High-power high-speed permanent magnet generator rotor surface-mounting type fixing permanent magnet structure and method

Abstract

The invention discloses a high-power high-speed permanent magnet generator rotor surface-mounting type fixing permanent magnet structure and method and belongs to the field of permanent magnet generator devices and manufacturing methods. The high-power high-speed permanent magnet generator rotor surface-mounting type fixing permanent magnet structure and method is characterized in that a plurality of bosses (5) used to position permanent magnets (3) are uniformly distributed on the surface of each permanent magnet area along the axial direction, a plurality of spliced permanent magnets (3) are fixed on the surface of each permanent magnet area through high-strength adhesives, two neighboring permanent magnets (3) in circumferential direction are separated and positioned through the bosses (5), the permanent magnets (3) are fastened with rotor cores (2) together through fastening bolts (7), carbon fiber binding belts (8) are wound on the outer surfaces of the permanent magnets (3), and rotor baffles (6) are fixedly arranged on two ends of the permanent magnets (3) in the axial direction. The high-power high-speed permanent magnet generator rotor surface-mounting type fixing permanent magnet structure and method enables the permanent magnets to overcome centrifugal force, maintain fixed and firm and work safely.

Description

technical field [0001] The invention discloses a surface-mounted fixed permanent magnet structure and method for a rotor of a high-power high-speed permanent magnet generator, belonging to the field of permanent magnet generator equipment and manufacturing methods, and specifically relates to a permanent magnet fixing structure and a fixing method of a high-power high-speed permanent magnet generator. Background technique [0002] The high-power high-speed permanent magnet generator with a generator speed of up to 7000 rpm and a power of 360kW is developed for the maglev magnetodynamic wind power storage power station. It is a new type of wind power generation device with high generator efficiency and energy saving. , green and environmental protection, and can also be applied to industrial equipment, such as fans, water pumps, printing machinery, textile machinery, petroleum, chemical industry, metallurgy, etc. The general permanent magnet generator speed does not exceed 300...

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Problems solved by technology

[0002] The high-power high-speed permanent magnet generator with a generator speed of up to 7000 rpm and a power of 360kW is developed for the maglev magnetodynamic wind power storage power station. It is a new type of wind power generation device with high generator efficiency and energy saving. , green and environmental protection, and can also be applied to industrial equipment, such as fans, water pumps, printing machinery, textile machinery, petroleum, chemical industry, metallurgy, etc. The general permanent magnet generator speed does not exceed 3000 rpm, and the traditional wind turbine speed is generally No more than 1000 rpm, because the high-power high-speed permanent magnet generator speed can reach 7000 rpm, and the outer diameter of the rotor is pasted with permanent magnets. When rotating at high speed, the centrifugal force of the permanent magnets is very large, reaching 5.9MPa, which is higher than The centrifugal force of a large turbogenerator is much greater, so during normal operation, there are factors such as the permanent magnet not being firmly fixed and affecting work safety.

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