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Motor

A technology of electric motor and hysteresis, applied in the field of electric motor, can solve the problems of low operation efficiency of electric motor

Inactive Publication Date: 2007-09-19
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to this, the motor runs inefficiently

Method used

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Embodiment Construction

[0019] Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[0020] Hereinafter, a motor according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0021] Fig. 3 is a schematic diagram of an electric motor according to an embodiment of the present invention. FIG. 4 is a graph showing the torque characteristic versus speed variation of the motor shown in FIG. 3 . In this embodiment, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals and will not be described in detail.

[0022] As shown in FIGS. 3 and 4 , the motor according to the embodiment of the present invention includes: a stator 10 having a plurality of teeth 11 forming a plurality of slots 12 , a tooth 11 formed at the center by the ends of the plurality of teeth 11 The through hole 13, and the coil (not shown) that is ...

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PUM

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Abstract

A motor is disclosed. A motor according to the present invention includes: a stator including a plurality of teeth that forms a plurality of slots, a through hole formed in the center by the tips of the plurality of teeth, and a coil that is wound around the teeth and generates rotating magnetic field by applying electricity; a rotator that is rotatably inserted in the through hole and has an axle hole into which a rotating axle is inserted and a plurality of permanent magnets disposed around the axle hole; and a hysteresis band that is disposed on an outer periphery of the rotator. According to the present invention, since the hysteresis band is disposed on the outer periphery of the rotator, the motor can overcome the braking torque by the permanent magnets in transition state and starts normally and generates magnetic flux in normal operation with synchronous speed, thus increasing the efficiency of the motor.

Description

technical field [0001] The present invention relates to an electric motor, and more particularly to a high-efficiency electric motor capable of overcoming the braking torque produced by permanent magnets in a transient state and normally starting, and capable of producing magnetic flux. Background technique [0002] FIG. 1 is a schematic diagram of a motor according to the prior art, and FIG. 2 shows a graph showing the relationship between the torque characteristic and the speed change of the motor. [0003] Referring to FIG. 1, the motor according to this prior art includes: a plurality of teeth 11 forming a plurality of slots 12; a through hole 13 formed at the center by means of the ends of the plurality of teeth 11; a stator 10 , has a coil (not shown) wound around the tooth 11, and the coil generates a rotating magnetic field when energized; the shaft hole 22 is rotatably embedded in the through hole 13, and the shaft hole is also inserted into the shaft ( not shown ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/12H02K1/27H02K1/16H02K3/12
CPCH02K19/106H02K1/276H02K1/27
Inventor 沈长昊李成浩金在民崔在学朴镇洙
Owner LG ELECTRONICS INC
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