电动车在线供电系统高效配电方案

针对电动车在线供电系统存在严重的传输损耗问题,设计了一种高压传输-低压激励的高效配电方案.该配电方案采用高压导轨传送电能,以减小输送过程中的能量损耗;采用低压激励方式,以增强导轨的功率发射能力.给出了配电方案的基本框架,阐述了其工作原理;分析了传输损耗的机理,导出了传输损耗的计算表达式,并探讨了分段连续切换供电方法.最后,通过仿真分析和实验对该配电方案和分段连续切换供电方法的可行性和有效性进行了验证.分析结果表明,当传输距离约大于70 m时,该配电方案的传输效率具有明显优势,可以提高系统的远距离能量传输效率. 

High-Efficiency Power Distribution Scheme for Online Powered System of Electric Vehicles

In order to reduce the serious transmission loss in the online powered system for electric vehicles, a power distribution scheme based on high-voltage transfer and low-voltage stimulation was proposed. In this scheme, a high-voltage track is used to reduce the transmission loss, and a low-voltage track is utilized to enhance the ability of power transmission. The basic framework of the distribution scheme was given out, and its operating principle was expounded. In addition, the generation mechanism of the transmission loss was analyzed, the calculation formula for the transmission loss was derived, and a continuous powered approach in the tracks-switching course was investigated. Finally, simulation analysis and experiment investigation were carried out to verify the feasibility and validity of the proposed power distribution scheme and the continuous powered approach. The analysis result shows that when the transmission distance is approximately larger than 70 m, the proposed power distribution scheme can effectively improve the efficiency of remote power transmission.