Permanent magnetic synchronous generator rotor for wind power generation

Abstract

The invention discloses a permanent magnetic synchronous generator rotor for wind power generation. The permanent magnetic synchronous generator rotor comprises permanent magnetic steel bars, a rotor core and a rotating shaft. The permanent magnetic synchronous generator rotor further comprises first hole slots and air slots. The permanent magnetic steel, the rotor core and the rotating shaft are successively distributed in a clinging manner from outside to inside in one circumferential axis. The rotating shaft is a solid shaft. Hot interference fit is utilized between the rotating shaft and the circumference which engages with the rotor core. Furthermore one side circumference of the rotor core is provided with a plurality of semicircular air slots. The central circumference between the outer diametric plane and the inner diametric plane of the rotor yoke is provided with a plurality of circular first hole slots. The number of the first hole slots is equal with that of the permanent magnetic steel bars. Furthermore the center of each first hole slot is in the central axis of each magnetic steel bar. The permanent magnetic synchronous generator rotor satisfies technological requirements of small weight, high control flexibility, simple structure, high vibration resistance, high efficiency and high reliability in a power generator in a wind power generation field.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a permanent magnet synchronous generator rotor for wind power generation. Background technique [0002] In recent years, with the rapid development of wind power generation system, its proportion in electric energy is increasing day by day. Wind turbines have strict requirements on grid-connected reliability, weight, and economic benefits. High reliability, light weight, and large output per unit volume are the basic requirements for various types of generators in the field of wind power generation. The high coercive force of rare earth permanent magnets, especially high intrinsic coercive force and high magnetic energy product can make rare earth permanent magnet synchronous generators have higher reliability and light weight under the same conditions, and are suitable for new power grid regulations Regarding the technical demand for wind turbines, do...

AI Technical Summary

Problems solved by technology

The high coercive force of rare earth permanent magnets, especially high intrinsic coercive force and high magnetic energy product can make rare earth permanent magnet synchronous generators have higher reliability and light weight under the same conditions, and are suitable for high power in the field of wind power generation The technical requirements of density generators, domestic research and application in this field started relatively late, the development task is tight and the technology is difficult

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