Three-stage brushless alternating-current synchronous generator and rotary rectifier

Abstract

The invention relates to a three-stage brushless alternating-current synchronous power generator and a rotary rectifier. The rotary rectifier comprises a positive electrode plate and a negative electrode plate, wherein the positive electrode plate and the negative electrode plate are two hollow discs with the same structure, three diode mounting holes are uniformly distributed in the positive electrode plate and the negative electrode plate, six first hollow rivet mounting holes are further evenly distributed in the positive electrode plate and the negative electrode plate, a diode is mountedin each diode mounting hole, cathodes of the three diodes are electrically connected with the positive electrode plate, anode ends of the other three diodes are electrically connected with the negative electrode plate, each diode is an avalanche type or Zener type diode, three V-shaped gaps are uniformly distributed on the peripheries of the positive electrode plate and the negative electrode plate, and are in one-to-one correspondence with the diode mounting holes of the corresponding electrode plates, and the rotary rectifier comprises three bus bar components uniformly distributed at the upper end of the reverse surface of the positive electrode plate. According to the invention, the ventilation and heat dissipation performance is good, the size is small and the weight is light; and theeffects of absorbing the magnetic field energy and inhibiting the voltage peak of the excitation system are rapid and effective.

Description

technical field [0001] The invention relates to the field of brushless AC synchronous generator manufacturing, in particular to a three-stage brushless AC synchronous generator and a rotary rectifier. Background technique [0002] No matter in the field of aviation power supply or in the field of industrial power generation, in the prior art, the synchronous alternator adopts a three-stage structure in order to realize brushless. Specifically, it can be divided into the main generator level, the rotating armature excitation generator and the rotating rectifier level, and the permanent magnet generator level, and the generators of the above-mentioned structures are all composed of an armature part and an excitation part. [0003] In order to meet the functions of the three-stage brushless AC synchronous generator, the rotating rectifier needs to meet the following requirements: [0004] 1. The rotary rectifier can rotate at high speed with the excitation part of the three-st...

AI Technical Summary

Problems solved by technology

[0011] a) Most of the existing rotary rectifiers have a semi-circular structure, the distribution of components is uneven, and the centrifugal force is uneven during the rotation process, which may easily cause the rectifier to move to one side and affect the service life of the rectifier;

[0012] b) There are many resistors and capacitive elements on the existing rotary rectifier, which leads to cumbersome fixing methods of the rectifier, complex structure, large volume, and poor heat dissipation;

[0013] c) The semi-annular structure of the rotary rectifier causes the positive and negative plates to not be on the same plane. The uneven height of the plane causes the length of the diode pins to be different. When rotating at high speed, the longer diode pins will be deformed by centrifugal force, thus reducing the diode and the rotary rectifier. reliability

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