TY - GEN
T1 - Axial-flux PM synchronous machines with air-gap profiling and very high ratio of spoke rotor poles to stator concentrated coils
AU - Rallabandi, Vandana
AU - Taran, Narges
AU - Ionel, Dan M.
AU - Boldea, Ion G.
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/8/3
Y1 - 2017/8/3
N2 - Permanent magnet machines including a magnetic gearing effect are attractive for low-speed high-Torque applications. This paper proposes a dual-stator axial-flux machine topology with a high ratio for the number of rotor poles to concentrated stator coils. The stator consists of a relatively small number of teeth, with each tooth including multiple smaller/auxiliary teeth. The rotor employs spoke-Type permanent magnets, which result in high flux concentration, thereby further improving the torque density. The paper discusses the principle of operation of the proposed machine topology. Finite element results on example designs with 6 stator teeth, each having 2 and 3 auxiliary teeth, and with 20, 32, and 34 rotor poles are presented, respectively. Other feasible slot-pole combinations are also identified.
AB - Permanent magnet machines including a magnetic gearing effect are attractive for low-speed high-Torque applications. This paper proposes a dual-stator axial-flux machine topology with a high ratio for the number of rotor poles to concentrated stator coils. The stator consists of a relatively small number of teeth, with each tooth including multiple smaller/auxiliary teeth. The rotor employs spoke-Type permanent magnets, which result in high flux concentration, thereby further improving the torque density. The paper discusses the principle of operation of the proposed machine topology. Finite element results on example designs with 6 stator teeth, each having 2 and 3 auxiliary teeth, and with 20, 32, and 34 rotor poles are presented, respectively. Other feasible slot-pole combinations are also identified.
KW - axial flux
KW - electro-magnetic FEA
KW - high-Torque low-speed machines
KW - Permanent magnet machines
KW - special electric motors
KW - spoke permanent magnets
KW - Vernier electric machines
UR - http://www.scopus.com/inward/record.url?scp=85030307853&partnerID=8YFLogxK
U2 - 10.1109/IEMDC.2017.8002371
DO - 10.1109/IEMDC.2017.8002371
M3 - Conference contribution
AN - SCOPUS:85030307853
T3 - 2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017
BT - 2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017
Y2 - 21 May 2017 through 24 May 2017
ER -