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Author Topic: The Turkish Turnip flies  (Read 10681 times)
fourfootfarm
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« Reply #45 on: April 12, 2017, 02:56:32 PM »

That's what I thought. The drive to tinker never ceases, and the enticement of pretty displays and MPPT efficiency is quite a lure too. But keeping it simple is a virtue in itself.

I'll keep an eye out for a 48v inverter in budget and when it comes to it change then, no rush I suppose!
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Outback FM60. EPsolar 30a MPPT and a bunch of Tristar 45's. Hodge Podge of solar ~ 4500w. Various generators and 1000ah 24v forklift battery.

Turkish Turnip
fourfootfarm
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« Reply #46 on: September 16, 2018, 07:40:16 PM »

Turnip finally given up the ghost.

My shed was tidied at somepoint without my knowledge and it looked like a connection to the rectifier came loose. Then over speed and then blades falling off. Thats my post mortem anyway. Not got the PMG down yet to have a look at it.

I could probably fix it but tempted to use the PMG for something else.



Front fell off!

The black (Istabreeze) 500w blades vs Navitron 300w Guess that'd be why it never generated more than 150w in a hurricane then.

Bodging 12v self regulating turbine to be normal turbine (Temp installation until I get some rectifiers which actually fit properly



Still breeze today so stood up on top of the berm to see if it would actually spin fast enough to put out 24v and it seemed to belt out the amps pretty happily.

Thanks to Navitron for the massive pile of turbine stuff.

When I've got it flying will post some more pictures.
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Outback FM60. EPsolar 30a MPPT and a bunch of Tristar 45's. Hodge Podge of solar ~ 4500w. Various generators and 1000ah 24v forklift battery.

Turkish Turnip
biff
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An unpaid Navitron volunteer who lives off-grid.


« Reply #47 on: September 16, 2018, 08:46:36 PM »

Well done FFF,
                 It give yee a nice warm glow to see the amps appearing on the clock after your rectifier block repair job.
      You have much better control and performance if you take the 3 phase down the tower and inside and rectify next to the controller on a nice cool heat sink,
  I did the same job on an Aelous 300 It never really worked right until i did that. Grin
  I recall many years ago, This wild life expert going to a remote island of the Scottish coast for 6,months.,  He took an Aelous 300 with him and the first serious storm, it blew the rectifiers. he seemed to be pretty handy and figured out immediately what was wrong, That is how i learned about removing the rectifiers in the turbine head and keeping them handy somewhere on ground level,
                                    Biff
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An unpaid Navitron volunteer,who has been living off-grid,powered by wind and solar,each year better than the last one.
fourfootfarm
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« Reply #48 on: September 16, 2018, 09:08:08 PM »

This rectifier was formerly at ground level servicing the turnip. Unfortunately I think the slip rings on the navitron machine are only for plus and minus. For the third phase I'd have to take the slip rings off and run the cabling down the middle. Thats doable with seasonal untangling I guess.

I've got plenty of turnips to got at so might try that on another one!

Can tell why navitron stopped selling them. The quality of the blade mount castings is a bit suspect, one of them the hole wasn't even in the middle! The pmg's seem fairly decent though.
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Outback FM60. EPsolar 30a MPPT and a bunch of Tristar 45's. Hodge Podge of solar ~ 4500w. Various generators and 1000ah 24v forklift battery.

Turkish Turnip
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