抄録
This paper addresses novel control strategy for 6 salient-pole active magnetic bearings (AMBs). Since 6 salient-pole type AMB has less number of poles as compared with usual 8 salient-pole type AMB, it becomes advantageous to a miniaturization and a low cost. However, since the magnetic circuit has not been independent in x and y direction, bearing forces for coil currents become complicated. Previous research introduced a minimum energy control method which makes the copper loss in coils the minimum. However in the minimum energy control method, the maximum bearing force of specific directions is less than that of the other directions. In order to solve this problem, the maximum bearing force control method is proposed in this paper. Analysis and experiments confirm that the proposed method provides stable rotor levitation and larger bearing force than that of minimum energy control method.
