应用于矿用电机车的并联交错DC/DC变换器研究
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摘要
针对目前应用于矿用电机车的非隔离型变换器转换效率低、易损坏开关器件、不适用于超级电容等问题,介绍了一种应用于矿用电机车的并联交错DC/DC变换器。在低压侧采用并联交错结构对电容充电,并减小电流纹波;在高压侧通过增加一个开关管使2个电容串联放电,以提高升降压增益。介绍了该变换器在升压驱动模式和降压充电模式下的工作过程,并设计了电压/电流双闭环升压和恒流限压充电控制器。实验结果表明,并联交错DC/DC变换器能够有效提高电机车在直流变换环节的性能。
In view of problems of low conversion efficiency,easy damage of switching devices and inapplicable to super capacitors of non-isolated converters currently used in mine electric locomotive,a parallel interleaved DC/DC converter applied to mine electric locomotive was introduced.At the low voltage side,aparallel interleaving structure is proposed to charge the capacitor and reduce current ripple;At the high voltage side,two capacitors are connected in series by adding a switch tube to increase buckboost gain.Working process of the converter under boost drive mode and buck charging mode are described.The voltage/current double closed-loop step-up and constant current limit charging controller are designed.The experimental results show that the parallel interleaved DC/DC converter can effectively improve the performance of the electric locomotive in DC conversion.
In view of problems of low conversion efficiency,easy damage of switching devices and inapplicable to super capacitors of non-isolated converters currently used in mine electric locomotive,a parallel interleaved DC/DC converter applied to mine electric locomotive was introduced.At the low voltage side,aparallel interleaving structure is proposed to charge the capacitor and reduce current ripple;At the high voltage side,two capacitors are connected in series by adding a switch tube to increase buckboost gain.Working process of the converter under boost drive mode and buck charging mode are described.The voltage/current double closed-loop step-up and constant current limit charging controller are designed.The experimental results show that the parallel interleaved DC/DC converter can effectively improve the performance of the electric locomotive in DC conversion.
引文
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[2]王栋梁,温灿国.锂离子蓄电池在矿用电机车上的应用[J].矿山机械,2011,39(4):40-43.WANG Dongliang,WEN Canguo.Application of lithiumion batteries to mining electric locomotives[J].Mining&Processing Equipment,2011,39(4):40-43.
[3]杨金鑫,祝龙记.矿用电机车车载充电系统研究[J].工矿自动化,2019,45(1):104-108.YANG Jinxin,ZHU Longji.Research on on-board charging system of mine-used electric locomotive[J].Industry and Mine Automation,2019,45(1):104-108.
[4]FRIESKE B,KLOETZKE M,MAUSER F.Trends in vehicle concept and key technology development for hybrid and battery electric vehicles[J].World Electric Vehicle Journal,2013,6(1):9-20.
[5]宋永华,阳岳希,胡泽春.电动汽车电池的现状及发展趋势[J].电网技术,2011,35(4):1-7.SONG Yonghua,YANG Yuexi,HU Zechun.Present status and development trend of batteries for electric vehicles[J].Power System Technology,2011,35(4):1-7.
[6]曹秉刚,曹建波,李军伟,等.超级电容在电动车中的应用研究[J].西安交通大学学报,2008,42(11):1317-1322.CAO Binggang,CAO Jianbo,LI Junwei,et al.Ultracapacitor with applications to electric vehicle[J].Journal of Xi'an Jiaotong University,2008,42(11):1317-1322.
[7]CORNEA O,ANDREESCU G D,MUNTEAN N,et al.Bidirectional power flow control in a DCmicrogrid through a switched-capacitor cell hybrid DC-DC converter[J].IEEE Transactions on Industrial Electronics,2017,64(4):3012-3022.
[8]陆治国,祝万平,刘捷丰,等.一种新型交错并联双向DC/DC变换器[J].中国电机工程学报,2013,33(12):39-46.LU Zhiguo,ZHU Wanping,LIU Jiefeng,et al.Anovel interleaved parallel bidirectional DC/DCconverter[J].Proceedings of the CSEE,2013,33(12):39-46.
[9]WANG Yifeng,XUE Likun,WANG Chengshan,et al.Interleaved high-conversion-ratio bidirectional DC/DC converter for distributed energy-storage systems-circuit generation,analysis and design[J].IEEE Transactions on Power Electronics,2015,31(8):5547-5552.
[10]WANG P,ZHAO C,ZHANG Y,et al.Abidirectional three-level DC-DC converter with a wide voltage conversion range for hybrid energy source electric vehicles[J].Journal of power electronics,2017,17(2):334-345.
[11]YANG M K,LEE S J,CHOI W Y.High efficiency non-isolated dynamic voltage restorer using soft switching DC-DC converter for parallel-voltage compensation[C]//IEEE Energy Conversion Congress and Exposition,2015.
[12]周美兰,田小晨.用于电动汽车的交错并联软开关双向DC/DC变换器[J].哈尔滨理工大学学报,2016,21(4):83-89.ZHOU Meilan,TIAN Xiaochen.An interleaved softswitching bidirectional DC/DC converter in electric vehicles[J].Journal of Harbin University of Science and Technology,2016,21(4):83-89.
[13]马奎安.超级电容器储能系统中双向DC/DC变流器设计[D].杭州:浙江大学,2010.
[14]田炜,常鹏飞,潘文霞.有轨电车超级电容的充电方式转换技术研究[J].电力工程技术,2018,37(3):102-106.TIAN Wei,CHANG Pengfei,PAN Wenxia.Research on the power supply system for the super capacitor tramcar[J].Electric Power Engineering Technology,2018,37(3):102-106.
[15]冯兴田,张磊,高春侠.带超级电容储能的双向DC/DC变换器实验平台[J].电力系统及其自动化学报,2018,30(8):145-150.FENG Xingtian,ZHANG Lei,GAO Chunxia.Experimental platform of bidirectional DC/DCconverter with super-capacitor energy storage[J].Proceedings of the CSU-EPSA,2018,30(8):145-150.