I think the general idear of hybrid diesel electric
is You cover the electro propulsion completly with the 2 generators and depending on power needed run the second generator
while allways storing the power left over in the battery
bank to where You also dump the energy from the solar panels
wich in case of a cat would also be significant in case of using the effective space available.
As far as the generator control of engine is not as complicated as using engine for propulsion because of +/- allways the same RPM
. Stabalizing energy comes from the battery bank.
Control and direction of the prop speed is a lot more simple.Itīs just on or off, reverse polarity and a potentiometer or frequency pulses for RPM
Just guessing I beleave cost for instalation and maintanance should be far less. Fuel consumption
is allways optimum and if handeled properly this installation
should very little maintanance....very view moving parts
Compare a rewind and varnish
bath of a small motor
with a complete over houl of a diesel engine. Usually the vital contacts are all air and water
tight Even the generators are in a much better enviroment.
I donīt think there is a lot that can go wrong compared to the tradicional diesel systems.
Of cause the generators also need attention but under those conditions they suffer a lot less. I also think in case of a generator wich is a lot smaller all service
can be done in a shop wich is cheap
while with a tradicional diesel it has to be done on board. Disconect a diesel engine from the boat...gear box etc. afterwards aligning the shaft or drive. With a gen itīs a couple of plugs and the fuel
lines.Also the cooling
in such a system like the Azimut is natural
No failure of pumps,belts, hull
through fittings etc..the gen doesnīt need seawater for cooling
Also there is a lot of safety
back up in such a system and a very great feature...allways enough energy on board.
Another nice feature is... with a wifi
joy stick the boat can be precision steered from any location on the boat. I find the tecnical posibilities amazing. You donīt controll the boat anymore... You just make decicions...the system does the rest
Have a look at this video
There is also one true fact that should not be under estimated. The most power requiered in a boat is while accelerating. And here an electro motor of the same KW rating clearly outperforms the combustion engine because full torque is available any time and all the time. Once the boat is in motion less power is requiered to maintain the motion. So as to have the same torque available it would need a higher rated combustion engine
I think there is a lot of future and I think itīs good to keep an open mind. Tradicional thinking set limits.
On the other side I beleave itīs only worth while in a new design where the full potential can be fully apreciated
Obviously with repowering a or even powering a new boat thatīs no designed for diesel hybrid electro propulsion that would not be the case