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Mixing excitation brushless DC start generator

A technology of DC starting and mixed excitation, which is applied to the rotating parts of the magnetic circuit, synchronous motors with stationary armatures and rotating magnets, synchronous machines, etc., which can solve the problems of complex structure, high cost and low efficiency of the starting and generating system , to achieve the effect of low loss, high efficiency and simple rotor structure

Active Publication Date: 2006-11-29
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This starter generator system has complex structure, low efficiency and high cost

Method used

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  • Mixing excitation brushless DC start generator
  • Mixing excitation brushless DC start generator
  • Mixing excitation brushless DC start generator

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Embodiment Construction

[0022] The hybrid excitation brushless DC starter generator of the present invention can be flexibly designed and adopt different numbers of pole pairs. Here, the embodiment is described in detail by taking four pairs of poles as an example.

[0023] Such as figure 1 As shown, the hybrid excitation brushless DC starter generator of this embodiment is composed of two sections, one section is a permanent magnet synchronous motor 18 with a radial structure or a tangential structure, and the other section is a hybrid excitation synchronous motor 19 with a radial structure or a tangential structure , it also includes a rotating shaft 15, an end cover 16, an end cover 61 and a casing 17; a permanent magnet synchronous motor 18 and a hybrid excitation synchronous motor 19 are coaxially installed in the casing 17, share the rotating shaft 15, and the permanent magnet synchronous motor 18 includes a stator And the rotor, the stator is made up of iron core 4 and armature winding 5, and ...

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Abstract

This invention discloses a mixed excitation brushless DC generator including a shaft, an end cover, another end cover, a shell, a permanent magnetic synchronous motor and a mixed excitation synchronous motor, in which, the magnetic synchronous motor and the excitation one are installed in the shell coaxially sharing the same shaft, the armature windings of the two motors are serial with an outlet at the middle. This invented motor can be either at the electromotion state or the generation state to realize brushless generation.

Description

1. Technical field [0001] The invention relates to a motor, in particular to a brushless direct current motor. 2. Background technology [0002] The starter generator utilizes the reversible principle of the electric motor. Before the engine works, the starter generator converts electrical energy into mechanical energy and works as a motor to drive the engine to rotate until the engine reaches a certain speed and enters the working state by itself, thus completing the starting process. After starting, the engine acts as a prime mover to drive the starter generator to rotate. At this time, the motor is correspondingly turned into a power generation operation state, and the mechanical energy is converted into electrical energy for output. It can be seen that the starter generator enables one motor to realize the dual functions of starting and generating, which simplifies the system structure and effectively reduces the system weight. Therefore, it is used in airplanes, autom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/20H02K21/00H02K21/12H02K29/06H02K29/08H02K1/27H02K1/12H02K3/28
Inventor 张卓然严仰光陈志辉王慧贞
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS