Brushed DC Motor - Brushless AC Motor/ synchronous AC Motor

5 important questions on Brushed DC Motor - Brushless AC Motor/ synchronous AC Motor

What modifications has to be done to turn an BLDC motor into a BLAC motor?

Changing the DC power to AC

What are 2 differences between a BDC motor and BAC motor?

BAC motors don't use a commutator and the current is always in the same direction

What happens when the Load angle is bigger than 90degrees?

The rotor will be pulled back
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What happens when the rotation angle becomes negative?

The motor begins to act like a generator.

Can we always take the maximum Torque (independent of motorspeed)?

Yes, because this only depends on load angle and this angle is automatically increased when more torque is needed.

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