An electrical energy meter for electric vehicle charging machines based on FFT and wavelet analysis

Author

Zhao Fuping ; Liu Rongmei ; He Bei ; Hui Yan

Author_Institution

Electr. Power Res. Inst., Chongqing Power Co., Chongqing, China

fYear

2014

Firstpage

1

Lastpage

5

Abstract

More and more electric vehicles have been used in China, and many charging station has been built in China. Due to the reactive power loss caused by charging devices, the method to measure the power consumed by charging device is critical for power company.Based on impact loads generated by electric vehicles to the grid in fast charging mode, this paper studies the energy measurement method of electric vehicle charging mode. By comparing the fast Fourier transform and wavelet analysis algorithms, an electric energy measurement device of electric vehicle charging machine based on FFT and wavelet analysis are proposed. Combined with fast data processing functions of DSP, the device can quickly and accurately measures electric vehicles charging amounts under different charging modes.

Keywords

battery chargers; battery powered vehicles; energy measurement; fast Fourier transforms; power meters; reactive power; wavelet transforms; DSP; FFT; electric energy measurement device; electric vehicle charging machine; electrical energy meter; energy measurement method; fast Fourier transform; fast charging mode; fast data processing function; reactive power loss; wavelet analysis algorithms; Electric vehicles; Energy measurement; Harmonic analysis; Power system harmonics; Wavelet analysis; Wavelet transforms; FFT; electric energy measurement; electric vehicle charging machine; wavelet analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Fundamentals of Electrical Engineering (ISFEE), 2014 International Symposium on

Print_ISBN

978-1-4799-6820-6

Type

conf

DOI

10.1109/ISFEE.2014.7050558

Filename

7050558