TY - GEN
T1 - Improved ferrite magnet vernier machine for an in-wheel machine
AU - Sato, Kazuhiro
AU - Hosoya, Ryota
AU - Shimomura, Shoji
PY - 2012/12/1
Y1 - 2012/12/1
N2 - Directly driven in-wheel machines are required to generate high output power at low speed. The authors previously proposed the use of a permanent magnet vernier machine, which is suitable for applications that require large torque. The remarkable feature of the previously proposed machine is the use of only ferrite magnets in a 'V' configuration. This machine satisfied the required output characteristics of the in-wheel machine for EV and demonstrated high efficiency in computer simulations based on FEA. However, the design of this machine was somewhat problematic. Therefore, the present paper discusses downsizing of the machine, providing a wider air gap, and the use of concentrated windings. We have achieved an effective design for downsizing while maintaining the output and the torque density. The volume of the newly designed machine is 53% smaller than that of the previous machine, and target performances of 40 kW and 400 Nm were obtained.
AB - Directly driven in-wheel machines are required to generate high output power at low speed. The authors previously proposed the use of a permanent magnet vernier machine, which is suitable for applications that require large torque. The remarkable feature of the previously proposed machine is the use of only ferrite magnets in a 'V' configuration. This machine satisfied the required output characteristics of the in-wheel machine for EV and demonstrated high efficiency in computer simulations based on FEA. However, the design of this machine was somewhat problematic. Therefore, the present paper discusses downsizing of the machine, providing a wider air gap, and the use of concentrated windings. We have achieved an effective design for downsizing while maintaining the output and the torque density. The volume of the newly designed machine is 53% smaller than that of the previous machine, and target performances of 40 kW and 400 Nm were obtained.
KW - Electric Vehicle
KW - Ferrite Magnet
KW - In-wheel
KW - Outer-rotor
KW - Vernier Machine
UR - http://www.scopus.com/inward/record.url?scp=84874475944&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84874475944&partnerID=8YFLogxK
U2 - 10.1109/PECon.2012.6450248
DO - 10.1109/PECon.2012.6450248
M3 - Conference contribution
AN - SCOPUS:84874475944
SN - 9781467350198
T3 - PECon 2012 - 2012 IEEE International Conference on Power and Energy
SP - 414
EP - 419
BT - PECon 2012 - 2012 IEEE International Conference on Power and Energy
T2 - 2012 IEEE International Conference on Power and Energy, PECon 2012
Y2 - 2 December 2012 through 5 December 2012
ER -