RE: Combining Solar Panel and Windmill voltages

Thread Starter


Joined Jul 4, 2009
Hi guys,
Thanks in advance. I'm trying to combine two DC voltages. I have a motor generator and a solar panel. The generator outputs about 30V and the solar panel about 12V. I'm trying to charge a battery. Can anyone give some suggestions as to what I can try? Any sample circuits are also appreciated. Thanks so much.


Joined Aug 7, 2008
Is the motor-generator wind driven? I would use buck-boost circuits for each source to bring voltage to above battery charging voltage, then diode OR them to a common charging ckt. Try to load the solar panel down to 7/10 ths of open circuit V for max. power.