衡精度的同时,有效地提升电路均衡的速度.详细地分析了电路的特点与工作原理,通过搭建仿真平...
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| Published in | 电机与控制学报 Vol. 28; no. 5; pp. 48 - 59 |
|---|---|
| Main Authors | , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
西南交通大学 电气工程学院,四川 成都 610031
01.05.2024
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1007-449X |
| DOI | 10.15938/j.emc.2024.05.006 |
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| Abstract | TM71; 传统的串并联开关电容型均衡电路在工作过程中会产生影响电路可靠性的冲击电流,为了改善该问题对电路性能的影响,同时提升电路的均衡速度,提出一种基于LC谐振单元的多回路开关电容型均衡电路.电路的LC谐振单元由均衡电容串联电感元件组成,所有开关器件均工作在零电流开关模式下,这将有效降低开关损耗,并有效抑制电路中的冲击电流,从而延长开关器件的使用寿命,提高电路的可靠性.所提出的均衡电路采用两个LC谐振单元作为储能元件组的组间均衡支路,可以同时实现储能元件单体与单体之间以及储能元件组与组之间的均衡,在保证均衡精度的同时,有效地提升电路均衡的速度.详细地分析了电路的特点与工作原理,通过搭建仿真平台,将所提出电路与现有的同类型均衡电路对比,验证了所提出均衡电路对均衡速度的提升作用.搭建了五个串联超级电容的实验平台,实验结果表明,所提出的电路可以提升 55.85%的均衡速度,并且对冲击电流有显著的抑制作用. |
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| AbstractList | TM71; 传统的串并联开关电容型均衡电路在工作过程中会产生影响电路可靠性的冲击电流,为了改善该问题对电路性能的影响,同时提升电路的均衡速度,提出一种基于LC谐振单元的多回路开关电容型均衡电路.电路的LC谐振单元由均衡电容串联电感元件组成,所有开关器件均工作在零电流开关模式下,这将有效降低开关损耗,并有效抑制电路中的冲击电流,从而延长开关器件的使用寿命,提高电路的可靠性.所提出的均衡电路采用两个LC谐振单元作为储能元件组的组间均衡支路,可以同时实现储能元件单体与单体之间以及储能元件组与组之间的均衡,在保证均衡精度的同时,有效地提升电路均衡的速度.详细地分析了电路的特点与工作原理,通过搭建仿真平台,将所提出电路与现有的同类型均衡电路对比,验证了所提出均衡电路对均衡速度的提升作用.搭建了五个串联超级电容的实验平台,实验结果表明,所提出的电路可以提升 55.85%的均衡速度,并且对冲击电流有显著的抑制作用. |
| Abstract_FL | The traditional series-parallel switched-capacitor equalizer produces impulse current during its operation,which will affect the reliability of the circuit.In order to improve the effect of this problem that acts on the circuit performance,as well as to increase the equalization speed of the circuit,a multi-loop switched-capacitor equalizer based on LC resonant unit was proposed.The LC resonant unit of this circuit is composed of equalizing capacitor in series with inductor,all the switches can operate in zero-current-switching mode.In this way,the switching losses will be effectively reduced,the impulse current can be effectively suppressed as well,so that the lifetime of switches can be prolonged,as well as the reliability of the equalizer is improved.In the proposed equalizer,two LC resonant units were used as the equaliza-tion branches between two energy storage groups,and as a result it can realize the equalization both be-tween battery cells and battery groups,which contributes to the equalization speed effectively with high e-qualization accuracy.The characteristics and working principle of the proposed equalizer were analyzed in detail,by means of building a simulation platform,the proposed equalizer was compared with the existing equalization circuits with similar type,and the advantage of the proposed equalizer on the improvement of equalization speed was verified.An experimental platform was set up to equalize five series-connected su-percapacitors.The experimental results verify that the proposed circuit can increase the equalization speed by 55.85%and has a significant inhibition effect on impulse current. |
| Author | 张小兵 刘姝仪 周国华 |
| AuthorAffiliation | 西南交通大学 电气工程学院,四川 成都 610031 |
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| Author_FL | ZHANG Xiaobing ZHOU Guohua LIU Shuyi |
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| Author_xml | – sequence: 1 fullname: 周国华 – sequence: 2 fullname: 刘姝仪 – sequence: 3 fullname: 张小兵 |
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| DOI | 10.15938/j.emc.2024.05.006 |
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| Keywords | 冲击电流 inrush current grouped equalization energy storage stack 开关电容 分组均衡 零电流开关 switched-capacitor 储能元件组 LC resonant unit zero-cur-rent-switching LC谐振单元 |
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| Title | 基于LC谐振单元的多回路开关电容型均衡电路 |
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