Novel brushless exciter rotor support assembly used for aircraft generator

Abstract

The invention belongs to a design technology of aircraft motors, and relates to an improvement of an aircraft generator exciter rotor structure. An exciter rotor support assembly is formed by a rotorsupport [1], an insulation board [2], two rotation rectification assemblies [3] and a plurality of fastener assemblies [4] and characterized in that each rotation rectifying tube assembly [3] comprises three rotation rectifying tubes [3a] in the same PN junction direction, the rotation rectifying tubes are fixed on one rotation radiator [3b] through nuts, axial air channels are reserved between radiating fins of the rotation radiator [3b], the PN junction directions of the rotation rectifying tubes [3a] on the two rotation rectification assemblies [3] are opposite, the rotation rectifying tubeassemblies [3] and the insulation board [2] are fixed on the rotor support [1] together through the fastener assembles [4], each fastener assembly [4] is formed by a bolt [4a], an insulation gasket [4b], an insulation bushing [4c] and a nut [4d], and the rotation rectifying tube assemblies [3] are insulated from the rotor support [1] through the insulation board [2], the insulation gaskets [4b] and the insulation bushings [4c]. According to the rotor support assembly, the structure is simple, the heat radiation efficiency is high, and the reliability is high.

Description

technical field [0001] The invention belongs to the aviation motor design technology and relates to the improvement of the rotor structure of the brushless exciter of the aviation three-stage generator. Background technique [0002] The aviation three-stage generator consists of a main generator, a brushless exciter and a permanent magnet auxiliary exciter. The stator of the brushless exciter is a magnetic pole, with an excitation winding on it, and a DC or AC excitation current. The rotor of the brushless exciter is an armature with armature windings on it. The armature winding generates three-phase alternating current, which is rectified into direct current through the rectifier bridge formed by the rotating rectifier tube on the exciter rotor, and supplied to the main generator rotor excitation winding. [0003] The rotating rectifier is the weak part of the aviation three-stage generator, and special attention should be paid to its reliability in terms of stress, loss ...

AI Technical Summary

Problems solved by technology

However, their rotating rectifiers can only dissipate heat by themselves in contact with the airflow, so they have the disadvantage of difficult heat dissipation, which reduces the reliability of the aero-generator

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