LM-400P4 Model DC Motor Permanent Magnet Synchronous Motor for Electric Elevator Door Machine

 Door Machine Motor Of The Same Model Electric Elevator DC Motor Motor Permanent Magnet Synchronous Motor LM-400P4 

1. Core Structure: Coordination of the Stator and Rotor
The basic structure of a motor consists of two parts, providing the foundation for magnetic field operation:
The stator: Fixed within the motor housing, encloses coil windings. Its core function is to generate a magnetic field when current is applied, acting as the motor's "magnetic field generator."
The rotor: Located within the stator, it rotates freely and serves as the motor's "power output." Its rotational force comes from the force of the stator's magnetic field, ultimately driving external equipment through the rotating shaft.
2. Key Process: Electromagnetism → Magnetic Force → Driven Rotation
The entire energy conversion process is completed in three steps. Taking a common three-phase AC asynchronous motor (LM-400P4 type) as an example:
The stator generates a rotating magnetic field: When the stator windings are connected to three-phase AC power, the three sets of coils each generate an alternating magnetic field. These magnetic fields combine to form a continuously rotating "invisible magnetic field" (rotating magnetic field) within the motor. The speed is determined by the power supply frequency and the number of motor poles (for example, at a domestic 50Hz power frequency, the synchronous speed of a four-pole motor is approximately 1500 rpm). The rotor induces current and magnetic fields: The stator's rotating magnetic field "cuts" the rotor conductors (such as the cast aluminum bars of a squirrel-cage rotor). According to the law of electromagnetic induction, current is induced in the rotor conductors. The current-carrying conductors experience a Lorentz force in the magnetic field, causing the rotor to generate a "rotor magnetic field" in the same direction as the stator's magnetic field.

The magnetic field forces drive the rotor's rotation: a speed difference between the stator's rotating magnetic field and the rotor's (a characteristic of asynchronous motors) generates a magnetic force that pulls the rotor in rotation. The rotor outputs mechanical energy through the shaft, driving external equipment (such as conveyor belts and fans).