Any suggestions for the cheapest (a few dollars) way to implement DC injection braking (or other braking) in a motor control circuit? All we need in the circuit is on/off control and we are considering a triac or a relay. I have wondered if we could simply drive the triac during one half cycle...
1. Is it possible to reliably sense motor rotation from back EMF during coast down to determine when the motor has stopped rotating?
2. Will we see similar or at least some back emf with all typical single and three phase induction motors in the few horsepower range?
3. If the answer to...
