Journal of South China University of Technology (Natural Science Edition) ›› 2014, Vol. 42 ›› Issue (6): 12-16,24.doi: 10.3969/j.issn.1000-565X.2014.06.003

• Power & Electrical Engineering • Previous Articles     Next Articles

DSP + CPLD-Based High -Power Efficient Charging Power Supply for Electric Vehicles

Du Gui- ping Chen Shuang He Zheng- dong Zhang Bo   

  1. School of Electric Power,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2014-01-10 Revised:2014-01-24 Online:2014-06-25 Published:2014-05-01
  • Contact: 杜贵平(1968-)，男，教授，主要从事高频工业电源、高频功率变换器杂散参数行为特性等的研究． E-mail:gpdu@scut.edu.cn
  • About author:杜贵平(1968-)，男，教授，主要从事高频工业电源、高频功率变换器杂散参数行为特性等的研究．
  • Supported by:

    国家自然科学基金资助项目(50977033);广东省 － 教育部产学研结合项目(2011A090100021);广州市科技支撑计划项目(2010J- D00241)

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Abstract:

When multiple charging modules operate in parallel,there exists such problems as low efficiency,seri-ous harmonic pollution and light load in the later charging stage or in the case of charging electric cars with smallerbattery capacity.In order to solve this problem,a ZVZCS high- power charging power supply module for electric ve-hicles is developed based on DSP + CPLD,and an experiment platform with an output power of 288 kW (600 V/480A) is constructed.Then,a novel parallel control strategy is proposed to ensure the charging current (voltage)for electric vehicles with the least charging modules.Experimental results show that,when a single module runs,the charging power efficiency is up to 96.5% under a full load; and that,when multiple modules runs in parallel,the charging power efficiency always maintains at above 90.0%,which means that the proposed parallel controlstrategy is correct and feasible.

Key words: high- power efficient charging power supply, electric vehicle, parallel control