Well all generators need VR. That's a given - but how the generator does it varies. Some of the marketing bragging points involve how fast this VR happens.
Some state that they “react” within one cycle – IOW in simple terms, the voltage doesn’t go through more than one full 60 Hz wave form below some specified limit before reacting to the low line condition.
Here's some methods designers might use:
http://www.powerdesigners.com/InfoWeb/design_center/articles/AVR/avr.shtm
Some state that they “react” within one cycle – IOW in simple terms, the voltage doesn’t go through more than one full 60 Hz wave form below some specified limit before reacting to the low line condition.
Here's some methods designers might use:
http://www.powerdesigners.com/InfoWeb/design_center/articles/AVR/avr.shtm