TY - GEN
T1 - Analysis of the bearingless AC homopolar motor
AU - Severson, Eric
AU - Nilssen, Robert
AU - Undeland, Tore
AU - Mohan, Ned
PY - 2012
Y1 - 2012
N2 - The bearingless ac homopolar motor has numerous advantages over classical machines for applications such as flywheel energy storage and as a superconducting machine. In this paper, the bearingless ac homopolar motor is analyzed. Inductance matrices, alignment and reluctance torque calculations, suspension winding configurations, and radial suspension force calculations are presented for two rotor structures. Unlike previous literature, expressions for torque interference caused by suspension force winding configurations and effects of d-axis flux on suspension forces are developed and presented. Furthermore, it is demonstrated that each rotor structure can be analyzed as an equivalent classical machine to allow for easy comparison.
AB - The bearingless ac homopolar motor has numerous advantages over classical machines for applications such as flywheel energy storage and as a superconducting machine. In this paper, the bearingless ac homopolar motor is analyzed. Inductance matrices, alignment and reluctance torque calculations, suspension winding configurations, and radial suspension force calculations are presented for two rotor structures. Unlike previous literature, expressions for torque interference caused by suspension force winding configurations and effects of d-axis flux on suspension forces are developed and presented. Furthermore, it is demonstrated that each rotor structure can be analyzed as an equivalent classical machine to allow for easy comparison.
KW - ac homopolar motor
KW - active magnetic bearing
KW - flywheel energy storage
KW - superconducting machine
UR - https://www.scopus.com/pages/publications/84870789805
UR - https://www.scopus.com/pages/publications/84870789805#tab=citedBy
U2 - 10.1109/ICElMach.2012.6349926
DO - 10.1109/ICElMach.2012.6349926
M3 - Conference contribution
AN - SCOPUS:84870789805
SN - 9781467301428
T3 - Proceedings - 2012 20th International Conference on Electrical Machines, ICEM 2012
SP - 570
EP - 576
BT - Proceedings - 2012 20th International Conference on Electrical Machines, ICEM 2012
T2 - 2012 20th International Conference on Electrical Machines, ICEM 2012
Y2 - 2 September 2012 through 5 September 2012
ER -