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Question:

what is dc injection braking for ac motors and how does it work ? can i replace ac drives braking ?

wondering if there is any solution for braking motors other than a vfd braking , heard about dc injection braking any idea on how a dc injection braking would work ? . A dc injection braking for ac motors

Answer:

works okorder /
The 'authentic potential' decrease fee quotes would be according to potential ingredient. The section-controlled DCpersistent would have a undesirable potential ingredient at decrease speeds, coming near an very almost appropriate potential ingredient at complete speed. The V*A used interior the motor isn't that plenty diverse. The DC motor demands a magnetizing field to be energized (different than PM automobiles), as does the AC. The AC magnetizing present day is extra stable to make certain, yet is calculated by way of greater end drives, such which you are going to see that the 'loss' or 'overhead' of in simple terms turning the shaft devoid of load.
I have seen some in Elevators Main Motor controller DC Braking features when the Power contact or drop out , Dc will be applied thro a Timed contact or to the stator Winding with spl circuitry with protection.( braking supply will be Injected for a fraction of sec.) other one i have seen in soft start controller ( thyristor controlled power adjuster DC will be injected thro Spl circuitry for Stopping the Drive motor) Try ur best ,Best of luck

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