what are the applications of ac dynamic braking?
I assume that you are asking about dynamic braking of an AC motor. The term “dynamic braking” is usually applied where braking energy is dissipated as heat in resistors. Where braking energy is returned to the power supply, the term “regenerative braking” is usually used. “DC braking” of an AC induction motor refers to braking by applying DC current to the motor windings. Dynamic and regenerative braking can only be implemented when the motor is controlled by a variable frequency drive (VFD). Because the braking energy can not be reused, dynamic braking is used in applications that do not generate a lot of braking energy or do not have a means for storing braking energy or using it elsewhere. A relatively simple control unit is used to connect the braking resistors and modulate the braking current when braking is required. Regenerative braking requires a more complicated control unit unless the VFD is DC powered.
Do you mean vehicle braking? Not as good as DC dynamic braking, which for vehicles, means you can recover the energy and store it in a battery. AC, you have to dissipate it in a resistor or in the generator itself.
