how to regulate dc motor generator to 12v battery?

Question

Here is what I have 10 foot wind-tirbine, 40 foot tower,24vdc perm magnet motor, six 12v truck batt connected parallel.
its all set up and functions well with a autonotive generator(not altanator) ond app automotive voltage regulator.However doesnt produce enough power. and i have changed the automotive generator to a 24vdc perm mag lil racale motor. and my question is HOW DO I REGULATE THE VOLTAGE AS TO NOT OVERCHARGE THE BATTERYS I need to make a voltage controler or modify other inexpensive means or other inexpensive aplications. thank you in advance

Answer 1

No offense, but from your question and details, you need to do some research into basic electricity, voltage generation, current control techniques, battery construction, etc. I recommend Nuts-N-Volts magazine for electronics basics and projects. Also do some Google searches on: generators, regulators, alternators, diodes, charging stations, current limiting, power control, etc.

Answer 2

Voltage regulation is a integral part of any system where the rpm of the generator/alternator varies significantly (think of the alternator in a car). Another important consideration is whether the motor/generator would handle putting out 4-5 times its rated voltage. You should think about disconnecting the wind turbine from the generator at some point to prevent this (or just having a mechanism by which it turns out of the wind automatically). To answer your question more directly: A 12 v battery certainly would not like a 30 volt voltage source to be connected to it. You will end up hurting the battery.

Answer 3

It would have been nice if the generator that you were using had a field winding that could be modulated as the voltage became higher. But since you don't you will have to place a series regulator into your circuit that limits the current as the voltage gets higher. The only problem is that as the regulator cuts down the current the voltage from the generator may go up to a point where it can blow up your regulator. That's why field control is best.

Answer 4

Is it pocible to use some sort of electromagnetic clutch? you could somehow construct some sort of clutch that will slowly dissengage the turbine from the generator as the bateries reach full charge. I have a charger that has a solinoid switch that dissconects the power completly when the batery is charged, perhaps you could use a similar concept to dissengage a clutch. The condencer pumps in cars work the same way. they have a clutch that is connected to the belt that clicks on and off as pressure is needed. or, you could have some sort of hydrostatic transmition that will simply reduce the power supplyed to the generator as the batteries aproach full charge. the generator would simply slow to a stop and restart when the bateries drop below full charge.

Answer 5

I'd try to regulate the turbine to the voltage. When batteries reach approximately 15 volts either lock the turbine or disengage the generator.

Answer 6

B H ... Non taken, However refer to elementry electronics 101... and read the question again.... "its all set up and functions well""and my question is "HOW DO I REGULATE THE VOLTAGE AS TO NOT OVERCHARGE THE BATTERYS" I undersand you dont know but guessing is ok. oh this will help, + is possitive and - is negative, again Thank you in advance