Title :
Active Voltage Control enhances overall operating efficiency of traction motor in electric bus
Author :
Du Lei ; Fuyuan Yang ; Du Jiaen ; Yao Changsheng ; Yu Ping ; Ye Xiao
Author_Institution :
Tsinghua Univ., Beijing, China
fDate :
Aug. 31 2014-Sept. 3 2014
Abstract :
Bus voltage affects the characteristic curve of traction motor, as well as high-efficiency region. This paper discusses if it is possible to improve the motor efficiency by AVC (Active Voltage Control), and if so, to what extent. Based on China Bus Urban Cycle, an 8-meter electric bus is studied via simulation in Matlab/Simulink. And the AVC controller is designed to determine the most efficient bus voltage in every time slot. The comparison of instantaneous motor efficiency is made between AVC and 624V. The results indicate that AVC has potential to enhance overall operating efficiency of traction motor in electric bus: 2.8% improvement of driving efficiency and 0.79% of regenerating efficiency can be achieved.
Keywords :
electric vehicles; traction motors; voltage control; AVC; China bus urban cycle; Matlab-Simulink; active voltage control; bus voltage; electric bus; instantaneous motor; traction motor; voltage 624 V; Automatic voltage control; Educational institutions; Permanent magnet motors; Torque; Traction motors; Vehicles;
Conference_Titel :
Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014 IEEE Conference and Expo
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-4240-4
DOI :
10.1109/ITEC-AP.2014.6940787
