Regenerative braking decelerates the motor faster than dynamic braking.

• A. True
• B. False
• C. Not applicable
• D. Unknown

Answer: (A)

Braking rate is all about the torque you can apply to slow the rotor. In regenerative braking, the motor runs as a generator and pushes energy back into the power source or DC bus. That means the drive can often push a higher braking current through the motor without wasting it as heat in a resistor. With enough absorption capacity on the source side, you get a strong braking torque and a quicker slowdown, since torque is proportional to current.

In dynamic braking, the generated current is dumped into a braking resistor, and the current—and thus the braking torque—are limited by the resistor’s value and its heat rating. That energy is lost as heat instead of being returned, so the torque tends to be bounded by the resistor design and can be lower than what regenerative braking can deliver.

So, when the electrical system can absorb the returned energy, regenerative braking typically provides faster deceleration than dynamic braking.