Breakthrough: China has developed a rare earth permanent magnet coreless motor! Foreign surprise

According to the promotion of on-site meeting of rare earth permanent magnet ironless motors sponsored by the National Development and Reform Commission in Shenzhen, a rare earth permanent magnet ironless motor developed by Shenzhen Antoshan Specialty Electromechanical Co., Ltd. has achieved a major breakthrough in the design of ironless core motors. Filled the domestic blank. Foreign countries are greatly surprised.

The rare earth permanent magnet coreless motor is a new type of special motor that represents the future development direction of the motor industry. It uses coreless, brushless, non-magnetic damping, rare earth permanent magnet power generation technology, and changes the traditional use of silicon steel sheet and winding motor. Stator structure, combined with independent research and development of electronic intelligent frequency conversion technology, the motor system efficiency increased to 95%. At present, Shenzhen Antuoshan Special Electromechanical Co., Ltd. has spent several hundred million yuan to build three iron coreless motor automated production lines, and plans to design and build 40 automatic production lines in the next 3-5 years to achieve the production of 400,000 units of different power motors per day. scale.

Academician experts argued that the rare earth permanent magnet coreless motor is a major innovation, technically achieved a 'three major' breakthrough, first, compared with the traditional radial magnetic field structure design, the use of axial magnetic field structure design, a substantial Increase power density and torque volume ratio. The second is the use of new winding technology, high-pressure precision die-casting molding and polymer materials, effectively reducing the winding copper loss. The third is not to use silicon steel sheet as the stator and rotor core material, eliminating the magnetic damping and iron loss, reducing the driving power and reducing the iron loss heat source.

Zhao Jiarong, Director of the Department of Circumstances of the National Development and Reform Commission, said that the prospects for the development of rare earth permanent magnet ironless core motors are promising. According to preliminary calculations, if one-third of the new motors are replaced by this new type of product, this will save nearly 50 billion kilowatt-hours of electricity each year, saving 500,000 tons of silicon steel sheets and 20,000 tons of copper, which can create nearly ten billion yuan. The output value, economic benefits and social benefits are considerable. Therefore, the National Development and Reform Commission will work together with related departments to promote the organization and application of demonstrations, promotion of financial subsidies, and innovation and promotion mechanisms.