Comparison among Chargers of Electric Vehicle Based on Different Control Strategies


The charger of electric vehicle is a power electronic device which consists of rectifying devices and DC-DC converters. This nonlinear diode rectifier circuit has low power factor and high harmonic content. In order to improve power factor and reduce the harmonic distortion rate of the AC side current, single-phase non-controlled rectifier charger needs to install the active power factor correction device. A piece of power system analysis software which is called PSCAD is used in modeling of an EV charger which contains Boost-APFC. By means of simulation and analysis, differences of APFC characteristics between the hysteresis current control mode and average current control mode which has an influence on the power grid are compared. The consequence of simulation shows that the two control strategies achieve power factor correction and harmonic reduction requirements; Boost type power conversion circuit employs the average current control mode is better, which has following features: relatively faster settling time of the output voltage, relatively smaller overshoot, lower current harmonic distortion rate on AC side, lower switching frequency and better control effect.

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P. Hou, C. Guo and Y. Fan, "Comparison among Chargers of Electric Vehicle Based on Different Control Strategies," Energy and Power Engineering, Vol. 5 No. 4B, 2013, pp. 1398-1403. doi: 10.4236/epe.2013.54B265.

Conflicts of Interest

The authors declare no conflicts of interest.


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