PTI for larger vessels

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Very high energy efficiency as you can choose the most suitable power source at any time

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The best of both worlds: diesel -  electric

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Better HSE on board the boat with electric propulsion.

A PTI hybrid propulsion system provides very high energy efficiency by allowing the most suitable power source to be selected at any time based on the vessel's current operating pattern, with the best of both worlds; diesel - electric.

Frydenbø Industrier AS_Kristoffer Antonsen_www.kvassfoto.no--11

PTI Hybrid

A Frydenbø PTI hybrid solution typically consists of one or two diesel main engines with a geared electric motor. This is combined with a battery pack and a marine generator set for power generation. Such a system allows for many operating modes and efficient operation.

Diesel-mechanical (DM) mode

Diesel engine for propulsion and power take-off (PTO)
In DM mode, the diesel engine provides propulsion and operational power take-off on the gear. The PTO can be used to store electrical power back into the vessel's electrical system, which can then be stored in batteries for later use. The PTO can also be used to drive a hydraulic pump.

Diesel-electric (DE) mode

The electric motor provides propulsion through Power Take In (PTI).
In DE mode, propulsion is provided by the electric motor while the batteries are charged from the vessel's diesel generator set. This mode is ideal for slow cruising with a generator running at optimum speed. Fuel consumption is kept to a minimum and the operating hours of the main engines are significantly reduced.
The PMS/EMS system can use surplus power from generators to store energy in the batteries if the grid load is below optimum generator load.

Electric battery mode

Electric motor for propulsion in PTI mode powered by the battery pack.
In electric battery mode, the battery pack drives the electric motor. This mode is intended for low-speed operations of relatively short duration with frequent maneuvering in, for example, port areas, or for long-term quiet cruising during sightseeing, or in emission-controlled/restricted areas.
The power and range depend on the size of the battery pack, which is calculated individually per vessel based on the operating pattern. The battery status is continuously monitored by the EMS system. When the battery reaches a low SOC (state of charge) level - the diesel generator will start and fully charge the battery again under optimal load to restore the batteries SOC. electricity to the rest of the system. When the batteries are fully charged, the generator stops, and the system is operated using power from the batteries. The cycle is automatically repeated as needed.

Frydenbø Industri_Foto Veronika Stuksrud_009

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