摘要
在电力系统中电动汽车充电机为非线性负荷,产生的谐波对电网是一种污染.在建设充电站前,有必要对充电站接入电力系统的谐波进行仿真预测,以决定是否配置谐波抑制和无功补偿设备.首先,利用某型号充电机参数建立充电机(站)的Matlab仿真模型,然后采用快速傅里叶变换(FFT)对电流进行谐波分析,得出单台充电机产生的5,7次谐波最大值分别为0.44A,0.23A,满足国家谐波标准.本文的研究方法和仿真模型同样适用于其他类型、规模的充电机(站)接入电力系统的谐波分析.
Electric vehicle （EV） chargers are non-linear load in power systems. They present a potential problem to power system in the forms of harmonic currents and poor power factors. Thus it is important to analyze the effects of EV chargers on power system harmonic currents before building a charging station. By using Matlab as a simulation tool, models for high frequency chargers and for a charging station have been set up on the basis of electric buses parameters, which are useful to the analysis and prediction of harmonic pollution. Research shows that when the charging station connected to the power system it can meet the harmonic standard and the simulation methods can also be applied to the other types of charging stations.
出处
《北京交通大学学报》
EI
CAS
CSCD
北大核心
2008年第5期85-88,共4页
JOURNAL OF BEIJING JIAOTONG UNIVERSITY
基金
国家"863"计划项目资助(2002AA501631)
关键词
谐波分析
计算机仿真
充电机(站)
MATLAB
harmonic analysis
computer simulation
electric vehicle charge（EV Charger）
Matlab
