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The working principle of the motor is based on electromagnetic induction and Lorentz force. The main components of the motor include the stator and the rotor. The stator is the stationary part of the motor, usually composed of coils, which generates a magnetic field when powered on; the rotor is the rotating part, located in the magnetic field. When the current passes through the rotor coil, according to the principle of Lorentz force, the magnetic field will exert a force on the current, thereby driving the rotor to rotate.

Ferromagnetic materials: mainly used to manufacture motor poles, yokes and other components, common ones include pure iron, alloy steel (such as silicon steel sheets), etc. Electrical steel strips (plates) are soft magnetic materials, and are also mainly used in the motor and transformer industries to play a magnetic conductive role.Conductive materials: mainly used to manufacture motor wires, terminals, bearings and other components, mainly copper and aluminum. In addition, enameled wire is also a commonly used conductive material in motors, which has good insulation and conductivity.

Motor selection is to select motors with the best performance and cost-effectiveness according to the specific working conditions set to meet the needs of mechanical transmission or electrical control. Usually, multiple factors such as power, speed, voltage, load type, environmental conditions, working system and safety performance should be considered to determine the final selection plan.

The rotation principle of motors is mainly based on the interaction between current, magnetic field and force. When current flows through a wire, a magnetic field is generated around it. This magnetic field interacts with the magnetic field generated by the permanent magnet or electromagnet in the motor, thereby generating a rotation torque, causing the motor to start rotating.