Permanent magnet generater rotor

Abstract

This invented permanent-magnet generator rotor is composed of: a rotor body, an axle of rotor, magnetic field pole set and sealing cover. The rotor body has two channels parallet with axle-line. Outer S-pole and inner N pole are placed respectively into above-said two channels. The ends of the poles are sealed by cover. In this invention, the arrangement of magnets is changed compared with prior art products, so, solving problems of difficult of erection, keeping an equal magnetic flux of S, N poles. This invention has advantages of: high efficiency, high electricity quality, power density of the generator being increased by 15%, output current being increased by 15%, energy-saving, aberration rate of load-wave being no more than 4%, structure being of simple, long service life.

Description

technical field [0001] The invention relates to a permanent magnet generator rotor. Background technique [0002] The traditional generator rotor uses the coil winding to generate the magnetic field output current under the action of the transmission force under the excitation of the excitation winding or the capacitor. However, since the advent of the rare earth sintered magnetic tile, it has been a public technology to replace the rotor coil winding with the rare earth sintered magnetic tile to generate the output current. Practice has proved that the arrangement state of the magnetic field and the relative degree of the magnetic flux of the S and N poles determine the performance of the generator power and the peak value of the waveform. Because there is no reasonable method at home and abroad to solve the attachment method of the magnetic block on the rotor body For example, some cylindrical magnets are directly set on the rotor shaft. Due to the rigid contact, the magne...

AI Technical Summary

Problems solved by technology

[0002] The traditional generator rotor uses the coil winding to generate the magnetic field output current under the action of the transmission force under the excitation of the excitation winding or the capacitor. However, since the advent of the rare earth sintered magnetic tile, the use of the rare earth sintered magnetic tile to replace the rotor coil winding to generate the output current has long been a public technology. Practice has proved that the arrangement state of the magnetic field and the relative degree of magnetic flux between the S and N poles determine the performance of the generator power and the peak value of the waveform. Because there is no reasonable means at home and abroad to solve the method of attaching the magnetic block to the rotor body For example, some cylindrical magnetic blocks are directly set on the rotor shaft. Due to the rigid contact, the magnetic blocks are fragile during application, or the gap between the stator and rotor is extremely small, due to insufficient processing accuracy or non-standard assembly process. The exposed magnetic block rubs against the inner diameter of the stator and generates heat to reduce the magnetic properties, degrade the magnetic field, or change the magnetic flux caused by changing the shape of the magnetic block due to the assembly method, which will affect the electrical quality of the generator; non-magnetic screws are also used to fix the magnetic tiles On the rotor core, the position it occupies reduces the magnetic conduction area of ​​the magnetic pole core, making the magnetic field distribution on the surface of the core uneven, resulting in a waveform distortion rate of ≥ 20%, which directly affects the performance of the generator, and makes the force and electricity of the generator The loss is about 30%

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