关键词: 牵引电机, 冷却性能, 气候环境, 优化措施

Abstract: Taking the forced air-cooled traction motor as an example,the climate environment was analyzed that caused the cooling performance of the motor to decline, andoptimization measures were put forward. The analysis showed that the physical properties of the cooling medium changed with the temperature and air pressure, so the influence of high temperature, high cold and high altitude on the cooling characteristics should be considered in the design of the motor cooling system. The problems such as air inlet filtration, air hole plugging, outlet back flow, and the wear of the insulating material caused by the cooling medium containing impurities under the action of rotating centrifugal force should be considered in the areas with high degree of environmental pollution. The key to ensure the operation of the line is to fully consider the difference between the test environment and the operation environment during the design. The conclusions have certain reference value for the design of motor in special environment.

Key words: traction motor, cooling performance, climate environment, optimization measures