Slotless permanent magnet motor

A permanent magnet motor and stator technology, applied in electric components, electromechanical devices, electrical components, etc., to achieve the effect of small size, stable operation and good acceleration characteristics

Inactive Publication Date: 2006-04-05
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to provide a kind of slotless permanent magnet motor to solve the above-mentioned shortcoming of existing permanent magnet motor

Method used

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  • Slotless permanent magnet motor
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  • Slotless permanent magnet motor

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Embodiment Construction

[0018] The improvement of the slotless permanent magnet motor in this embodiment is mainly on the stator assembly. like figure 1 , figure 2 It is a structural diagram of the stator assembly of the practical slotless permanent magnet motor. The stator assembly includes a dummy 5, an iron core 6, and a stator winding 7. The dummy 5 is set outside the iron core 6, and the aforesaid Stator windings 7 are routed outside said dummy stator 5 . Described dummy 5 is made of insulating material epoxy glass cloth board. like image 3 is the stereogram of hypothetical sub-5, such as Figure 4 It is a perspective view of the iron core 6.

[0019] The stator assembly also includes a pressure ring 8 , which is sleeved on one end of the stator winding 7 , and fixes the dummy stator 5 and the stator winding 7 on the iron core 6 .

[0020] After the stator winding 7 is fixed on the said dummy 5 with the press ring 8, it is sealed firmly with glue in vacuum.

[0021] The present inventio...

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Abstract

The invention relates to a slotless permanent-magnet machine comprising stator components. The invention is characterized in that: said stator components comprise a false stator (5); an iron core (6) and a stator winding (7). Wherein, said false stator (5) is sheathed outside the iron core (6); said stator winding (7) is arranged of wire outside the false stator (5); and said false stator (5) is made from insulation material. The invention replaces the groove and tooth on the punching sheet of stator iron core with insulated false stator (5) to effectively solve the problem of slot electric machine as slot effect, hysteresis loss, eddy current loss and eddy current loss. The invention has higher load efficiency, continuous speed regulation, better acceleration property, higher overload capacity, smaller volume, stable operation, small torque fluctuation and simple manufacture process.

Description

technical field [0001] The invention relates to a permanent magnet motor, in particular to a slotless permanent magnet motor. Background technique [0002] At present, the permanent magnet motors on the market are all slotted motors, and their common problems are cogging, hysteresis loss, eddy current loss, magnetic saturation and other shortcomings. The traditional method of weakening the cogging effect uses helical teeth, which increases the difficulty of processing on the one hand, and cannot completely eliminate hysteresis loss on the other hand. The existing slotless motor windings are wound in a cylindrical or sleeve shape, the process is complicated, and the distribution is not as uniform and symmetrical as that of the slotted motor windings, and the torque fluctuation is relatively large. Contents of the invention [0003] The object of the present invention is to provide a slotless permanent magnet motor to solve the above-mentioned shortcomings of the existing p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/12H02K3/04H02K3/46
Inventor 徐学术郑家江张金涛
Owner BYD CO LTD
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