Feasibility study for a battery charging system for use on yachts.
Complete DC battery charging system for boat applications, consisting mainly of
WST Wankel motor
power generator
Control and power electronics
Capsule for sound insulation and CAN based interface for system integration
Cooling by sea water heat exchanger
Charging power 45KW to 60KW electric, 400V DC (for charging two BMW i3 batteries connected in parallel)
For operation with diesel fuel (range of fuel quality to be determined)
As quiet and low vibration as possible
As small and light as possible, with a weight of max. 400 kg including sound capsule
Reference values
Mechanical power: Pmech = 65 kW
Operating speed: n = 4500 1/min
Torque: M = 138 Nm
Fuel consumption: mks = 19.3 kg/h
Air mass flow: mLu = 583 kg/h
Generator power: Pel = 58 kW
Seawater inlet temperature: TSWein = 35°C
Seawater outlet temperature: TSWaus = 63°C
Exhaust gas outlet temperature: TAGaus = 66°C
The current estimated total weight is 294kg