A Rare Earth Permanent Magnet Synchronous Motor Based on Signal Inverse Transmission

Abstract

The invention relates to a rare earth permanent magnet synchronous motor based on signal reverse transmission, comprising: a casing, a stator and a rotor; several stators are arranged on the inner wall of the casing, and gaps are arranged between adjacent stators, and the stators are Liquid metal, a magnetic isolation ring is arranged inside the gap; a rotor is arranged along the axial direction inside the housing, the rotor is fixed on the central shaft, and the central shaft is movably connected in the axial direction of the housing, so The central shaft can rotate, and the outer wall of the rotor is provided with several grooves along the circumference, and permanent magnets are arranged inside the grooves, and the grooves are parallel to the rotation center of the rotor; There is an air gap between them, and several cooling air holes are set through the rotor, and a cooling mechanism is arranged inside the rotor, the cooling can cool the rotor and the air gap, and the shape of the stator can be according to the The rotor temperature changes.

Description

Technical field [0001] The present invention relates to the field of motors, in particular to a rare earth permanent magnet synchronous motor based on signal inverse transmission. Background [0002] Rare earth permanent magnet synchronous motor, starting torque and overload capacity are higher than the three-phase asynchronous motor a power level, the ratio of the maximum starting torque to the rated torque can reach 3.6 times, while the general asynchronous motor is only 1.6 times, rare earth permanent magnet synchronous motor has no slip difference, no fundamental wave iron, copper consumption on the rotor, rare earth permanent magnet synchronous motor is bilateral excitation, and mainly rotor permanent magnet excitation, its power factor can reach or approach 1.0. The improvement of power factor, on the one hand, saves reactive power, on the other hand, it also reduces the stator current, reduces stator copper consumption, improves efficiency, the polar arc coefficient of rar...

AI Technical Summary

Problems solved by technology

[0004] During the rotation of the rotor of the existing rare earth permanent magnet synchronous motor, as the temperature rises, the stator cannot flexibly switch between the plane, concave surface or convex surface, and the temperature of the rotor and the air gap cannot be controlled by the cooling mechanism. The temperature of the rotor is controlled within a predetermined range to control the shape of the stator to change according to the predetermined shape. The operating power of the motor is low. The traditional rare earth permanent magnet synchronous motor only dissipates heat through air cooling, and its heat dissipation performance is poor.

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