Electronic Projects, forums and more.

Go Back   Electronic Circuits Projects Diagrams Free > Electronics Forums > Electronic Projects Design/Ideas/Reviews


Electronic Projects Design/Ideas/Reviews Are you building an electronic project or want to? Maybe you need some assistance? Come and submit your electronic questions here and let our experienced members find a solution.

Reply
 
LinkBack Thread Tools Display Modes
Old 10th March 2008, 06:31 AM   (permalink)
Default Generator, Voltage/frequency increase

Any thoughts on improving the output of a wind alternator by reducing the "perceived" load on it? By increasing the AC output to a high voltage and/or frequency before showing it to some form of capacitance storage, prior to batteries? I don't believe a cap(s) see high freq/volts as the same impedance as a conventional load would. Perhaps you could step-up with a series of voltage doublers and/or transformer. What ever is the more efficient. Maybe even an old CW multipler approach after a jump with something else like a power supply? You could gain a lot of RPMs (16-25%?) without the "load". Is something like this possible?

bd
bdsolar is offline  
Old 10th March 2008, 08:56 AM   (permalink)
Default

It depends what is limiting the output at the moment.

Can you tell us more about the generator, and the rectifiers etc?

Some alternators are current limited by their own inductance. You can add series capacitance, before the rectifiers, to compensate for the inductance, which will give you more current.

However.....

On a wind generator the speed is very variable and so the optimum capacitor varies a lot.

You may be limited by the power available from the wind anyhow.

and

The alternator may overheat if you get more current from it than it was designed to give.
Diver300 is offline  
Old 10th March 2008, 02:46 PM   (permalink)
Default PM alternator type...

A permenant magnet alternator, when put under load (as in charging) will naturaly reduce in RPMs. If the output is first increased in both voltage and frequency, a capacitor circuit would not react to the previous impedance of the output and reduce speed. At that point the energy would be introduced to a charging system. I'm guessing a voltage multipler (or simular circuit) would have to relate to resonance and speed of the system.

bd
bdsolar is offline  
Old 10th March 2008, 06:51 PM   (permalink)
Default frequency

Actually I think the frequency would be key. In a circuit where there's capacitance and inductance, impedance and resistance are not the same. Impedance would vary with frequency. Higher frequency would be less impedance, right?

bd
bdsolar is offline  
Reply

Bookmarks

Thread Tools
Display Modes



Similar Threads
Title Starter Forum Replies Latest
How to increase the sensivity in MT8870 Suraj143 General Electronics Chat 10 14th August 2007 04:06 AM
Increase the range of RF transmitter/receiver letsrelaythat Electronic Projects Design/Ideas/Reviews 19 5th July 2004 05:44 PM
To increase range... surjo_dm General Electronics Chat 1 1st December 2003 02:12 PM
Increase range of a rc car...? bd13 Electronic Projects Design/Ideas/Reviews 5 27th October 2003 10:02 PM
Anybody knows how to increase the walkie talkie range? buloi123 General Electronics Chat 4 3rd October 2003 03:21 AM



All times are GMT. The time now is 05:30 AM.


Electronic Circuits  |  Learning Electronics
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2009, Jelsoft Enterprises Ltd.

eXTReMe Tracker