Amorphous-silicon-steel composite stator core for radial magnetic field motor and manufacturing method thereof

Abstract

The invention discloses an amorphous-silicon-steel composite stator core for a radial magnetic field motor and a manufacturing method thereof. The composite stator core comprises silicon steel plate layers and amorphous alloy plate layers which are alternately stacked and are then solidified into a block body. The manufacturing method comprises steps of composite material roll making, cross cutting and stacking, annealing, paint dipping and solidification, and processing. The core has properties of low loss, high saturation magnetic induction intensity and high mechanical strength.

Description

technical field [0001] The invention belongs to the field of magnetic circuit components of electric motors, and in particular relates to a stator core made of amorphous-silicon steel compound for a radial magnetic field motor and a manufacturing method thereof. The stator core is suitable for applications in the frequency range of 50Hz to 3kHz Radial field motor. Background technique [0002] As the most important power equipment, the motor is widely used and consumes a lot of energy. The electricity consumption of motors in my country is about 60% of the total electricity consumption of the whole society. In 2015, it exceeded 3.3 trillion hours. It can be seen that reducing motor loss and improving motor efficiency is of great significance to energy saving and emission reduction. [0003] Compared with traditional silicon steel materials, amorphous soft magnetic materials have very low loss due to their low coercive force, high resistivity (about 3 times that of silicon s...

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Problems solved by technology

However, this method will have certain problems in practical applications. First, the silicon steel core and the amorphous iron core are unevenly distributed in the axial direction, which may easily cause wear of rotating parts such as bearings due to uneven radial electromagnetic force distribution when the motor rotates at high speed. Problem; secondly, the alveolar structure of the waste silicon steel core is designed according to the electromagnetic properties of the silicon steel core. If the characteristics change and the original silicon steel core structure design continues to be used, there will inevitably be a mismatch between the soft magnetic properties of the iron core and the electromagnetic scheme of the motor. Not only will the energy-saving advantages of amorphous materials not be fully utilized, but the motor performance will not be as good as the original silicon steel motor.

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