Study on the Composite Core of Amorphous Alloy and Oriented Silicon Steel for High Power Traction Motor
Amorphous alloy and oriented silicon steel have better magnetic properties than non-oriented sili-con steel which is commonly used in electric motors,but there are still technical barriers to their application in electric motors.In this paper,a composite tooth core structure suitable for high-power traction motors was proposed,in which oriented silicon steel was used as the tooth body and amorphous alloy was used as the tooth crown,so as to give full play to the advantages of the two materials.Moreover,the magnetic-mechani-cal coupling mathematical model and the loss analysis method of the composite tooth were established consid-ering the influence of mechanical stress and piezomagnetic effect and the correctness of the mathematical model was verified through experiments.It is found by comparing the two types of teeth that the teeth of typeⅠ are more suitable for large motors,and its iron loss is 37.2％smaller than that of type Ⅱ when the magnetic density of teeth is more than 1.8 T and the compressive stress is 20 MPa.
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维普
