Application of rare earth permanent magnet in DC speedless motor

Application of rare earth permanent magnet in DC speedless motor
The acquisition and application of electric energy is an important sign of the progress of human society. Electric energy is an energy form that cannot be left in modern society. Electric energy is widely used in any industry. The most common form of the application of electric energy is to convert electric energy into mechanical energy. The means of conversion depends on the application of electric motors. The conversion of electric energy into mechanical energy by the motor is related to the full use of electric energy, the efficiency and operation of the driven equipment. Therefore, people have been developing and developing motors that meet the requirements. Reviewing the development of motor, people have been striving for the progress of motor from DC motor to AC motor. Until the appearance of NdFeB permanent magnet, people began to produce rare earth permanent magnet motors with the support of advanced materials, which also led to the improvement of relevant industrial products, and made the electromechanical integration reach a new level.
Through years of research and application of rare earth permanent magnet motors and control systems, China Academy of Launch Vehicle Technology has successfully applied rare earth permanent magnet motors to rockets and missiles. In line with the strategic policy of "building a military institute and prospering a civilian institute", Beijing Wanyuan Industrial Co., Ltd. will pay more attention to the development of its own scientific research and production advantages, constantly explore and develop new fields, and apply mature military high-tech to the civilian industry. The company will organize a strong scientific research team and invest a lot of manpower and material resources in the development of rare earth permanent magnet wind turbines At the same time as the rare-earth permanent magnet traction motor for light rail and the rare-earth permanent magnet motor for oil exploitation, the high-power rare-earth permanent magnet DC brushless speed regulating motor is developed and produced.
The rare earth permanent magnet brushless DC speed regulating motor is the product of the combination of modern material science, electronic power science and motor control theory. The rare-earth permanent magnet motor uses rare-earth permanent magnet material to generate magnetic field, replacing the magnetic field generated by current excitation of traditional motor, which makes the rare-earth permanent magnet motor have the remarkable characteristics of simple structure, reliable operation, small volume, light weight, low loss, high efficiency, and flexible appearance and size of the motor, so the rare-earth permanent magnet motor has developed rapidly in recent years. Due to the rich rare earth resources in China and the rapid development of rare earth permanent magnet in China, the product quality of rare earth permanent magnet materials has been continuously improved and the cost and price have been continuously reduced, which has laid a solid foundation for the manufacture of high-power rare earth permanent magnet motors, making the rare earth permanent magnet motors we have developed have certain competitive advantages in the domestic and foreign markets.
China is now the largest elevator consumer in the world. With the continuous development and improvement of China's national economy, the demand for high-performance elevators is nearly expanding. But now, high-speed and high-performance elevator mainframes are basically imported. In order to develop China's rare earth resources and expand the application market of rare earth permanent magnet in China, our company's technology innovation center is vigorously developing rare earth permanent magnet DC brushless speed regulating motor. Its system performance is in the leading position in the world, which is about 40% less energy than the traditional elevator system. It is an ideal replacement product for domestic elevator host production. The outstanding feature of the system is that the speed range is wide and will reach 1000:1 or more, which is higher than the current advanced AC VVVF frequency conversion system. The start, operation and control of the elevator are more stable and can achieve high-precision control. The motor has the characteristics of low speed, large torque, high power factor, small size, low requirements for supporting environment and obvious energy-saving effect. The working noise and vibration of the whole elevator system are very small, and the operation is stable, meeting the requirements of human comfort. Due to the inherent characteristics of permanent magnet motor, it has self-locking ability in case of sudden power failure, which makes elevator operation more safe and reliable. Because of the characteristics of low speed and large torque, the main structure of the elevator is simple and easy to maintain. The development of this product will bring China's elevator industry into a new historical stage.