An Efficient and Cost-Effective Power Scheduling in Zero-Emission Ferry Ships

Table 1

Technical characteristics of the PEM fuel cell-battery hybrid system.

Type	High-speed passenger ferry
Overall length	24.5 m
Beam	8 m
Average speed	25.3 knots (47.2 km/h)
Maximum speed	32.5 knots (60.67 km/h)
Distance	8 nm
Total voyage time	9 hours
Fuel cell power	2 PEMFC of 200 kW each and a PEMFC of 100 kW
Hydrogen price	1.35 ($/kg)
Average shaft power	235.41 kW
Main engine power (MEP)	500 kW
Hydrogen fuel (kg)	376
Hydrogen per tank (kg)	18.8
Number of tanks	20
Battery capacity (kWh)	200
Battery charge efficiency	85%
Battery discharge efficiency	100%
Initial state of charge	85 kWh
Minimum allowable capacity	60 kWh (30% of the battery capacity)
Maximum allowable capacity	170 kWh (85% of the battery capacity)
Total investment cost of battery banks (F)	3562 $