Permanent-magnetic synchronous motor rotor

Abstract

The invention discloses a permanent-magnetic synchronous motor rotor. The permanent-magnetic synchronous motor rotor comprises a rotor framework, permanent magnetic steels and non-magnetic battens. The permanent-magnetic synchronous motor rotor is characterized in that: the permanent magnetic steels have special tile shapes and are arranged on the rotor framework in a surface sticking mode, and the non-magnetic battens are arranged between the two tile-shaped magnetic steels and arranged on the rotor framework by non-magnetic screws to avoid damage caused by a centrifugal force generated when the rotor rotates at a high speed; and meanwhile, the rotor is designed into a hollow rotor, a large gap is formed between an internal circle and an external circle of the rotor framework, the internal circle and the external circle of the rotor framework are connected with a connecting rib, and air convection formed when the rotor rotates is favorable for heat dissipation of the magnetic steels.

Description

technical field [0001] The invention relates to the technical field of a novel motor, in particular to a permanent magnet synchronous motor rotor with high power density and superior performance. Background technique [0002] Permanent magnet synchronous motors are widely used in daily life, industrial and agricultural production, aerospace, national defense, etc. Its advantages are more significant in the environment of small size, high power, low speed and high torque. However, the traditional permanent magnet synchronous motor rotor has the following two defects: First, the permanent magnet and the rotor are generally fixed by surface-mounting, and only a non-magnetic cylinder is placed between the outer surface and the inner circle of the stator core, or only a The surface of the permanent magnet is wrapped with non-woven fabric for fixing to increase the mechanical strength of the rotor at high speed, but the result of this is to increase the air gap between the stator...

AI Technical Summary

Problems solved by technology

However, the traditional permanent magnet synchronous motor rotor has the following two defects: First, the permanent magnet and the rotor are generally fixed by surface-mounting, and only a non-magnetic cylinder is placed between the outer surface and the inner circle of the stator core, or only a The surface of the permanent magnet is wrapped with non-woven fabric for fixing to increase the mechanical strength of the rotor at high speed, but the result of this is to increase the air gap between the stator and the rotor and reduce the magnetic field efficiency of the magnet; at the same time, Since the permanent magnet will generate heat during operation, when the heat exceeds its maximum operating temperature, it will cause permanent loss of magnetism, resulting in damage to the motor

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