TY - JOUR
T1 - Overall efficiency optimization for power flow in dual-mode electro-mechanical variable transmission system
AU - Wang, Weida
AU - Xiang, Changle
AU - Han, Lijin
AU - Ma, Yue
N1 - Publisher Copyright:
©, 2015, SAE-China. All right reserved.
PY - 2015/8/25
Y1 - 2015/8/25
N2 - An overall efficiency definition is proposed with considerations of the power losses in engine, several electric motors, power coupling mechanism and battery pack. The efficiency models for planetary coupling mechanism, engine, motors and battery pack are built respectively, based on which an overall power flow efficiency model for a dual-mode electro-mechanical variable transmission system is established with enhancing energy transfer efficiency as objective, and an optimization is conducted. Then the optimized results are input to a comprehensive controller for hardware-in-the-loop simulation. The results of simulation show that the method of overall power flow efficiency optimization can optimally coordinate the working points of engine and several motors according to overall efficiency, and compared with traditional power-flow optimization method based solely on engine optimal working region, it further enhances the fuel economy and transmission efficiency of system. The research provides a theoretical basis for the development of overall control strategy and control system.
AB - An overall efficiency definition is proposed with considerations of the power losses in engine, several electric motors, power coupling mechanism and battery pack. The efficiency models for planetary coupling mechanism, engine, motors and battery pack are built respectively, based on which an overall power flow efficiency model for a dual-mode electro-mechanical variable transmission system is established with enhancing energy transfer efficiency as objective, and an optimization is conducted. Then the optimized results are input to a comprehensive controller for hardware-in-the-loop simulation. The results of simulation show that the method of overall power flow efficiency optimization can optimally coordinate the working points of engine and several motors according to overall efficiency, and compared with traditional power-flow optimization method based solely on engine optimal working region, it further enhances the fuel economy and transmission efficiency of system. The research provides a theoretical basis for the development of overall control strategy and control system.
KW - Dual mode
KW - Electro-mechanical variable transmission
KW - Overall efficiency
KW - Power flow optimization
UR - https://www.scopus.com/pages/publications/84946401032
M3 - Article
AN - SCOPUS:84946401032
SN - 1000-680X
VL - 37
SP - 917
EP - 924
JO - Qiche Gongcheng/Automotive Engineering
JF - Qiche Gongcheng/Automotive Engineering
IS - 8
ER -