TY - JOUR
T1 - Magnetic coupling analysis of four-quadrant transducer used for hybrid electric vehicles
AU - Zheng, Ping
AU - Liu, Ranran
AU - Wu, Qian
AU - Zhao, Jing
AU - Yao, Zhiyuan
PY - 2007/6
Y1 - 2007/6
N2 - A four-quadrant transducer (4QT), which is a hybrid electric vehicle power train concept, is a structural integration of two permanent-magnet synchronous machines. It comprises three parts: stator, outer rotor, and inner rotor. As the outer rotor is a structural and magnetic common part of the two radial-flux machines, the magnetic circuits of the two machines are coupled. A new method is put forward to solve the permanent-magnet operating point when considering the magnetic coupling during machine design, and a 4QT prototype machine of 60 kW is designed. The influences of the magnetic coupling on flux distribution and electromagnetic torque are discussed by analytical method and finite-element method, respectively. It can be concluded that the decoupling is easy to perform. The magnetization-direction choice of the two layers of the permanent magnets on the outer rotor is also discussed, and the consistent magnetization is preferred.
AB - A four-quadrant transducer (4QT), which is a hybrid electric vehicle power train concept, is a structural integration of two permanent-magnet synchronous machines. It comprises three parts: stator, outer rotor, and inner rotor. As the outer rotor is a structural and magnetic common part of the two radial-flux machines, the magnetic circuits of the two machines are coupled. A new method is put forward to solve the permanent-magnet operating point when considering the magnetic coupling during machine design, and a 4QT prototype machine of 60 kW is designed. The influences of the magnetic coupling on flux distribution and electromagnetic torque are discussed by analytical method and finite-element method, respectively. It can be concluded that the decoupling is easy to perform. The magnetization-direction choice of the two layers of the permanent magnets on the outer rotor is also discussed, and the consistent magnetization is preferred.
KW - Four-quadrant transducer (4QT)
KW - Machine design
KW - Magnetic coupling
KW - Magnetization direction
KW - Permanent-magnet synchronous machine (PMSM)
UR - https://www.scopus.com/pages/publications/34249087166
U2 - 10.1109/TMAG.2007.892861
DO - 10.1109/TMAG.2007.892861
M3 - Article
AN - SCOPUS:34249087166
SN - 0018-9464
VL - 43
SP - 2597
EP - 2599
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
IS - 6
ER -