To reduce losses due to eddy currents in the motor, high-grade steel with a higher silicon content is used to reduce the friction of the magnetic materials and therefore reduce the heat produced in changing the magnetic fields of the motor iron.

Question

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High-grade steel with a higher silicon content is used in motors to increase the electrical resistivity of the steel, which reduces eddy current losses, not to reduce friction of magnetic materials. Eddy currents are loops of electric current induced within conductors by a changing magnetic field, and their reduction is crucial for improving efficiency in electrical machines.

To Reduce Losses Due to Eddy Currents in the Motor