Three different operation modes are possible. The transition between modes is smooth and is automatically selected by the PHT controller to optimize the propulsion of the vessel.
When the diesel engine is running, the clutch is engaged and drives directly the marine gear or transmission. Thanks to the PHT, the diesel engine also drives the electrical generator.
The PHT in electrical mode disconnects the diesel engine by disengaging the clutch, thus the diesel engine can be shut down
In boost mode the clutch is engaged so the diesel engine is running. The electric motor is also running synchronised with the diesel engine and thus increasing the torque at the transmission or marine gear.