Generator, Voltage/frequency increase

[bdsolar]

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

 

[Diver300]

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.

 

[bdsolar]

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]

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