Dear Mr. Pintalo & jbartos(Electrical) Mar 24, 2004
It is common in AVR circuits to have a free wheeling diode or blocking diode to protect against the collapsing field of the generator when the unit is taken off line.
When I mentioned negative excitation I was referring to inverted pulse, of...
When a 3 phase electric generator is on line (generator using rotating brushless exciter), is it advisable or necessary to underexcitate the generator in order to open the field breaker, before opening the Circuit breaker?. Also is it advisable to provoke negative excitation?
