RE: Combining Solar Panel and Windmill voltages

Discussion in 'The Projects Forum' started by rccengr, Sep 10, 2009.

  1. rccengr

    Thread Starter New Member

    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.
  2. pilko

    Senior Member

    Dec 8, 2008
    What are the specs. of the battery you want to charge?
  3. Bernard


    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.