Rhasor looks like a nice unit to get in tight spaces for the production even so very small but at least itīs low
RPM and Kubota seems like a reliable name.
Have no experience with electro drive and until for construction of a
new boat I donīt see it practical to convert a diesel powered
boat to electro drive.
But I see some positive aspects for boat building to it.
For example the electrodrive has a very low foot print and can fit any where in the
bilge. Also I have seen units that are outside of the hull for the
cooling of the motor. The unit is mounted on a shaft that goes on or through the hull that also serves as very effective
steering. These units also can be retracted while not in use wich would make them less succeptable to plant growth etc. and all the hassle of maintanance that comes with it.
I think one of the biggest atvantages is the gain of the space of the engine room because the generator can be on any conveniant location on the boat. That should also have positive features on
noise and vibration levels.
That should open up a total new spectrum in space lay out on boats
Another positive factor is they bring the max torque right from the start and through out the whole spec of RPM wich should be very positive for prop design. All of that should lead to a more effecient use of KW produced from the diesel generator.
As far as control of DC or AC motors, I beleave there has been made lots of progress and I donīt see this an issue at all
Another thing I really like with a generator as prime source everything on board would run on electricity NO more gas bottles wich is very clean and the instalation is very easy. With a right sized
Lithium pack I also beleave the generator would not have to run all the time.
For
safety, well just another small unit that is also used if more power is requiered for peaks
In case of
service the whole and compact unit is just disconected and hauled out to any conveniant shop / location and nothing of the
marine price mark ups.
In case of a new design I could see myself seriously considering