Air-cooled noise-reduction stator core structure and traction motor
By designing a main air duct and branch air duct structure on the stator core of the air-cooled motor, the aerodynamic noise problem of the air-cooled motor is solved, achieving more efficient heat dissipation and noise reduction, which is suitable for traction motors in rail transit.
CN121840943APending Publication Date: 2026-04-10CRRC ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CRRC ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO LTD
- Filing Date
- 2024-10-09
- Publication Date
- 2026-04-10
AI Technical Summary
Technical Problem
Air-cooled motors have aerodynamic noise problems during operation, especially traction motors in rail transit, which seriously affect the acoustic environment and passenger comfort.
Method used
Design a wind-cooled noise-reducing stator core structure, including end and middle lamination modules to form a main air duct and branch air ducts. The overlapping middle laminations form a serpentine or resonant cavity air duct, which reduces aerodynamic noise and increases cooling airflow disturbance, thereby improving heat dissipation.
Benefits of technology
Without reducing ventilation and heat dissipation, it effectively reduces aerodynamic noise, improves motor reliability, reduces noise pollution, and enhances ride comfort.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN121840943A_ABST
Abstract
The invention belongs to the technical field of air cooling motor noise reduction, and particularly relates to an air cooling noise reduction stator core structure and a traction motor, a single end portion punching sheet module comprises more than one end portion punching sheet, the end portion punching sheet is provided with an air hole 1, a middle portion punching sheet module comprises more than one middle portion punching sheet 1 and more than one middle portion punching sheet 2, and the middle portion punching sheet module comprises more than one middle portion punching sheet 1 and more than one middle portion punching sheet 2. The first middle punching sheet is provided with a second air hole and a third air hole, the second air hole and the third air hole are communicated, the second middle punching sheet is provided with a fourth air hole and a fifth air hole, and the fourth air hole and the fifth air hole are separated. The middle punching sheet module is arranged between the two end punching sheet modules, the first middle punching sheet and the second middle punching sheet are arranged between the two end punching sheet modules in an overlapped mode, the first air hole, the second air hole and the fourth air hole are communicated to form a main air channel, and the third air hole and the fifth air hole are communicated to form a branch air channel. And the branch air duct is communicated with the main air duct through the communication part of the air hole II and the air hole III. According to the invention, the starting noise is reduced while the air-cooling heat dissipation effect is guaranteed, and the reliability is higher.
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