DC Electric Propulsion

DC Electric propulsion – Permanent Magnet Propulsion Motors for highest efficiency

Electrification Solutions

DC Electric Propulsion

Utilises main generator running on variable speed with efficient DC power distribution. DC Hybrid Electric propulsion combining efficient DC power distribution with, for example, fuel cells and energy storage.

Technologies Used

Permanent Magnet Propulsion Motors
WE Drive™
Variable Speed Auxiliary Generators
AC power for hotel load
Ship-wide DC power distribution system
Energy storage system
Shore Connection

Customer Benefits

Permanent Magnet Propulsion Motors for highest efficiency
Generator power is rectified and fed into the DC-bus and thus becomes speed/frequency independent
Full optimisation of the speed for the internal combustion engine in relation to the propeller speed
Reduced weight as no transformer is needed and with highest possible energy density with permanent magnet machines
Low THD levels because AFE low harmonic drives are used

Options

Shore power solutions

Solutions Leading Marine Electrification

WE equip your ship for success.

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-bus 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.

WE Drive®

Variable frequency drive technology for generator/motor applications is a compact and robust modular design.

Variable Speed Generator

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.

Energy Storage Solutions

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.

Energy Management System

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 Solution

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 Solution

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.

Reference cases

Solutions applied on over 300 vessels worldwide

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 300 vessels worldwide.

Finnish Defence Forces

TypeMultipurpose corvette
OwnerFinnish Defence Forces, Finland
SolutionsSolution Five Hybrid Electric Propulsion
ShipyardRauma Marine Construction Oy, Finland

HSHI H8124, SK Shipping Co., Ltd

Type86,000 CBM LPG Carrier
OwnerSK Shipping Co., Ltd, Korea
SolutionsSolution One with Direct Drive PM Shaft Generator
ShipyardHyundai Heavy Industries Co., Ltd, Korea

M/V Pacific Ineos Grenad

Type98k CBM Ethane Carrier
OwnerPacific Gas
SolutionsSolution One PTO mode with Direct Drive PMSG
ShipyardJiangnan Shipyard Group Co. Ltd, China

Hull 0315847, Maran Tankers Management Inc.

Type155500 dwt Suezmax Tanker
OwnerMaran Tankers Management Inc., Greece
SolutionsSolution One PTO with the Direct Drive PM Shaft Generator and Shore Connection
ShipyardNew Times Shipbuilding Co., Ltd, China

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