Analysis of Electric Vehicle DC High Current Conversion Technology

[摘要] Based on the background of electric vehicles, it is elaborated the necessity about electric energy accurate metering of electric vehicle power batteries, and it is analyzed about the charging and discharging characteristics of power batteries. It is needed a DC large current converter to realize accurate calibration of power batteries electric energy metering. Several kinds of measuring methods are analyzed based on shunts and magnetic induction principle in detail. It is put forward power batteries charge and discharge calibration system principle, and it is simulated and analyzed ripple waves containing rate and harmonic waves containing rate of power batteries AC side and DC side. It is put forward suitable DC large current measurement methods of power batteries by comparing different measurement principles and it is looked forward the DC large current measurement techniques.

[发布机构] China Electric Power Research Institute, Beijing; 100192, China^1

[效力级别] 电工学

[关键词] Calibration system;Charge and discharge;Discharging characteristics;Electric energies;Electric energy metering;Induction principles;Measurement techniques;Measuring method