• 首页|关于本刊|编委阵容|投稿指南|审稿指南|订阅指南|征稿启事|诚邀专家|学术道德|English
  • E-mail:
  • 密 码: 
  •    
  • 用户名:
  • 密 码: 
  •    
最新录用 更多>>
孔笑笑,秦岭,胡茂,候虚虚,罗松.大型停车场直流充电桩输出侧低频纹波分量抑制[J].电源学报,2017,15(6):164-170
大型停车场直流充电桩输出侧低频纹波分量抑制
Reduction of Low Frequency Output Ripple for Electric Vehicle DC Charging Spot in Large Parking Lot
投稿时间:2015-12-10  修订日期:2016-10-09
DOI:10.13234/j.issn.2095-2805.2017.6.164
中文关键词:  直流充电桩  低频纹波  转移导纳  无电解电容  前馈控制
英文关键词:dc charging spot  low frequency ripple  transfer admittance  electrolytic capacitor-less  feed-forward control
基金项目:国家自然科学基金资助项目(51207075);江苏省高校自然科学研究基金资助项目(15KJB470013)
作者单位E-mail
孔笑笑 南通大学电气工程学院, 南通 226019  
秦岭 南通大学电气工程学院, 南通 226019 qin.l@ntu.edu.cn 
胡茂 南通大学电气工程学院, 南通 226019  
候虚虚 南通大学电气工程学院, 南通 226019  
罗松 南通大学电气工程学院, 南通 226019  
摘要点击次数: 881
全文下载次数: 1014
中文摘要:
      大型停车场用直流充电桩前级采用无电解电容滤波的三相不控整流电路,导致后级DC-DC变换器输出电流、电压中含有6倍工频纹波,严重缩短动力电池组的循环使用寿命。为此,从转移导纳的角度出发,对大型停车场直流充电桩输出侧的6倍频纹波分量的抑制方法进行了研究。首先建立了Superbuck变换器的小信号模型,得出恒流充电模式下系统的闭环转移导纳,并指出抑制输出侧的6倍频纹波分量的根本方法是减小闭环转移导纳在该频率处的幅值增益;然后基于该方法,得出了2种低频纹波抑制策略:提高系统的带宽和引入输入电压前馈;最后,通过一台1.8 kW/80 kHz仿真样机验证了理论的正确性。
英文摘要:
      For the sake of the prolonging lifetime of dc charging spot, there is no electrolytic capacitor for filtering at the uncontrolled rectifier output, which draws a large AC ripple current with six times grid frequency. This will reduce severely the lifetime of propulsion battery. A fundamental principle of the basic control objective was proposed for the low frequency output ripple analysis, based on the transfer admittance model. In this paper, small-signal model has been established by the state-space averaging approach, drawing the transfer admittance model under constant current mode and indicating that the transfer admittance of the output stage DC-DC converter should be designed relatively low at six times grid frequency. Then, based on which, two strategies have been proposed for reducing the low frequency ripple:increasing the system bandwidth and adopting the input voltage feed-forward control. The correctness of theoretical analysis has been verified by a 1.8 kW/80 kHz prototype.
查看全文  查看/发表评论  下载PDF阅读器
关闭