HYBRID SQUIRREL CAGE/ PERMANENT MAGNET MOTOR

• Main Author: LOUIS J. FINKLE
• Format: Patent
• Language: Chinese; English
• Published: 28.08.2018
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

The invention provides a hybrid squirrel cage/ permanent magnet motor that includes a fixed stator, an independently rotating outer rotor, and an inner rotor fixed to a motor shaft. In one embodimentthe outer rotor 20 has low inertia moment and includes angularly spaced first bars and permanent magnets located on the inner surface of the outer rotor; the inner rotor includes angularly spaced second bars and an inner magnetic flow barrier aligned with the second bars. The outer rotor is initially accelerated by cooperation of a rotating stator magnetic field with the first bars. As the outer rotor accelerates towards synchronous RPM, the permanent magnet rotating magnetic field and the second bars of the inner rotor cooperate so as to accelerate the inner rotor. When reaching a synchronousspeed, the rotating stator magnetic field penetrates the outer rotor and enters the inner rotor, thus coupling the two rotors and realizing efficient permanent magnet rotations. 本发明提供了种混合式鼠笼/永磁体马达，该混合式鼠笼/永磁体马达包括固定定子、独立旋转的外转子、