Kewatec
e-Work 2100 Hybrid Electric
Hybrid System Enables Clean and Quiet Sailing
The Kewatec e-Work 2100 is designed for fairway service and its main propulsion is a battery electric and diesel-hybrid drive. Both systems can be used individually or together in boost mode for high performance.
Solution
ESS /onboard-grid
Energy storage
198 kWh
Grid inverter
Danfoss Editron
EC-C1200-450 AFE
Charging solution
Shore Grid, On-board Genset
Charge power
25 kW - 75kW
Hevtec was responsible for overall electrification support for Kewatec, providing:
- High Voltage DC-power distribution engineering
- Hevtec Control System control system with HMI in wheelhouse
- 198 kWh battery system energy management
- Active Front End (AFE) and MicroGrid (uG) control with grid load sensing
Hevtec Control System features used in this project:
- Multiple energy source management
- Charge while driving
- Battery system and power electronics thermal management
- Auxiliary system control
- Charge control
- Touch-screen GUI
Battery Electric and Diesel Hybrid Systems for High Performance
The Kewatec e-Work 2100 is designed for fairway service and its main propulsion is a battery electric and diesel-hybrid drive. Both systems can be used individually or together in boost mode for high performance. The hydraulic bow and stern thrusters enable precise manoeuvring of the boat. The thrusters and the crane on the deck are powered from the boat’s 400 Vac electrical system.
Intelligent Electrical System Enables Zero Emission Mobility
The work boat is fitted with an upgradeable 198 kWh Li-ion battery system, which is connected to the boat’s 400 Vac electric grid through a combined Danfoss Editron Active Front End (AFE) and MicroGrid (uG) inverter and transformer.
When electricity is provided from the boat’s diesel generator or through a shore connection, the inverter is used as a battery charger (AFE mode). During zero emissions operation, the 400 Vac electric grid for the boat is generated from the high voltage battery by the inverter (uG mode).
”The customer was looking for a boat that could operate in an environmentally friendly way in areas where diesel emissions are not permitted.
"Hevtec took on the challenge and designed and implemented a hybrid system for the boat, combining cutting-edge technology with environmental sustainability.
"The satisfied customer was so impressed with the boat’s performance that in 2024 they decided to further expand the battery package. This extended the boat’s range and increased its performance even more.”
Jan Wargh
Sales Manager
Kewatec
Stabile and Quiet Sailing with Power Management System
The boat’s grid load is actively monitored with the Hevtec Control System. Power spikes are induced in the electrical system while using the powerful bow and stern hydraulic thrusters, as well as the deck crane. Our proprietary Power Management Software helps maintain the electrical grid of the boat stable even under sudden high loads, while the available excess power is harnessed to charge the high voltage battery.
Intelligent Electrical System Enables Zero Emission Mobility
The work boat is fitted with an upgradeable 198 kWh Li-ion battery system, which is connected to the boat’s 400 Vac electric grid through a combined Danfoss Editron Active Front End (AFE) and MicroGrid (uG) inverter and transformer.
When electricity is provided from the boat’s diesel generator or through a shore connection, the inverter is used as a battery charger (AFE mode). During zero emissions operation, the 400 Vac electric grid for the boat is generated from the high voltage battery by the inverter (uG mode).