Winding asynchronous motorAdditional resistance is inserted into the rotor to increase the slip rate of the motor, and the motor runs at a lower speed. The greater the resistance in the series, the lower the speed of the motor.

       This method is simple and easy to control, but the slip power is consumed on the resistance in the form of heat. It is a step speed regulation with soft mechanical characteristics. Asynchronous motorCascade speed regulation means that the adjustable additional potential is inserted into the rotor loop of the winding asynchronous motor to change the slip rate of the motor to achieve the purpose of speed regulation. Cascade speed regulation can be divided into motor cascade speed regulation, mechanical cascade speed regulation and thyristor cascade speed regulation.

       Generally, thyristor cascade speed regulation is used, which is characterized by:

       ①The capacity of the device is proportional to the speed regulation range, the investment is provincial, and it is suitable for the speed regulation range at the rated speed70%-90%On the production machinery;

       ②The power factor of thyristor cascade speed regulation is low and the influence of harmonics is great.

       ③The slip loss in the speed regulation process can be returned to the power grid or production machinery, with high efficiency;

       ④When the speed regulating device fails, it can be switched to full speed operation to avoid stopping production.

       The method is suitable for fans, water pumps, rolling mills, mine elevators and extruders.

       The above content is composed ofThree-phase asynchronous motor manufacturers,Mori machineProvided.Available if needed1688 Search "Shengzhou Chaoli Electric Appliance Factory", or contact us directly0575-8378-1127.