Low-speed large-torque permanent magnet direct drive motor stator winding end part fixing structure and binding process

A winding end, permanent magnet direct drive technology, applied to the shape/style/structure of winding insulation, windings, electric components, etc., to achieve good mechanical strength and electrical insulation strength, and improve reliability

Pending Publication Date: 2018-10-23
ANHUI WANNAN ELECTRIC MACHINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if the end of the stator winding is fixed by the conventional binding process, the deformation and displacement of the end winding cannot be avoided when the motor starts normally, which puts forward higher requirements for the fixing of the end of the stator winding

Method used

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  • Low-speed large-torque permanent magnet direct drive motor stator winding end part fixing structure and binding process

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Embodiment Construction

[0016] Attached below figure 1 , through the description of the embodiments, the specific implementation of the present invention will be further described in detail.

[0017] A binding process for a fixed structure at the end of a stator winding of a low-speed, high-torque permanent magnet direct drive motor, comprising the following steps:

[0018] Step A: After the wire embedding is completed, shape the wires at the end of the winding 10 so that the wires at the ends are close to each other and have a rounded shape. The inner diameter of the overall ring-shaped winding end 10 is larger than the inner and outer diameters of the stator core 20 smaller than the outer diameter of the stator core 20;

[0019] Step B: At the position where the winding end 10 is adjacent to the stator core 20, use a binding band 31 to wrap at least 2 turns along the circumferential direction of the winding end 10 and bind it to form an end hoop 311, and conduct a preliminary circumferential inspe...

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Abstract

The winding acquired by the low-speed large-torque permanent magnet direct drive motor stator winding end part binding process has the following fixing structure: the wire body of each turn of coil located outside a stator iron core wire embedding groove body is completely coated by an insulating material; the insulating material fills the place between adjacently-arranged heterogeneous coils; insulating paper is adopted in the embodiment of the invention, and in other embodiments, other insulating materials can also be used for filling; multiple turns of coils crossing adjacent two wire embedding groove wall end surfaces are bound and fixed by an insulating band; the periphery around the end part of the winding is coated with an end hoop; and a bridge crossing wire and a leading out wireform a ring-shaped wire harness to be fixed on the periphery of the end part of the winding. The winding end part has good mechanical strength and electrical insulation strength, and the reliability,the stability and the durance of the low-speed large-torque permanent magnet direct drive motor can be greatly enhanced.

Description

technical field [0001] The invention belongs to the technical field of motor manufacturing, and in particular relates to a fixing structure and a binding process for the end of a stator winding of a low-speed, high-torque permanent magnet direct drive motor. Background technique [0002] When the motor starts normally or is short-circuited or blocked, the end of the stator winding will be subjected to mechanical vibration and strong electromagnetic force. If the end winding of an ordinary motor is not firmly bound, deformation and displacement will easily occur, which will affect the working efficiency of the motor. The stator winding of the low-speed high-torque permanent magnet direct drive motor not only has thicker wire gauge, more turns, and high slot filling rate, but also has a large diameter of the inner circle of the stator core and a high number of poles in the stator winding, so the pole spacing of the stator winding Large, the gap at the R angle at the end of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/50H02K3/34H02K15/00
CPCH02K3/34H02K3/50H02K15/0043
Inventor 曹婷婷叶莹莹饶启明李志平秦炜卫红林
Owner ANHUI WANNAN ELECTRIC MACHINE
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