As Mr Wizard pointed out years ago, grid tie generators have the luxury of lead/lag pull-in via 1000x the energy in an established wave form.
With a 40KW John Deere/LIMA and a 40 KW Perkins/Stamford
And an owner utterly convinced that synchronization was "as simple as pie" he scoffed at my cost estimate to make the units play nice.
So he made his own paralleling 240 incandescent lamp setup.
He threw the switch (I wasn't there)
The Perkins Stamford started oscillating, from what I heard the oscillations rapidly became out of control. Oscillating means out-of control surging.
Both voltage regulators fried which threw them off-line. The primary exciters overloaded and they too destroyed themselves.
These were manual throttle control voltage regulated generators
I have a question to ask
Do you think there is some sort of peace treaty between inverter generator manufacturers that inhibits them from suing another manufacturer for patent infringement regarding any component dealing with voltage regulation and inverter designs?
Regardless
Are you willing to risk your generator or anything connected to it in an attempt to synchronize untested theory?
Mechanical synchronization is an art. To assume a second different generator can gather data then process it is a rather large assumption.
I can't help but remember Washoe Medical Center chief engineer Dwayne Telecky standing at the curb of east fourth street in Reno NV wondering how a V-12 Caterpillar engine and KATO generator jumped 50 feet through a cinder brick wall in flames (the coolant was flammable). I was on hand months before to see the operation of a six figure auto-start system and paralleling circuit. The load-shed was integrated and just conceptualizing it's entirety gave me a headache.
I believe contacting the OEM tech departments is in order. If even one says "no" I wouldn't try it.
