3 phase rectifier ... Are blocking diode(s) needed?

Discussion in 'Diode Installation' started by timber, Oct 25, 2010.

  1. timber

    timber WindyNation Engineer

    System has 3 phase motor (alternator ... WN 500W PMA), I will be using a WN 80A 3 phase rectifier.
    I would assume that the rectifier is all I will need between my alternator and charge controller, is this correct?
    I also have solar input going into the charge controller but I believe the panel(s) already have a diode built-in (easy enough to check with my ohm meter). Is there any need for an additional blocking diode(s) in my system?

    Thank you in advance.

  2. windyguru

    windyguru WindyNation Expert

    No diodes are need if you are using a 3 phase generator with a 3-phase bridge rectifier. The rectifier already has diodes inside of it.

    Your solar panels most likely already have the diode pre-installed. There should be a black plastic case where the wires come out the back of the solar panel. Take a screw driver and pop the lid off that plastic case. Once you have the lid off, you should see a Schottky diode inside.

    So, you should not need to purchase any diodes.
  3. timber

    timber WindyNation Engineer

    Thank you WG!
    I thought that was the case but it's nice to know for sure.
    I appreciate the quick reply, this forum is a great way educate the user as well as gain feedback about your product(s).
    Good to know that WN is involved throughout installation and the product's life ... that's excellent service!



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