Regenerative braking is a kind of working state of asynchronous motor under special circumstances, which is different from energy consumption braking and reverse braking, both of which are applied to the motor in an artificial way to achieve the purpose of quick stop. Here is a look at the content of regenerative braking with Senli Motor Xiaobian.
Asynchronous motorWhen the rotor speed exceeds the rotation speed of the motor synchronous magnetic field, the rotation direction of the electromagnetic torque generated by the rotor winding is opposite to the rotation direction of the rotor, at this time, the motor is in the braking state.
The reason why the state at this time is called regenerative braking is because the motor is in a power generation state at this time, that is, the kinetic energy of the motor is converted into electrical energy.At this time, certain measures can be taken to return the generated electric energy to the grid, so as to achieve the purpose of energy saving.
We also call regenerative braking as power generation braking, which is generally used when a crane is falling,Three-phase asynchronous motorUnder the manual force of heavy weight, the rotor speed may exceed the synchronous speed. At this time, the motor is in the regenerative braking state. At this time, the braking torque of the motor is to prevent the fall of the weight, until the braking torque and the torque formed by gravity are equal, the weight will stop falling.
In the frequency control, when the frequency converter is reduced, the synchronous speed is also reduced. However, the rotor speed will not be reduced immediately due to the inertia of the load, at this time, the asynchronous motor will also be in a regenerative braking state until the speed of the drag system is also reduced.
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Shengzhou Senli Motor19Old motor manufacturers, with a number of their own motor production lines, from the shell, shaft, rotor, stator are independent production, all products are the use of professional product quality supervision and testing equipment full inspection factory, can provide testing reports. From the shaft machining to the whole machine assembly are completed independently. Truly realize factory direct sales.
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