So far, the solar has been plenty. But, hopefully we will start experimenting with regen in the next few weeks. Don't worry, once we figure it out, we'll post a video all about it.
cool Would love to see it. please let us know if you need to use other equipment other than stated in your design to be able to recharge the batteries with the motor while under sail. one thing I have seen is that during the recharge phase the motor may need a little push to get it to begin spinning while trying to recharge.
After watching Sailing UMA I designed a similar system on Cinderella, but I went with a controller capable of regen on my PM DC motor. I was able to regen last time I was out sailing, but I have not yet installed a working ammeter that measures flow in the opposite direction, so I cannot speak to how much was put back into the bank. One thing I did learn was that the regen is influenced heavily by the prop. If you have a folding prop, and you would like to engage the regen, you need to throw the motor in reverse for a quick second while you are under sail to lock the propeller open. Once it's open it will spin the motor and produce electricity. Other than that, it shouldn't need a "push." If your prop isn't folding you most likely can hear it spin while you are out sailing, no push required.
I'll have to give that a try. I installed a Thuderstruck 10k kit (which will do regen) in my Pearson 30. I have been out with it a few times, and am happy with it so far (though I have to make a few changes to how the throttle control is set up and clean up some stuff). I have a folding prop and figured regen would not work after I change the prop out, but I can give it a try this weekend. I have only powered at low speeds to conserve amps. Right now, I don't have any instrumentation telling me battery state (I'll remedy that soon), so I'm being careful with consumption. I am on a mooring, so I use a 1.5kw generator on deck for recharge after a sail, but I'll be adding solar next year.