Axial permanent magnet assisted radial reluctance high-speed motor with hybrid cooling structure

Abstract

The invention provides an axial permanent magnet assisted radial reluctance high-speed motor with a hybrid cooling structure, and relates to the technical field of motors. The motor provided by the invention is provided with an air cooling and water cooling structure on the basis of a dual group 6/4-pole switched reluctance motor structure. The motor comprises a casing, a front end cover, a rear end cover, a rotor and a stator, and is characterized in that an inter-tooth slot of the stator and the rotor form a cooling air channel, each end cover is provided with air discharging holes, the casing is provided with a cooling air inlet, a cooling water inlet pipe opening, a cooling water outlet pipe opening and a circumferential ring-shaped air guiding channel, the back of a ring yoke of the stator is provided with a spiral water channel pipe, and two ends of the rotor are provided with self-cooling fans respectively. According to the invention, a cooling structure combining the air cooling stator and the water cooling stator is adopted, and a water cooling function and an air cooling function are opposite in direction and complementary in cooling region, so that the stator and the rotor of the motor are effectively enabled to be reduced in temperature, a problem of difficult heat dissipation of the motor under a high-speed operating condition is avoided, thus long-term safe and stable running of the motor is ensured, and the service life of the motor is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to an axial permanent magnet assisted radial reluctance high-speed motor with a hybrid cooling structure. Background technique [0002] At present, new high-speed motors have become an important development direction of high-efficiency and energy-saving motors. Due to the limitation of its cooling structure, the existing high-speed motor adopts a self-contained fan cooling method (the rotating shaft drives the fan to blow the cooling air to the heat dissipation ribs on the outer surface of the casing and the end cover, and then the heat inside the motor will be taken away by the heat dissipation ribs). However, this cooling method cannot sufficiently remove the heat generated inside the motor, resulting in poor cooling performance and limited application range of high-speed motors. Moreover, the distribution of the rotating fluid field of a high-speed motor is relatively complex, an...

AI Technical Summary

Problems solved by technology

Due to the limitation of its cooling structure, the existing high-speed motor adopts a self-contained fan cooling method (the rotating shaft drives the fan to blow the cooling air to the heat dissipation ribs on the outer surface of the casing and the end cover, and then the heat inside the motor will be taken away by the heat dissipation ribs). However, this cooling method cannot fully take away the heat generated inside the motor, resulting in poor cooling performance and limited application range of high-speed motors

Moreover, the distribution of the rotating fluid field of a high-speed motor is relatively complex, and the temperature rise of the motor rotor and stator has become a restrictive factor that directly affects the long-term stable operation of the motor.

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