Reluctance motor

Magnetic core

Control (management)

Voltage

Rotor (electric)

Engineering

Induction motor

Spiral bevel gear

Synchronous motor

Magnetic circuit

Vibration

Computer science

Magnetic reluctance

Acoustics

Non-circular gear

Mechanical engineering

Thermodynamics

Physics

Torque

Switched reluctance motor

Magnetic gear

Automotive engineering

Artificial intelligence

Direct torque control

Control theory (sociology)

Electromagnetic coil

Eddy current

Electric motor

Magnet

Electrical engineering

IEEE Transactions on Industry Applications

Magnetic gears are expected to be a maintenance-free system with low-noise and low-vibration characteristics by a noncontact power transmission. However, conventional magnetic gears are not suitable for use with high-speed motors because the mechanical strength is weak due to the use of permanent magnets in a high-speed rotor. Additionally, the magnet eddy current losses in the high-speed rotor seriously decrease the gear's efficiency during a high-speed operation. This paper presents a novel reluctance magnetic gear that can realize the high-speed drive and high efficiency. The high-speed rotor of the proposed magnetic gear is constructed by only an iron core. Therefore, the structure is very simple and robust, adding that it is possible to rotate in the high-speed region. Moreover, the proposed magnetic gear achieves high efficiency in the high-speed region because the magnet eddy current loss in the high-speed rotor is not generated because no magnets are used. The downsizing of the system and a high efficiency power transfer are realized by applying the proposed reluctance magnetic gear.

A Novel Reluctance Magnetic Gear for High-Speed Motor