| 摘要 |
PCT No. PCT/JP90/01090 Sec. 371 Date Apr. 25, 1991 Sec. 102(e) Date Apr. 25, 1991 PCT Filed Aug. 28, 1990 PCT Pub. No. WO91/03858 PCT Pub. Date Mar. 21, 1991.A reluctance-type motor in which two or more three-phase, half-wave reluctance-type motors are juxtaposed within an outer casing (42), the number of magnetic poles (16a, . . .) and salient poles per motor decreases. Accordingly, a long and narrow motor having a small diameter can be obtained. With a construction in which n number of three-phase, half-wave motors are juxtaposed, the output torque is multiplied by n. Further, by providing a phase difference of 120/n degrees for the output torque of each motor, the torque ripple can be made small and the characteristics at the start-up time become good. By feeding back the magnetic energy in an exciting coil to the D.C. power supply of the applied high voltage, the magnetic energy is extinguished rapidly to prevent a counter-torque from occurring, and a magnetic energy is stored rapidly by the applied high voltage to prevent a reduced torque from occurring. Alternatively, the stored magnetic energy of a de-energized exciting coil is prevented by a diode from flowing back to the D.C. power supply, and the large electromotive force at that time is utilized to make rapid the storage of the magnetic energy of the exciting coil to be energized next, thereby making the extinguishment and storage of the magnetic energy rapid to prevent a reduced torque and a counter-torque from occurring.
|
