Why does the motor winding temperature rise fail?

The performance and life of an electric motor are significantly affected by its operating temperature. One of the key factors leading to unqualified motor winding temperature rise is the interaction between stator current and stator copper losses. When the stator current increases, copper losses increase due to resistance in the windings. This phenomenon can generate excessive heat, causing the temperature of the motor windings to exceed acceptable limits.

In addition, the design and condition of the air ducts within the motor play a crucial role in heat dissipation management. Efficient air ducts enable better cooling and help reduce temperature rise caused by stator copper losses. Conversely, if the air ducts are blocked or poorly designed, airflow will be severely impeded, resulting in insufficient cooling. This will lead to a compound effect, that is, the heat generated by the stator current and copper losses cannot be effectively dissipated, further exacerbating the temperature rise.

Insufficient cooling can lead to a range of problems, including insulation breakdown, reduced efficiency, and ultimately motor failure. Therefore, stator current and gas path conditions must be monitored to ensure that the three phase induction ac motor is operating within its thermal limits. Regular maintenance and design optimization help prevent motor winding temperature rise, ensuring reliable performance and extending motor life.

The relationship between stator current, copper losses, and gas paths is critical to understanding why motor winding temperature rise may fail. Addressing these factors through proper design and maintenance can significantly improve motor reliability and efficiency.

The air duct is a crucial element influencing the performance of motor products, particularly in terms of temperature rise and noise performance. However, the majority of manufacturers lack comprehensive knowledge of the design and control of the air duct. For instance, if the casting base solution is directly migrated to the box base solution, the matching compliance of the mechanical dimensions may not necessarily guarantee the consistency of the air ducts. At Wolong, we conduct extensive research and development to address this issue and are dedicated to producing high-quality electric motors.