Category Archives: products/technical

How to make an AC heater act as a charge controller

I have just added a page about how to build a Tristar Follower (as I call it) that uses an AC heater connected to your inverter to dump surplus power (usually into heating water) when the battery does not need … Continue reading

Posted in construction, my own projects, products/technical | 1 Comment

Low cost MPPT heating controller for wind turbines

Schams Electronic in Germany make some neat little MPPT controllers for solar and for wind. The Windmax MPPT controllers are modular, built from 500W units, with capacity up to 2.5kW.  These controllers have built-in protection against over-voltage when the battery … Continue reading

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Alex Burgos’ overvoltage clipper

Alex sent me an email: I hope you are well I am writing to show my CLIPPER I tried it with my 12 volt turbine I have the Tristar ts-60 dc and ac Clipper The CLIPPER use it to control … Continue reading

Posted in construction, People, products/technical, wind systems tutorial | Leave a comment

Enasolar grid-tied inverters for hydro turbines

Enasolar inverters are made in New Zealand. They are fully compliant with UK grid standards G83/1-1 or G59/2. These inverters are the ideal choice for connecting a PowerSpout hydro turbine to the grid in the UK and other 50Hz AC countries. Many … Continue reading

Posted in PowerSpout hydro turbines, products/technical | 1 Comment

Possible student research project

Adriaan Kragten has been kind enough to notify me of his latest design work which is documented in his free pdf reports available for download here.  Most of his wind turbines have been based on converting induction motors to pm alternators … Continue reading

Posted in construction, People, products/technical | 1 Comment

Adopt a turbine!

If you’d like a homebuilt wind turbine but can’t find time to build one then you might consider adopting one built in a workshop course?  V3Power are offering several wind turbines and parts on this basis here.  

Posted in construction, People, products/technical, UK small wind scene | Leave a comment

Homebrew stuff for sale

John Gambill has some useful stuff for homebrew wind for sale.  He lives at Hotwire Enterprises 102 W. Fulton St. Tarpon Springs, FL 34689, USA (727) 943-0424 He has diversion loads and blocking diodes and some low power Chinese alternators … Continue reading

Posted in construction, People, products/technical | 1 Comment

Battery storage on the grid

My friend Ian Woofenden has this to say about using batteries on the grid: Tesla Battery Perspective There’s been a lot of buzz recently about the Tesla battery. My attitude and ideas toward it are tempered by 30+ years of … Continue reading

Posted in People, products/technical, wind systems tutorial | 15 Comments

Wiring loss in 3 phase wind systems

Here is a piece I did about AC and DC in 1999.  It explains why DC wiring is slightly more efficient than 3-phase AC wiring where the AC is feeding a rectifier (rather than grid AC which is at  higher … Continue reading

Posted in products/technical, wind systems tutorial | 2 Comments

Hornet wind turbine next door

After the storm destroyed the Ampair 100 that was on this mast, a neighbour bought a Hornet from http://windgenerator.org.uk/  This is the 8-blade 1250 watt version.  Apparently it has been seen producing 1251 watts into a 24 volt battery “in … Continue reading

Posted in products/technical, Scoraig, UK small wind scene | 27 Comments