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Working principle of motor
2025-09-18
The working principle of a motor is based on Faraday's law of electromagnetic induction and Ampere's law of force, with the core being the rotation of a current carrying conductor under force in a magnetic field. The main steps are:
The stator generates a fixed magnetic field: achieved through permanent magnets or electromagnets.
Current flowing into the rotor winding: making the rotor a current carrying conductor.
The interaction between magnetic field and current generates Lorentz force (F=I × B × L), and the tangential component of the force forms a rotational torque.
Energy conversion: electrical energy → magnetic energy → kinetic energy → mechanical energy, ultimately outputting torque through a rotating shaft.
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