Study on Output Voltage Ripple Coefficient of DC Charger Based on Orthogonal Test

2018 3rd International Conference on Insulating Materials, Material Application and Electrical Engineering

材料科学;无线电电子学;电工学

Zeng, Zuoqin^1 ; Chen, Jinshan^1 ; Zheng, Lixin^1 ; Wei, Yunming^1 ; Chen, Youchang^1

Fujian Inspection and Research Institute for Product Quality, Fuzhou

350002, China^1

关键词: Charging process;    Current distortion;    Electric vehicle batteries;    Matrix calculations;    Optimal combination;    Orthogonal test method;    Output voltage ripple coefficient;    Ripple coefficient;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/452/4/042175/pdf
DOI  :  10.1088/1757-899X/452/4/042175

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

DC chargers output high voltage, large current during their charging process, which inevitably produce and carry a lot of ripple. The ripple will not only damage performance of electric vehicle battery, but also cause current distortion at AC side. Therefore, studies on output voltage ripple coefficient of DC charger are important. In this paper, we consider the condition that the structure of DC charger is fully established, and take AC input voltage, DC output voltage and DC output current as the three main parameters. Then orthogonal test method and matrix analysis method are introduced successively, through orthogonal test table, range analysis and matrix calculations, the optimal combination status when DC chargers produce the minimum ripple coefficient is studied. Results show that when AC input voltage, DC output voltage reach up to maximum and DC output current reach up to median, output voltage ripple coefficient of RMS and peak-peak value of DC charger reach to the minimum value simultaneously. Finally, validity and reliability of the analysis results are verified through the traditional test method.