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清华大学学报(自然科学版)  2020, Vol. 60 Issue (9): 751-762    DOI: 10.16511/j.cnki.qhdxxb.2020.21.009
  电机工程 本期目录 | 过刊浏览 | 高级检索 |
共交流母线多端口变换器高频振荡特性分析
魏树生1, 赵争鸣1, 文武松1, 李凯2, 袁立强1, 蔡伟谦1
1. 清华大学 电机工程与应用电子技术系, 北京 100084;
2. 北京交通大学 电气工程学院, 北京 100044
Analysis of the high-frequency oscillation characteristics of a multi-port converter with an AC link
WEI Shusheng1, ZHAO Zhengming1, WEN Wusong1, LI Kai2, YUAN Liqiang1, CAI Weiqian1
1. Department of Electrical Engineering, Tsinghua University, Beijing 100084, China;
2. School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
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摘要 在大容量多端口电力电子变换器中,基于模块化多有源桥(MMAB)的共交流母线拓扑具有端口隔离、模块化和损耗低的优点,近年来开始得到越来越多的关注。相对于直流母线,高频交流母线存在着固有的高频振荡。母线电压的振荡会增加变换器损耗,危害系统的安全运行,同时单个模块振荡会对其他互连的模块造成影响。该文以两模块单元组成的两种基本变换器为对象,研究了基于模块化多有源桥的共高频交流母线变换器中的振荡问题。利用频域分析,对系统振荡和高频变压器、电感和器件杂散电容等参数的关系进行了推导,给出了不控和受控2种模式下交流母线高频振荡的关键因素。最后,通过变换器在不同工作模式下以及2个模式间切换的实验,对上述结论进行了实验验证,为后续降低和消除高频母线振荡奠定了基础。
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魏树生
赵争鸣
文武松
李凯
袁立强
蔡伟谦
关键词 共交流母线多有源桥(MMAB)高频振荡杂散参数    
Abstract:High-frequency links based on modular multi-active bridges (MMAB) are useful for high power multi-port converters since they are modular, efficient and isolate the various ports. High-frequency AC buses have intrinsic oscillations that do not occur in DC buses which increase the converter losses and make the system less safe. Also, oscillations in one module affect the operations of other modules connected to the common AC bus. This study modeled two kinds of converters with each having two modules to study the effects of the high-frequency oscillations in the AC-link in an MMAB. The frequency domain analysis method was then used to investigate the relationship between the oscillations and the resonant tank parameters, including the stray parameters of the high-frequency transformer (HFT) and the stray capacitance of the switching devices. The results showed the key factors leading to the oscillations for both the uncontrolled mode and the controlled mode. Tests were conducted for the two modes and for switching between the two modes. The analytical results are verified by experimental data which would lay a foundation to reduce the oscillations in MMAB in the future.
Key wordsAC link bus    modular multi-active bridge (MMAB)    high-frequency oscillation    stray parameters
收稿日期: 2019-12-27      出版日期: 2020-07-04
基金资助:赵争鸣,教授,E-mail:zhaozm@tsinghua.edu.cn
引用本文:   
魏树生, 赵争鸣, 文武松, 李凯, 袁立强, 蔡伟谦. 共交流母线多端口变换器高频振荡特性分析[J]. 清华大学学报(自然科学版), 2020, 60(9): 751-762.
WEI Shusheng, ZHAO Zhengming, WEN Wusong, LI Kai, YUAN Liqiang, CAI Weiqian. Analysis of the high-frequency oscillation characteristics of a multi-port converter with an AC link. Journal of Tsinghua University(Science and Technology), 2020, 60(9): 751-762.
链接本文:  
http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2020.21.009  或          http://jst.tsinghuajournals.com/CN/Y2020/V60/I9/751
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
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[1] 崔彬, 李欣阳, 薛芃, 蒋晓华. 双主动全桥变换器的高频振荡影响因素[J]. 清华大学学报(自然科学版), 2020, 60(6): 530-536.
[2] 于华龙,赵争鸣,袁立强,鲁挺,姬世奇. 高压IGBT串联变换器直流母排设计与杂散参数分析[J]. 清华大学学报(自然科学版), 2014, 54(4): 540-545.
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