TITLE:
Impact Analysis of Off-board Charger to Power Quality
AUTHORS:
Yubo Fan, Chunlin Guo, Wenbo Qi, Zheci Tang
KEYWORDS:
Electric Vehicles; Charger; Power Quality
JOURNAL NAME:
Energy and Power Engineering,
Vol.5 No.4B,
November
18,
2013
ABSTRACT: In this paper, we tested the entire charging process of
a single off-board charger in one charging station in Beijing. Among the
testing data, we chose the typical power quality parameters and compared them with
national standard. Then we drew conclusions as follows: 1) Electric vehicle
battery is the capacitive load. It can export reactive power when charging. 2) In
the charging process of the off-board charger, indicators of voltage deviation,
frequency deviation, power factor, and voltage distortion rate are qualified. 3)
Off-board charger produces odd harmonics in the charging process, and with
increasing harmonic order, harmonic content reduces. There is a certain amount
of high-order harmonic in off-board charger, mainly distributing around 6650
kHz. 4) Generated harmonics of the actual device, the harmonic is mainly
reflected in the current, voltage, only a small distortion.