Hi Michael,
I would like to raise a point that should make our conversations more consistant and understandable.
"Regeneration" (as related to electric drives) is an energy recovery mechanism which converts kinetic energy into another form, which can be either used immediately or stored until needed. So in our cases, "regen" is specifically used to describe turning your momentum into electricity.
The most common form of regenerative system involves using an electric drive motor as an electric generator. In battery electric and hybrid electric vehicles (including boats), the energy is stored in a battery or bank of capacitors for later use. Energy may also be stored mechanically via pneumatics, hydraulics or the kinetic energy of a rotating flywheel.
Other sources of electricity are not regen. PV solar panels, wind generators, internal combution generators, etc. generate electricity, they do not regenerate electricity. Your last line would be more accurately stated as "mainly charging would be done in order of preference by regen (sailing), wind/solar, shore power and then the diesel"
Similarly, describing your system as a serial hybrid, rather than a parallel hybrid speaks volumes about your concept. A Toyota Prius is a parallel hybrid (the wheels can be driven directly by either gasoline and/or electric), a Chevy Volt is a serial hybrid (the wheels are driven only by electric motors). As Mike has explained, the EY hybrid drives are parallel, Steve's electric Lagoon catamaran is serial. Both types of systems have benefits and drawbacks, the best choice for a specific boat depends on many factors.
Just like regular boating has very specific terminology for every little thing, our EV systems have a similarly detailed vocabulary. Since we are both mariners and EV enthusiasts that are discussing matters blindly across the ether, speaking accurately increases comprehension.
Fair winds,
Eric
Marina del Rey, CA
--- In electricboats@yahoogroups.com, Michael Mccomb <mccomb.michael@...> wrote:
>
> yes, you have understood what i am looking for.... Â a diesel turning an ME0913 so that the power produced can then be utilized to charge a battery bank/house load OR be sent directly to another ME0913 which is the propulsion motor.... Â in effect you would have a 48v buss that everything attaches to one way or another.... Â i can build my own controller to integrate everything
>
> i understand what you are saying about increased efficiency if one goes from the diesel directly to the prop via a clutch or whatever but i believe it will be a very rare indeed WHENEVER i use the diesel at all.... Â the diesel is basically a standby emergency system for when the batteries run out OR some extraordinary circumstance like dead calm or fighting a storm or tide occurs..... Â only the tide is completely predictable so i would avoid this of course but IF the need for enhanced power arose then with a bit of planning ahead it would be possible to draw energy from both the batteries and the diesel in order to give just a slight extra punch for a brief period of time.... Â because use of the engine at all would be really rare i'd just as soon not have it connected directly, via clutch, transmission or in any way at all to the prop... engine alignment in terms of the diesel becomes meaningless which is nice and proximity of diesel to the prop is
> freed up
>
> mainly regeneration would be done in order of preference by sailing, wind/solar, shore power and then the diesel
>
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