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Hybrid-exciting brush-free claw-pole motor

A claw-pole motor and mixed excitation technology, which is applied to synchronous motors with stationary armatures and rotating magnets, magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc., can solve the problem that the air gap magnetic flux cannot be adjusted freely , low power density and efficiency, limited speed range, etc., to achieve the effect of improving power density, increasing main magnetic flux, and increasing magnetic energy product

Inactive Publication Date: 2007-07-18
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the serious leakage flux of the rotor claw poles of ordinary claw pole motors, and the air gap flux cannot be adjusted freely, its power density and efficiency are low, the starting torque is relatively small, and the speed regulation range is limited.

Method used

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  • Hybrid-exciting brush-free claw-pole motor
  • Hybrid-exciting brush-free claw-pole motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] As shown in Figure 1, the physical model of the hybrid excitation brushless claw pole motor is mainly composed of the following parts: stator, rotor claw pole 4, rotor yoke 9, shaft 5, thin permanent magnet sheet 11, permanent magnet sheet 12 , Armature winding 3 and field winding 8. The stator includes two parts, the outer stator and the inner stator, the outer stator includes the iron core 2 and the armature winding 3, the inner stator is composed of the field coil 8 and the field winding yoke bracket 10; the rotor part includes adjacent and staggered claw poles 4 1. The thin permanent magnet sheet 11 on the pole surface of the claw pole 4 and the permanent magnet sheet 12 between the claw pole 4. Each claw pole 4 has the same thickness, and the shape of the pole surface of the claw pole 4 is trapezoidal. Each claw pole 4 is fixed on the inner round non-magnetic stainless steel thin ring 13 through welding points to form a whole. In addition, the rotor is packaged wi...

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PUM

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Abstract

Iron core and armature winding constitute outer stator of the motor. Annular exciting winding and magnetic yoke bracket of the exciting winding constitute inner stator. Rotor is composed of claw pole, magnetic yoke of rotor, and shaft. A layer of thin permanent magnetism piece is inlaid on pole faces of each claw pole in rotor. Thickness of each claw pole is identical. Shape of pole face of claw pole is trapezoid. Through soldered points, each adjacent and staggered claw poles are fixed on inner circle of non-magnetic thin circular plate of stainless steel so as to form a whole. Rotor is encapsulated by cylinder prepared by non-magnetic stainless steel. Features of the motor are: high power density, high efficiency, high starting up torque and wide speed adjustable range.

Description

technical field [0001] The invention relates to an improved motor, especially a hybrid excitation brushless claw pole motor in the field of high performance and direct drive. Background technique [0002] Since the claw pole motor came out, it has been the preferred mode of automobile and aviation generators because of its simple structure, low cost and reliable operation. For decades, a lot of research work has been done on claw pole motors at home and abroad. However, most of them are claw pole motors with structures such as pure coil excitation or pure permanent magnet excitation, and most of them are aimed at improving the performance of the motor due to changes in its own parameters and structural dimensions, etc., changing the motor excitation method to improve motor operation Invention research on performance and working characteristics is relatively rare at present. Due to the serious leakage flux of the rotor claw poles of ordinary claw pole motors, and the air ga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/22H02K1/27H02K21/14
Inventor 林鹤云杨成峰
Owner SOUTHEAST UNIV
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