On Tue, 23 Nov 2010 10:16 +0000, "Andy Pugh" <a...@andypugh.fsnet.co.uk>
wrote:

> 
> Doesn't it need to be synched to mains frequency rather than absolute
> time? 

(snip)

> However, what is really needed is to keep synch with the local mains
> during outages,

(snip)
 
> When the mains comes back you could use the PID to bring the generator
> back in to phase before switching back over. 

The original poster wrote:

> My next project is a remote off grid 60 HZ power unit.

I think this has nothing to do with transitions to/from utility
power.

John
-- 
  John Kasunich
  jmkasun...@fastmail.fm


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