Winding stator with four winding layers for three-phase AC induction motor

Abstract

The invention discloses a winding stator with four winding layers for a three-phase AC induction motor, and the stator comprises a stator body, a first phase line group, a second phase line group, anda third phase line group. The inner wall of the stator body is provided with a plurality of winding grooves which are set along the axis of the stator and are arranged in an array in a peripheral direction. The number of winding grooves is 48, and the interiors of the winding grooves are sequentially provided with four line groove layers from the top to the bottom. The line groove layers are separated with each other through insulating paper, and each of the first, second and third phase line groups comprises four magnetic poles formed by a plurality of coils disposed in the winding grooves.The stator provided by the invention can provide a relatively flat torque in a wider speed range, achieves the power progressive increase in the whole operation range, improves the performances of a motor under the condition that the full automation is allowed, and is high in practicality.

Description

Technical field: [0001] The invention relates to a wound stator for a three-phase AC induction motor with a four-layer winding group, and relates to the technical field of electric motors. Background technique: [0002] The trend to design and manufacture fuel-efficient, low-emission vehicles has increased substantially over the past decade, with the automotive industry focusing its future on the development of hybrid and fully electric vehicles. This trend has in turn led to a focus on electric motors, whether as the sole source of propulsion (such as in all electric vehicles) or as a secondary propulsion source for combined propulsion systems (such as hybrid or dual electric vehicles), which require the ability to A motor that provides the required torque level and high-speed performance, while the existing motor cannot provide a relatively flat torque in a wide speed range, thus affecting the stability of the motor's actual operation and work efficiency. Invention conte...

AI Technical Summary

Problems solved by technology

This trend has in turn led to a focus on electric motors, whether as the sole source of propulsion (such as in all electric vehicles) or as a secondary propulsion source for combined propulsion systems (such as hybrid or dual electric vehicles), which requir

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