PTI-Take Me Home
The permanent magnet rotor is mounted on the intermediate shaft of the propulsion system. Mass and inertia are very low and thus the impact on propulsion system torsional vibration calculations (TVC) remains minimal. No additional bearings are required, thus the propeller shaft system design remains uncompromised. The generator housing, consisting of a compact, feet mounted stator package, including the rotor and intermediate shaft, is positioned on the generator bed in the propeller shaft line and connected via flanges.
Solution Two is an Auxiliary Power Drive (APD) system that gives propulsion power if the Main Engine is out of operation. This solution essentially enables a ‘Take Me Home’ propulsion operation for product tankers, as well as ensuring a safe return-to-port propulsion for any other ship type by running the WE Drive® in the Power Take In (PTI) mode. Furthermore, in PTI mode the WE Drive™ system converts Auxiliary Engine power to propulsion power by employing the Shaft Generator as a motor: the electrical power is conveyed where needed thanks to the state-of-the-art Active Front End (AFE) drive technology. Solution Two also includes the functionality outlined in Solution One, covering the energy efficient operation of any ship equipped with direct-driven propulsion combined with a Shaft Generator system.
Our solutions build on widely proven technologies and are applicable for most ship types and propulsion machinery (e.g. low speed direct driven propeller with 2-stroke Main Engine, or medium speed reduction gear driven propeller with 4-stroke Main Engine).
WE Tech solutions utilise variable frequency drive technology (WE Drive®), permanent magnet generator technology, DC-link power distribution and Energy Management System(EMS).
With our domain expertise, you can get a ship with an energy system built the way it should.
Variable frequency drive technology for generator/motor applications is a compact and robust modular design.
The variable speed permanent magnet generator is lightweight, and compact-sized with the highest efficiency over the full speed and power range. It is virtually maintenance-free. We also offer solutions based on synchronous and asynchronous generator technology.
We use the latest lithium-ion technology from the Energy Storage System (ESS) suppliers. With a DC-DC converter, we integrate the ESS into our solution.
With the Energy Management System(EMS), we control various operation modes of the ship as well as start/stop sequences, etc. The EMS also interfaces with other control systems on board a ship.
Shore power is conditioned for the vessels’ electrical system via the WE Drive®. Vessels become unaffected by the variations in voltages and frequencies of the national power grids worldwide – shore power is always matching.
Fuel Cell Integration via DC/DC conversion to the ship energy efficient power distribution system. Seamless operations utilising Fuel Cells and ESS combinations for zero emission power.
We have been focusing on lowering emissions for years by providing cost-effective and sustainable lifetime solutions to the shipping industry. Our benchmarking solutions have already been applied to more than 150 vessels worldwide.