When the motor is stopped, one end of any two of the three wires of the power supply can be adjusted to the position, so that the rotating magnetic field is rotated, and the rotor is still rotating in the original direction due to inertia, and the torque direction is opposite to the rotation direction of the three-phase asynchronous motor, thus playing a braking role.
In reverse braking, the rotating magnetic field and the relative speed of the rotor are large, so the current is large. In order to limit the current, the power is largerThree-phase asynchronous motorFor reverse braking, resistance must be inserted in the stator circuit (squirrel cage motor) or the rotor circuit (winding motor).
The advantages of reverse braking are quick stopping, simple circuit, and no DC power supply. The disadvantage is that the energy loss is large, there is a large impact force in the braking process, and the impact is larger when used for precision machine tools, and this impact is also unfavorable to the structure of the motor itself.
Therefore, we are in larger capacityThree-phase asynchronous motorIn general, this braking method is rarely used. Usually used for occasions that do not often start and brake, such as small and medium-sized lathes, milling machines, or auxiliary electric driving of rolling machines.
Senli Motor,19Focus on the development and production of electric motors. Available if needed1688Search factory name "Shengzhou Chaoli Electric Appliance Factory" , Or online consultation message, we will have business personnel to get in touch with you, you can also contact us directly0575-8378-1127.