In article , Gary Coffman says...

But in any case, what we're concerned about here is what
happens when there is a momentary power failure. Then
the start circuit does not engage, and the motor sits at
locked rotor current until either the breaker trips, or the
motor burns up.

There are motor protect circuits which can prevent this.
The simplest is the dropout contactor.

Agree. A dropout contactor is the best way to go.
I would suggest anyone who builds a home-made converter
include this feature.

JIm

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