Electrical Engineering XYZ MCQ
To save energy during braking which type of braking is preferred:
- Regenerative
- Dynamic
- Plugging
- All of the above
Correct answer: 1. Regenerative braking
Explanation: Regenerative braking is one of the braking methods used for AC Induction Motors Braking.
Regenerative braking takes the concept of dynamic braking one step further, in converting the DC bus over-voltage into usable AC power to be placed back on the AC line for other AC devices to use. Rather than regulate DC bus voltage via a shunt resistor switched on and off by a special transistor, a regenerative drive manages the same task by augmenting the bridge rectifier diode array with a set of six more power transistors, then switching those transistors on and off synchronously with the line voltage (the AC power source). Continue reading complete article on regenerative braking here.
List of all braking methods:
- DC injection braking
- Dynamic braking of AC Induction Motors
- Regenerative braking of AC Induction Motors
- Braking using Plugging