Interesting, I didn’t realize they were actually making those. How does it work so far? I don’t think I would need the full power of that one but I definitely want more than the 180ibl. The other option I was thinking of was to hook their hybrid system to my existing yanmar and use that as a genset to run the dive compressor. I wrote to the fellow a while back and he said he was working on a clutched version of that so you could charge batteries without the prop shaft turning.
Thanks,
Jerry Barth
From:
Sent: Monday, February 14, 2011 3:38 PM
To:
Subject: Re: [Electric Boats] Ganged Motors
I have the 360ibl from electrictyacht.com It is two 180ibl motors with two synchronized servacon controllers.
Sent from my iPhone
On Feb 14, 2011, at 3:02 PM, "Jerry Barth" <shredderf16@sbcglobal.net> wrote:
I think I sort of asked this question a couple of years ago but I’ll ask it again in case there were some new developments. I have a 35 foot cat rebuild project that I’ll start in about two years (after the house remodel). One hull already has a Yanmar 2GM20 in it. I need power for the other hull. I would like to do some kind of diesel hybrid because I need a genset anyway to run a dive compressor and water and ice makers. I corresponded with Arjan Bock when he did his unsuccessful cat hybrid (not enough power, melted controllers, etc.) Based on his experience, I think I need a minimum of 10 KW turning the prop. I don’t believe anyone has come up with a motor this big that is 48 volts, am I wrong? Also, I think just about the biggest controller there is can only handle about 100 amps without getting too hot. The other idea I had was ganging two 5 KW motors together on a baseplate turning a common shaft through belts with two controllers both running 100 amps or so. Has anyone tried this? Would we get into problems where one motor is out of sync and working harder than the other? One advantage I thought of is that you would always still have at least half power in case a motor or controller failed.
Thanks,
Jerry Barth
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