Well, the generators are synchronized to the line, and the blade to generator gearboxes may be the same for a common group of machines. Wind farms may have a mixture of machines with different gearboxes for different blades.
Groups of the same machine type will not be synchronized if they use variable speed gearboxes to optimize efficiency. The generators are coupled synchronous machines, almost always synched to a power grid - wind power is not as reliable as steam. But an isolated wind farm might exist. If it needed to generate a fixed frequency then one of the generators would be synchronized to a standard. The other generators would lock to the stabilized generator for stable power distribution. The stabilized generator has to be large enough to keep the others in sync. Bill Hawkins -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Van Baak Sent: Friday, May 02, 2008 12:06 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Optical time sync > Now these are quite impressive but what really caught my eye was one >> with a Garmin hockey puck GPS antenna on top of it, I thought 'what's >> this?' I inquired of the sales rep lady at the booth and she >> informed me that beacons for wind farms are required to have >> sychronized beacon lights. > > Neat hack. Thanks. > > I assume a GPS on top of a windmill has a great view of the sky. How > much trouble do they get from multi-path off the blades? Are they > metal or fiberglass? I wonder if the blades also are in sync, either amongst themselves, or with GPS, or with the power grid frequency. /tvb _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.