> From: Hans Maas <[EMAIL PROTECTED]> >Reply-To: Hans Maas <[EMAIL PROTECTED]> > Subject: via hydropage info > To: [EMAIL PROTECTED] > >Also I have the possession of a beautiful self-made mill located in Holland. > >But I want to build a 1.1 Kw asynchronous electric motor in to it to >generate power but I really don't know how to do this. >
the best person to help with this is usually Nigel Smith <[EMAIL PROTECTED]>. But he mostly works with hydro powered systems (constant power) and 3-phase motors, excite by the C-2C system of capacitors to give single phase output. > >Do you know how to hookup a 1.1Kw electric motor so I can connect this >to a electric heather or a light. You may need some sort of controller to match the available wind power to the connected load and keep the voltage stable. > > >I have heard that I have to use one or more condensers but I don't know >what strength those need to be (apparently there are different ones), or >how I have to connect those. You will need motor run capacitors that will work reliably at the specified voltage and deliver the required 'reactive current' at that voltage and frequency. > >The info there was on the motor plate is: 1.1Kw, 1380rpm, 220/230V, > >5.1 / 2.9A, Cos 0.76 This suggests that the reactive current will be 0.65 times 5.1 amps, in other words 3.3 amps. Reactance XC is therefore 230/3.3 = 70 0hms. capacitance = 1/(2*pi*f*XC) = 1/(2*3*50*70)=50 microfarads approx. I hope someone will correct me if this is wrong. > > > >Also I'm wondering that when I'm using this motor, does it matter if the >motor turns more or less rpm than 1380rpm, e.g. like when I use a >gearing and the wind picks up and the motor turns 3000rpm, or the wind >is moderate and the motor turns 900rpm. The motor speed will depend on the balance between the wind power and the load power at different speeds. you need to try to keep the speed in the right 'power band' for the blades (best tip speed ratio). To match the specification it would run at 1620 rpm and deliver power at 50 Hz with 8% slip. This speed would be on full load generating 1.1 kW of power. I hope this helps a little, but not much I fear :-) -- Hugh Scoraig Wind Electric http://www.scoraigwind.co.uk/ ------------------------ Yahoo! Groups Sponsor --------------------~--> In low income neighborhoods, 84% do not own computers. At Network for Good, help bridge the Digital Divide! http://us.click.yahoo.com/EA3HyD/3MnJAA/79vVAA/FGYolB/TM --------------------------------------------------------------------~-> Does your company feature in the microhydro business directory at http://microhydropower.net/directory ? If not, please register free of charge and be exposed to the microhydro community world wide! NOTE: The advertisements in this email are added by Yahoogroups who provides us with free email group services. The microhydro-group does not endorse products or support the advertisements in any way. More information on micro hydropower at http://microhydropower.net To unsubscribe: send empty message to [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/microhydro/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
