A novel efficiency modeling method for a DC-DC converter in the hybrid energy storage system for electric vehicles

作者：Wang Chun; He Hongwen^*; Xiong Rui; Zhang Yongzhi

来源：Applied Energy Symposium and Summit - Low Carbon Cities and Urban Energy Systems (CUE), China,Jiangxi,Fuzhou, 2015-11-15 to 2015-11-17.

DOI：10.1016/j.egypro.2016.06.115

• DC-DC converter
• Hybrid power system
• Energy loss
• Efficiency model
• Electric vehicles

Accurate DC-DC converter efficiency model is very important in the energy management optimal control of electric vehicles. In order to establish a reliable efficiency model and improve its accuracy, a novel circuit average modeling method of non-ideal Buck converter is presented. The mathematical model of non-ideal Buck converter is established. To verify the accuracy of the mathematical model, the simulation is realized by MATLAB/Simulink. A comparison between theoretical value and simulation value is analyzed. The results show that: first, the Buck converter efficiency model is reasonable. Second, the largest absolute error value is 2.3%.

• 出版日期2016
• 单位四川轻化工大学; 北京理工大学