Research on Harmonic of Electric Vehicle Charger Based on Matlab

Abstract:

The charger for the electric vehicle (EV) is a nonlinear device, and will cause harmonic pollution when put into operation. This paper, firstly, analyzes harmonic caused by charger theoretically and defines its equivalent model as a three-phase full-bridge controlled rectifier, getting the characteristics of charger through the Fourier analysis of the switching function. Secondly, this paper builds the simulation model of the charger using Matlab/Simulink and replaces the car battery with a nonlinear resistor with resistance value changing over time. The parameters in the simulation model are the same as the charging stations in use and the results verify the charger’s harmonic characteristics. Finally, compared with the measured data, the results show the simulation model is suitable for engineering calculations.

• Periodical: Applied Mechanics and Materials (Volumes 291-294)
• Pages: 882-885
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.291-294.882
• Online since: February 2013
• Authors: Lei Zhang, Jun Liu
• Keywords: Charger, Electric Vehicle (EV), Harmonics, MATLAB/SIMULINK

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