Energy saving stator assembly for electric motor

By using a combination of high-power copper and aluminum wire windings during motor startup, and by optimizing motor energy consumption in conjunction with an electrical control unit and frequency converter, the problems of high starting energy consumption and manufacturing cost of motors are solved, achieving steady-state energy saving and cost reduction.

CN122159555APending Publication Date: 2026-06-05陈丰田
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
陈丰田
Filing Date
2025-06-05
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing electric motors consume more energy during startup than during normal operation, and the use of copper wires in the stator windings increases manufacturing costs. Existing technologies cannot simultaneously reduce the manufacturing cost of electric motors and reduce energy consumption during operation.

Method used

An energy-saving stator assembly is adopted, which includes a first winding and a second winding. During startup, both are connected to an external power source to combine the output power. After reaching the predetermined speed, only the first winding is connected. Combined with an electrical control unit and a frequency converter, the energy consumption and cost of the motor are optimized.

Benefits of technology

Providing sufficient power during the motor startup phase to overcome load inertia, reducing power output during steady-state operation, significantly saving energy, reducing manufacturing costs and extending motor life.

✦ Generated by Eureka AI based on patent content.

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Abstract

An energy saving stator assembly for an electric motor includes a stator core and a stator winding unit. The stator winding unit includes a copper winding and an aluminum winding. The copper winding generally has a higher rated output power and is directly connected to a power source. The aluminum winding generally has a lower rated output power and is connected to the power source through a switching device. At start-up, the switch is closed so that the motor operates at the combined output power of both windings. When the motor reaches a set speed, the switch is opened so that the power source is connected only to the copper winding, which operates at its rated output power.
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