Reasons for reduced insulation performance
Environmental factors: Temperature and humidity are important environmental factors that affect the insulation performance of motors. High temperatures accelerate the aging of insulation materials and reduce their insulation strength, while high humidity may cause the insulation materials to become damp, thereby reducing insulation performance.
Material aging: As the use time increases, the insulation materials will gradually age and their insulation performance will decrease. This includes cracking, delamination or shedding of the insulation layer.
Mechanical damage: The motor may be subjected to mechanical shock or vibration during operation, which may cause damage to the insulation layer, such as cracks or breaks.
Electrical problems: Electrical problems such as overvoltage or arc discharge can also cause the insulation material to lose its protective effect, thereby reducing insulation performance.
The solutions are as follows:
Optimize design and manufacturing processes: Select more suitable insulation materials and use advanced manufacturing technologies to improve the insulation quality of the windings. For example, the use of high-performance impregnation varnishes can form a continuous and dense insulation structure to reduce partial discharge damage.
Regular maintenance and inspection: Regular inspection and maintenance of the motor, timely detection and repair of insulation layer damage, can effectively extend the service life of the motor and maintain its good insulation performance.
Use advanced insulation materials: The use of advanced insulation materials with higher heat resistance, mechanical toughness and electrical insulation, such as dielectric functional gradient materials (d-FGM), can significantly improve the electrical strength of the insulation structure.
Improve operating conditions: Control the operating environment of the motor, such as temperature and humidity, and avoid long-term operation in extreme environments to reduce the aging rate of the insulation material.
Through the above measures, the insulation performance of the motor can be effectively improved, its service life can be extended, and the stable and safe operation of the motor can be ensured.
