网站首页  词典首页

请输入您要查询的论文:

 

标题 基于交错Boost变流器和LLC谐振变流器的高效率车载充电机
范文 李静宇 周明 李庚银
关键词: 车载充电机; 交错Boost变流器; 零电流开关; 电动汽车; LLC谐振变流器; 效率分析
中图分类号: TN99?34; TM721 ? ? ? ? ? ? ? ? ? ? ? 文献标识码: A ? ? ? ? ? ? ? ? ? 文章编号: 1004?373X(2019)01?0119?05
Abstract: On?board charger (OBC) is a key component of electric vehicle (EV), and supplies the charging access for EV. The fore?stage AC/DC circuit of OBC uses the interleaved Boost converter for power factor correction and DC bus voltage regulation. The post?stage DC/DC converter utilizes the full?bridge LLC resonant converter to control the charging voltage and charging power. The efficiency of the interleaved Boost converter is calculated, and efficiency of the LLC resonant converter is optimized. A 3.3 kW OBC prototype was developed, whose overall efficiency and power factor can reach up to 94.9% and 99.5% respectively. The efficiency of interleaved Boost converter and LLC resonant converter can reach up to 97.7% and 97.6% respectively. The power density of OBC can reach up to 1.05 kW/L.
Keywords: on?board charger; interleaved Boost converter; zero current switching; electric vehicle; LLC resonant converter; efficiency analysis0 ?引 ?言
限于车载空间和体积,载充电机(On?Board Charger,OBC)须以高功率密度[1]、高效率为设计目标,同时还须有电气隔离、良好的PF和THD性能。OBC典型电路结构如图1所示。
前级AC/DC承担功率因数矫正和稳定直流母线电压的功能,后级DC/DC提供电气隔离,控制输出电压和功率。传统BoostPFC的电流应力大[2],电感体积大,电流纹波大,影响直流母线电容寿命。交错BoostPFC(Interleaved Boost Power Factor Correction,IBPFC)具有电流纹波小、电感体积小[3]、效率高、功率密度高、PF和THD高的优点。
LLC具有无噪音、软开关、效率高、输出电压范围宽、无反向恢复[4]等优点。但OBC的负载对象为DC 230~430 V的蓄电池,输出高压时,易失去ZCS特性;输出低压时,原边关断损耗增加。因此,实现宽输出电压范围内LLC的高效率是必须要解决的难题[5]。



4 ?結 ?论
本文将两级电路拓扑应用于3.3 kW OBC,交错BoostPFC进行功率因数校正、稳定直流母线电压。对PFC的效率进行了详细的计算和优化,其峰值效率高于97.7%,THD<4%,PF>0.99。从时域分析角度对LLC的效率进行了优化,LLC的峰值效率超过97.6%。
研制一台高功率密度、高效率3.3 kW OBC样机,其体积仅有3.1 L,功率密度超过1.05 kW/L,输出电压范围为230~430 V,整机峰值效率超过94.9%。
参考文献
[1] 王晓远,高鹏,赵玉双.电动汽车用高功率密度电机关键技术[J].电工技术学报,2015,30(6):53?59.
WANG Xiaoyuan, GAO Peng, ZHAO Yushuang. Key technology of high power density motors in electric vehicles [J]. Tran?sactions of China electrotechnical society, 2015, 30(6): 53?59.
[2] 张艺文,金科.一种单级式高功率因数无电解电容AC/DCLED驱动电源[J].中国电机工程学报,2015,35(22):5851?5858.
ZHANG Yiwen, JIN Ke. A single?stage electrolytic capacitor?less AC/DC LED driver with high input power factor [J]. Proceedings of the CSEE, 2015, 35(22): 5851?5858.
[3] 谢玲玲,龚仁喜,李畸勇.光伏发电最大功率点跟踪交错并联Boost变换器的动力学特性分析[J].中国电机工程学报,2013,33(6):38?46.
XIE Lingling, GONG Renxi, LI Jiyong. Analysis of the dyna?mical characteristics of the interleaved boost converter in maximum power point [J]. Proceedings of the CSEE, 2013, 33(6): 38?46.
[4] 孙孝峰,申彦峰,朱云娥,等.一种Boost型宽电压范围输入LLC谐振变换器[J].中国电机工程学报,2015,35(15):3895?3904.
SUN Xiaofeng, SHEN Yanfeng, ZHU Yune, et al. A Boost?integrated LLC resonant converter for wide input voltage range [J]. Proceedings of the CSEE, 2015, 35(15): 3895?3904.
[5] YILMAZ M, KREIN P T. Review of battery topologies, char?ging power levels, and infrastructure for plug?in electric and hybrid vehicles [J]. IEEE transactions on power electronics, 2013, 28(5): 2151?2169.
[6] MICHEAL O L. An interleaving PFC pre?regulator for high?power converters [R]. US: Texas Instruments Inc., 2006.
[7] IVENSKY G, BRONSHTEIN S, ABRAMOVITZ A. Approximate analysis of resonant LLC DC?DC converter [J]. IEEE transactions on power electronics, 2011, 26(11): 3274?3284.
[8] STEIGERWALD R L. A comparison of half?bridge resonant converter topologies [J]. IEEE transactions on power electro?nics, 1988, 3(2): 174?182.
[9] LEE I O, MOON G W. The k?Q analysis for an LLC series re?sonant converter [J]. IEEE transactions on power electronics, 2014, 29(1): 13?16.
[10] HURLEY W G,WOLFLE W H.应用于电力电子技术的变压器和电感:理论、设计与应用[M].北京:机械工业出版社, 2014:47?51.
HURLEY W G, WOLFLE W H. Transformers and inductors power electronics: theory, design applications [M]. Beijing: China Machine Press, 2014: 47?51.
随便看

 

科学优质学术资源、百科知识分享平台,免费提供知识科普、生活经验分享、中外学术论文、各类范文、学术文献、教学资料、学术期刊、会议、报纸、杂志、工具书等各类资源检索、在线阅读和软件app下载服务。

 

Copyright © 2004-2023 puapp.net All Rights Reserved
更新时间:2024/12/22 21:17:53