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

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...

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

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