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Permanent magnetic generator of high-power density external rotor

A high power density, permanent magnet generator technology, applied to synchronous motors with stationary armatures and rotating magnets, electrical components, electromechanical devices, etc., can solve the problem of small output power or power density, affecting power or power density, Problems such as reducing the size of the permanent magnet generator to achieve the effects of reduced size, stable operation, and novel structural design

Inactive Publication Date: 2010-03-24
CRRC YONGJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention solves the problem that when the volume and weight of the existing permanent magnet generator are reduced to a certain extent, its output power or power density will be very small, and it is difficult to meet the requirements for use, that is, to solve the problem of reducing the volume of the existing permanent magnet generator , weight and the contradiction between affecting power or power density, providing a high power density external rotor permanent magnet generator

Method used

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  • Permanent magnetic generator of high-power density external rotor
  • Permanent magnetic generator of high-power density external rotor

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Embodiment Construction

[0011] The high power density external rotor permanent magnet generator includes a case 2, a stator assembly composed of a stator core 4 and a stator coil 3, and a rotating shaft 1 supported on the case by bearings 9 at both ends, and the stator assembly (using screws) is fixed on the case 2 On the side wall of the rotating shaft 1, a rotor bracket 6 whose inner surface is opposite to the outer surface of the stator core is sleeved, and a permanent magnet pole 5 is fixed on the inner surface of the rotor bracket. A driven shaft 11 is also supported (through bearings) in the case 2, a crank handle 10 is fixed on the shaft extension at one end of the rotating shaft 1, and the rotor bracket 6 is socketed with the rotating shaft 1 through the bearing 7. The driving gear 8 fixed on the rotating shaft, the driven gear 12 fixed on the driven shaft 11 and meshed with the driving gear 8, the transmission gear 13 fixed on the driven shaft and sleeved on the rotating shaft through bearing...

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Abstract

The invention can reduce the size and weight while keeping high power density of outer rotor. It comprises: a case, a stator assembly composed of stator iron core and stator coil, and a shaft whose two ends are secured on the case. The stator assembly is secured on the side wall of the case; a spider whose inner circle surface is opposite to the outer surface of the stator iron core is muff-coupled on the shaft; the pole of permanent magnet is secured on the surface of inner circle of the spider. On the motor there is a manually-driven mechanism.

Description

technical field [0001] The invention relates to a generator, in particular to a high power density outer rotor permanent magnet generator. Background technique [0002] Some specific application fields (such as the aerospace field) require that the permanent magnet generator must be small in size, light in weight, stable in performance, and must ensure the required power or power density. As the size of the existing ordinary permanent magnet generator decreases, the inner diameter of the stator will inevitably decrease, and the outer diameter of the rotor will also decrease accordingly. When the volume of the permanent magnet generator is reduced to a certain extent, due to the limitation of the internal space, it is impossible to fix the permanent magnet on the rotor that can guarantee the required output power or power density. In other words, when the volume and weight of the permanent magnet generator are reduced to a certain extent, its output power or power density wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K21/22H02K7/116H02K1/22
Inventor 周国聘刘荣强姬春霞聂杨江
Owner CRRC YONGJI ELECTRIC CO LTD
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