| 摘要 |
PROBLEM TO BE SOLVED: To attain a magnetically levitated motor capable of size reduction by combining the magnetically levitated motor and a thrust magnetic bearing by using the bias magnetic flux of the hybrid-type magnetically-levitated motor. SOLUTION: Stator cores 55, 56 are provided which are wound with a first stator winding generating levitation control magnetic flux of two poles for levitation control of a rotor 50 with permanent magnets 53, 54 fixed and a second stator winding generating a rotating field for the rotor 50. A rotor-side magnetic circuit part for a thrust bearing is disposed at a rotor, and two stator- side magnetic circuit parts for a thrust bearing, are disposed with the rotor-side magnetic circuit for a thrust bearing sandwiched, so that bias magnetic fluxes 65, 66 for forming levitation control magnetic flux may pass through both gaps in a thrust direction formed between the rotor-side magnetic circuit part for a thrust bearing and the two stator-side magnetic circuit parts for a thrust bearing, and a coil 59 for thrust control is disposed between the two stator-side magnetic circuit parts for a thrust bearing.
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