PREVIEW

   • Definition of permanent magnet motor lifespan

   • Factors affecting the lifespan of permanent magnet motors

   • Conclusion

A permanent magnet motor is a type of electric motor based on the interaction of permanent magnets and an electromagnetic field, and its principle of operation is based on the interaction of Ampere’s force and Lorentz’s force. In a permanent magnet motor, the magnetic field is provided by permanent magnets, while an electric current is passed through a coil to produce an electromagnetic field. The interaction of these two magnetic fields produces the torque that drives the motor. Permanent magnet motors are widely used in many fields due to their high efficiency, high power density and fast response.

With the wide application of permanent magnet motors, there is an increasing concern about their lifespan. The length of permanent magnet motor lifespan is directly related to the reliability and performance of the motor. If the lifespan of permanent magnet motors is too short, it will lead to frequent replacement and maintenance, which will increase the cost and labor hours. Therefore, it becomes crucial to understand the importance of permanent magnet motor lifespan.

Definition of permanent magnet motor lifespan

Permanent magnet motor lifespan is the period of time during which a motor is capable of operating normally under specific operating conditions. It is usually measured in hours or number of cycles, where a cycle consists of a complete run of the motor from start to stop. The definition of lifespan can vary, depending on the requirements of the specific application and operating environment. In some applications, lifespan can be defined as the point in time when the motor’s performance has declined to a certain level or fails to meet specific requirements.

The lifespan of a permanent magnet motor has a direct impact on its reliability and performance. A motor with a long lifespan means that it will continue to operate consistently and be able to meet the time period required by the design. In contrast, a motor with a shorter lifespan may experience frequent failures, resulting in increased downtime and increased repair and replacement costs.

In addition, the lifespan of a permanent magnet motor is closely related to its performance. As the lifespan increases, the motor’s performance remains stable, such as output power, efficiency and torque. On the contrary, a shorter lifespan may lead to performance degradation, such as reduced output power, lower efficiency, and increased torque fluctuations.

Therefore, it is crucial to use some methods and strategies to extend the lifespan of motors. By doing so, we can better utilize the advantages of permanent magnet motors, improve their reliability and performance, and bring more value to applications in various fields.

Factors affecting the lifespan of permanent magnet motors

Temperature: Temperature is one of the key factors affecting the lifespan of permanent magnet motors. Excessive temperatures will degrade the magnetic properties of the permanent magnet material and may lead to thermal expansion and thermal stress, ultimately shortening the lifespan of the motor. Therefore, it is very important to keep the motor within the design operating temperature range and take effective heat dissipation measures.

Axial Load: Axial load refers to the force applied to the motor in the axial direction, including static and dynamic loads. Excessive axial loads can lead to bearing damage and magnetic loss in permanent magnet motors, thus affecting lifespan. Axial loads need to be reasonably calculated and controlled during design and installation.

Number of cycles: The number of cycles of a motor is the number of times the motor is started and stopped. Frequent starting and stopping operations will increase the mechanical wear and electrical stress of the motor, thus shortening its lifespan. Therefore, the number of cycles should be taken into account in the application and appropriate control strategies should be adopted, such as reducing the frequency of starting and stopping or using a soft starter.

Work Load: The work load is the force and torque to which the motor is subjected during operation. Excessive working load will increase the mechanical stress and magnetic energy loss of the motor, which will shorten its lifespan. In design and operation, motor specifications need to be selected reasonably to ensure that they work within the rated load range.

Environmental conditions: Environmental conditions also have a significant impact on the lifespan of permanent magnet motors. For example, humid environments may lead to corrosion and insulation degradation, while dusty environments may lead to poor heat dissipation from the motor. Appropriate protective measures such as seals, dust covers and insulation protection are required during operation to extend the lifespan of the motor.

Maintenance and servicing: Regular maintenance and servicing is essential to extend the lifespan of permanent magnet motors. This includes cleaning the motor, lubricating bearings, checking electrical connections and insulation, etc. Regular preventive maintenance allows for early detection and resolution of potential problems, increasing the reliability and lifespan of the motor.

Conclusion

In conclusion, the lifespan of permanent magnet motors is a crucial factor affecting their reliability and performance. Proper operation and maintenance can extend the lifespan of these motors, reducing replacement costs, improving productivity, and minimizing downtime.

In this context, the TYB Series Standard Type Permanent Magnet Motor from ENPMSM stands out as a high-efficiency solution designed for longevity. The TYB Series adopts a high-efficiency NdFeB permanent magnet, eliminating excitation loss and reducing iron loss and stray loss. This results in an efficiency above the IE3 standard, increasing efficiency by 5-10% and improving the power factor by 10-15% or more.

Moreover, the TYB Series maintains high efficiency and power factor in the load range of 20% -120%, effectively reducing line losses and improving grid utilization. Its compact size, 35% smaller in volume and 40% lighter in weight compared to an asynchronous motor, facilitates mechanical miniaturization and space-saving.

With its high power factor, the TYB Series reduces the capacity of power receiving equipment and can reduce the current volume of equipment due to the high power factor, further enhancing its efficiency.

Therefore, investing in a high-quality permanent magnet motor like the TYB Series from ENPMSM can significantly extend the lifespan of your motor, improve its performance, and bring more value to your applications. Visit ourproduct to learn more about the TYB Series and explore our other permanent magnet motors.

https://www.enpmsm.com/