Put the generators in series and you get 24 volt. Another way of doing this is by puttingthe generators in parallel and boosting the voltage to 24volt using the appropriate circuitry.
Putting two generators on series might lead to problems.
The generators will probably generate different powers,
this is not good when putten in series.
Getting 24 volts from two 12 volt generators is do-able. If you could tell us what type of generators you have exactly, it would help. Are they the same size? What type of voltage regulation? Is the application the same for both?
Squido W Cash
Would anyone like to comment on why so many posters on this site are not willing to state where they reside. Is there something here to be afraid of?
My feeling is keep em separate, and use what circuitry you need to get them whatever voltage they need to be. You can merge them after all the power processing a lot easier.
Your DC Generators would have to put out 26 Volts or more for you to charge a 24 volt battery bank. The generators output will always be pulled down to the battery voltage level. I have tried doing the same thing with my windmill, but unless your generator can put out 24+ volts it wont work. On the other hand, you can build a PWM charge circuit to pulse the power to the batteries with a step up DC to DC converter, doing it this way would also reduce desulfation of the batteries. See my windmill work log here >> http://www.morse-code.com/windmill_generator.htm