permanent magnet synchronous motors have been widely used in many fields due to their high efficiency and energy saving characteristics. however, in some special environments, such as high-temperature environments in industrial production, the reliability and performance of the motor will be affected. therefore, the high-temperature resistance performance of permanent magnet synchronous motors is very important for their application in high-temperature environments.
1、 the effect of high temperature on permanent magnet synchronous motors
in high-temperature environments, permanent magnet synchronous motors may experience permanent damage to their magnets, leading to a decrease in motor performance. at the same time, high temperatures can also cause damage to the insulation of the motor coil, leading to motor failure. therefore, in order for permanent magnet synchronous motors to operate normally in high-temperature environments, corresponding adjustments need to be made in design, material selection, manufacturing, and maintenance.
2、 improving the high-temperature resistance performance of permanent magnet synchronous motors
1. select permanent magnet materials with high temperature resistance
the magnet of a permanent magnet synchronous motor is its core component, and the thermal stability performance of permanent magnet materials directly affects its application in high-temperature environments. therefore, when designing and manufacturing motors, it is necessary to choose permanent magnet materials with high temperature resistance, such as ndfeb, smco, etc.
2. optimize the structure and heat dissipation of the motor
in high-temperature environments, the increase in temperature inside the motor can affect its performance and lifespan. in order to reduce the temperature of the motor, it is possible to optimize the structure and heat dissipation system of the motor, increase the air aperture of the motor, and improve the heat dissipation effect to ensure that the internal temperature is not too high.
3. choose high-temperature and heat-resistant insulation materials
the insulation material of the coil is also one of the important factors affecting the high-temperature resistance performance of the motor. when selecting insulation materials, it is necessary to choose high-temperature and heat-resistant materials, and determine the requirements for insulation materials and their appropriate thickness based on the operating environment and needs of the motor.
4. strengthen motor maintenance
the maintenance of the motor also affects its high-temperature resistance performance. regularly check the operation status of the motor, remove dust and foreign objects on the surface of the motor, and avoid affecting the heat dissipation and operation of the motor. at the same time, attention should also be paid to replacing aging or damaged components in a timely manner.
permanent magnet synchronous motor is an efficient and energy-saving motor, but its performance and reliability will be affected in high-temperature environments. therefore, improving the high-temperature resistance performance of permanent magnet synchronous motors is crucial. to operate normally in high-temperature environments, it is necessary to optimize the arrangement of motor design, material selection, manufacturing, and maintenance. effective measures include selecting permanent magnet materials with high temperature resistance, optimizing motor structure and heat dissipation, selecting high-temperature and heat-resistant insulation materials, and strengthening motor maintenance. by implementing these measures, the high-temperature resistance performance of permanent magnet synchronous motors can be enhanced, ensuring their operation and stability in high-temperature environments.
hengda motor has always been committed to the research and production of permanent magnet synchronous motors. our company has successfully developed a high-temperature resistant permanent magnet synchronous motor, which not only effectively meets the harsh operating conditions of printing and dyeing machinery, but also improves the motor efficiency by 4 percentage points compared to asynchronous motors of the same specification, with a power saving rate of over 6%.
when the ambient temperature is ≤ 55 ℃, the output shaft, flange, and other parts work continuously in harsh environments with temperatures up to 200 ℃. all bearings are made of high-temperature resistant special bearings, and the motor is filled with high-temperature resistant grease according to the specified cycle and brand. considering the convenience of adding grease to the motor on the host machine without disassembling the motor, bearing oil filling devices are specially designed on the front and rear end covers to ensure the service life of the motor, and all the motor materials are made of h-grade insulation materials, ensuring continuous production in the mechanical industry such as printing and dyeing. it has the characteristics of compact structure, reliable performance, convenience and durability.