High-speed permanent magnet motor rotor with solid magnetic steel

Abstract

The invention belongs to the technical field of a motor, relates to a high-speed permanent magnet motor rotor and particularly relates to a high-speed permanent magnet motor rotor with the solid magnetic steel. The high-speed permanent magnet motor rotor includes the magnetic steel (3), a left shaft end (1), a right shaft end (4) and a protective sleeve (2). The high-speed permanent magnet motor rotor is characterized in that through reducing the outer diameter of the rotor and reducing linear velocity, increase of the rotational speed of the motor is facilitated, the linear velocity is proportional to the outer diameter of the rotor, so the linear velocity can be effectively reduced through reducing the outer diameter of the rotor, the high-speed permanent magnet motor rotor adopts the solid magnetic steel and is composed of only four parts, the structure is simple, the size is small, power density is high, structural stability is good, and the motor rotor is suitable for motor high-speed operation and motor power increase. The high-speed permanent magnet motor rotor has advantages of simple structure, the small outer diameter of the rotor, low linear speed, high mechanical strength, good structural stability and high power density, and increase of the motor rotation speed and the power is facilitated through the high-speed permanent magnet motor rotor.

Description

technical field [0001] The invention belongs to the technical field of motors, and relates to a high-speed permanent magnet motor rotor, in particular to a high-speed permanent magnet motor rotor with solid magnetic steel. Background technique [0002] The permanent magnet motor rotor is generally made of silicon steel sheets, and the silicon steel sheet is embedded with magnetic steel to form a salient pole or hidden pole rotor structure. This structure leads to a larger outer diameter of the rotor and a higher linear speed at high speeds, which is not conducive to improving Motor speed; some use segmented magnetic steel with complex structure. When the motor speed is high, a large centrifugal force is generated, which affects the stability of the rotor and is not conducive to increasing the motor speed and power. Contents of the invention [0003] Purpose of the present invention: to construct a rotor structure of a permanent magnet motor, reduce the outer diameter of th...

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Problems solved by technology

[0002] The permanent magnet motor rotor is generally made of silicon steel sheets, and the silicon steel sheet is embedded with magnetic steel to form a salient pole or hidden pole rotor structure. This structure leads to a larger outer diameter of the rotor and a higher linear speed at high speeds, which is not conducive to improving Motor speed; some use segmented magnetic steel, with complex structure, when the motor speed is high, a large centrifugal force is generated, which affects the stability of the rotor and is not conducive to improving the motor speed and power

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