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    How does permanent magnet synchronous motor save energy for elevator?

    2020-01-19 H:36:18
    second

    Permanent magnet synchronous motor is a synchronous motor that generates synchronous rotating magnetic field by excitation of permanent magnet. The permanent magnet acts as a rotor to generate rotating magnetic field. The three-phase stator winding induces three-phase symmetrical current through armature reaction under the action of rotating magnetic field.


    At this time, the kinetic energy of the rotor is converted into electric energy, the permanent magnet synchronous motor is used as a generator. In addition, when the stator side through the three-phase symmetrical current, because the three-phase stator in the spatial position of the difference of 120, so the three-phase stator current in the space to generate a rotating magnetic field, the rotor rotating magnetic field is moved by the electromagnetic force, at this time the electric energy is converted into kinetic energy, permanent magnet synchronous motor for motor.


    What many people do know is that permanent magnet synchronous motors are also widely used in elevators, their low noise operation, elevator level accuracy passenger comfort are greater than previous drive systems.


    In the design production of elevator, the development application of permanent magnet synchronous motor, as the traction motor of elevator, is a technological progress. Its advantages are simple compact structure, less maintenance high safety reliability, while it has low noise pollution to the environment, no oil pollution, can improve the power factor, is an ideal environmental protection product. Improve the mechanical transmission efficiency, the use of energy saving, economy, with a high cost performance, compared with the AC gearless asynchronous motor drive system, it has low speed, fast, hard mechanical characteristics parking self-closing advantages, is the asynchronous motor can be compared.


    Compared with the DC gearless motor drive system, it has higher low-speed performance, speed regulation accuracy, fast response performance, long life, less power consumption, simple maintenance. In addition, it is also easy to achieve low speed, large torque elevator ideal drive model.


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