Rotor structure of magnetic suspension high-speed permanent-magnet motor
A technology of permanent magnet motor and rotor structure, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit rotating parts, magnetic circuit characterized by magnetic materials, etc., to achieve mature processing and manufacturing technology, good strength and simple structure Effect
Active Publication Date: 2017-01-04
BEIHANG UNIV
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Problems solved by technology
In order to achieve high-speed and stable operation of the motor, ensure the integrity of the rotor assembly at high speed, and prevent the irreversible demagnetization of the rotor permanent magnet at high temperature, it is necessary to improve the existing technology to solve the technical shortcomings
Method used
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Embodiment Construction
[0020] Such as figure 1 As shown, the present invention is a magnetic levitation high-speed permanent magnet motor rotor structure, which mainly consists of a main shaft (1), an axial thrust disc (2), a radial magnetic bearing core lamination A (3), an alloy sheath (4 ), a permanent magnet (5), a radial magnetic bearing core stack B (6), a threaded ring (7) and a load shaft (8); the main shaft (1) is provided with an axial thrust disc (2) , the radial magnetic bearing core lamination A (3) is pasted on the main shaft (1), the upper end surface is matched with the shaft shoulder of the main shaft (1), the lower end surface is connected with the alloy sheath (4), and the alloy sheath (4 ) is provided with a boss at the middle position, the upper end of the alloy sheath (4) is connected with the main shaft (1), the lower end of the alloy sheath (4) is connected with the permanent magnet (5), and the middle protrusion of the main shaft (1) and the permanent magnet (5) The platfor...
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A rotor structure of a magnetic suspension high-speed permanent-magnet motor comprises a main shaft, a magnetic bearing iron core laminated layer, a high-strength alloy sheath, a rare-earth permanent magnet and a load shaft, wherein the magnetic bearing iron core laminated layer is formed by laminating silicon steel sheets, the high-strength alloy sheath is a nickel-chrome iron alloy material which can conduct electricity and cannot conduct magnetism conduction, the permanent magnet is a high-energy density samarium cobalt rare-earth permanent-magnet material, the sheath and the permanent magnet are assembled in an interference fit manner, and an air gap is reserved between the permanent magnet and the main shaft. The high-speed permanent-magnet motor rotor adopts a solid permanent-magnet structure; compared with a surface-mounted permanent-magnet rotor structure, the rotor structure has the advantages that the rotor strength and the motor energy density are enhanced, and the motor efficiency is improved; and by adoption of the self-cooling and high-strength alloy sheath, rigidity is provided for a rotor assembly, a phenomenon of assembly loosening of a surface-mounted rotor under the function of high-speed centrifugal force is thoroughly changed, and a risk of irreversible demagnetization of the permanent magnet due to overheating is prevented.
Description
technical field [0001] The invention relates to a magnetic levitation high-speed permanent magnet motor rotor structure, in particular to a high-energy-density high-speed permanent magnet motor. Background technique [0002] Due to the advantages of high speed, high power density, simple structure, small size, and reliable operation, high-speed permanent magnet motors can be used in industrial equipment such as blowers and compressors to achieve high-speed direct drive. It has a remarkable effect on improving the reliability of the whole machine system and reducing fuel consumption and pollutant discharge. The rotor system of the high-speed permanent magnet motor is the premise of realizing the safe and reliable operation of the whole motor, and the structural design of the rotor assembly is also one of the core technologies in the design of the high-speed permanent magnet motor. [0003] The rotor of high-speed permanent magnet motor often runs at tens of thousands or even...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H02K1/27H02K1/32H02K7/00H02K1/28H02K1/02
CPCH02K1/02H02K1/2706H02K1/28H02K1/325H02K7/003H02K2213/03
Inventor 韩邦成黄梓嫄郑世强
Owner BEIHANG UNIV