| 摘要 |
PROBLEM TO BE SOLVED: To reduce the magnetic force flowing to a stator through switching the power applied to an electromagnet by means of a current direction change over switch. SOLUTION: For this high-torque motor generator, electromagnets 9 are arranged severally on the rotary shaft 2 at both ends of the permeable member arranged inside the permanent magnet member constituting a rotor, and this motor generator is provided with a current direction changeover switch 35, which switches the current being applied to the electromagnets in the same direction as or in the direction opposite to the direction of the magnetic force of the permanent magnet member. The occurrence of cogging can be prevented through reduction the magnetic force flowing in the stator by putting the magnetic force of the electromagnet 9 in the direction opposite to the magnetic force of the permanent magnet member, at fluctuation from a high-speed revolution to a low-speed revolution of the rotor by means of a controller 10, and also low-speed torque is increased by putting the magnetic force of the electromagnet 9 in the same direction as that of the magnetic force of the permanent magnet member, in the case that low-speed torque is required, such as in departure.
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