Why should the motor use silicon steel sheet for excitation?
This is the same as the electromagnetic oven through the electromagnetic field heating principle. Therefore, in order to cut off the eddy current, it is the same reason that the silicon steel material with poor electrical conductivity adopts a piece of silicon steel sheet instead of the whole solid core. Before the lack of silicon steel sheet, that is, iron coated with insulating paint to solve this problem.
Because the alternating magnetic field generates current in the iron core, if the iron core has a strong electrical conductivity, it is equivalent to a closed short circuit circuit, which is called eddy current.
This is because the motor core uses silicon steel sheet, and this material has good magnetic conductivity and poor electrical conductivity. The motor produces magnetic force through the coil winding, which operates by using this magnetic force.
