2 Advantages of Amorphous Ribbon in Motor Core Manufacturing

 With the development of material technology and core processing technology, the problem of amorphous alloy core processing is gradually solved. Using amorphous alloy materials to replace silicon steel sheet materials to manufacture transformer cores, the no-load loss of the transformer can be reduced by nearly 70%. However, because the manufacturing process of the motor core is more complex than that of the transformer, and the amorphous alloy material has the shortcomings of thin ribbon, high hardness, and brittleness after annealing, it is difficult to directly apply the traditional stamping process to the manufacture of amorphous alloy motor core with the help of direct spray ribbons, the performance advantages of amorphous alloy cores have been highlighted.


Due to the superior low loss density characteristics of the amorphous alloy material, the loss caused by the carrier harmonics of the inverter power supply in the amorphous alloy motor stator core is still lower than that of the silicon steel sheet motor, and its value is about 36.5% of the silicon steel sheet motor, so amorphous The rate of change of the current waveform of the alloy motor is higher than that of the silicon steel sheet motor. Since both motors adopt surface mount rotor structure, the permanent magnets are directly exposed to the air gap. The harmonic components of the high frequency magneto motive force in the air gap caused by the carrier harmonic current supplied by the inverter produce a large amount of harmonic components on the surface and inside of the permanent magnets. Eddy current loss. Therefore, the permanent magnet eddy current loss caused by the frequency converter carrier harmonics in the amorphous alloy motor is much higher than that of the silicon steel sheet motor, and its value is about twice that of the silicon steel sheet motor. This gap can be significantly reduced after adopting different production processes.


SAT Amorphous is a high-quality supplier of iron-based amorphous and nanocrystalline ribbons, with an annual production capacity of 1,000 tons, serving customers in 15 countries around the world, and is a strategic supplier of ABB, SE, SMA and other world-renowned companies. Hope to establish long-term cooperative relations with our customers for mutual benefit.


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