Drives for marine power conversion and generation

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Shore power supply makes for clean harbors

When using drive technology in a shore-supply solution, ships can source clean energy from local grids. The ship’s main generators can be switched off completely to prevent unnecessary local NOx and carbon emissions and noise pollution while the vessel is docked.

Danfoss Drives provide inverters and drives for power conversion, which convert the 50Hz shore power to the 60Hz power typically used onboard sea going ships. Grid converters use Active Front End AFE technology with proper software able to create and synchronize the AC-grid (micro grid) to the ship's grid.  

2-month ROI for FAYARD A/S shipyard

Electric shore supply system using VACON® NXP Air Cooled drives meets peak demands while minimizing baseline power consumption.


  • VACON® NXP Air Cooled
    VACON® NXP Air Cooled
    Designed for a broad range of demanding applications, focusing on higher power sizes and system drives.
    An enclosed drive designed for demanding applications that includes options for Active Front Ends and low harmonic solutions.
  • VACON® NXP Common DC Bus
    VACON® NXP Common DC Bus
    Enables system integrators, machine builders and OEMs to design and build efficient industrial drives systems. Active Front-end (NXA), Non-regenerative Front-end (NXN), Brake Chopper (NXB) and Inverter (NXI) configurations are available.
  • VACON® NXP DC/DC Converter
    VACON® NXP DC/DC Converter
    Maximizes the energy yield in hybrid solutions and helps improve performance by bringing energy support close to the consumption.
  • VACON® NXP Grid Converter
    VACON® NXP Grid Converter
    Air- and liquid-cooled drives specifically designed for smart grid, energy storage, power conversion and marine energy management applications.

Case studies

  • Royal IHC Scheldt River pioneers new environmental standards in dredging with flexible MV drives
    A Danfoss medium-voltage drive solution boosts an inboard dredge pump and increases energy efficiency with a small footprint, minimum weight and low volume - while being robust enough to withstand the harsh marine environment.
  • Future of the Fjords meets 2026 emission targets, today
    Future of the Fjords meets 2026 emission targets, today
    This world-first fully-electric carbon fiber vessel safeguards the pristine Norwegian fjord environment, ensuring zero emissions.
  • Shore power supply is a cost-effective solution for Maersk Supply Service’s parked vessels
    Shore power supply is a cost-effective solution for Maersk Supply Service’s parked vessels
    Thanks to shore power supply during parking, Maersk Supply Service can keep diesel exhaust pollution, noise nuisance and maintenance costs to a minimum.
  • Astrid Helene - fully electric workboat
    Goodbye to NOx gases
    Grovfjord Mekaniske Verksted, Norway, has designed one of the world’s first fully electric workboats. No engine noise, no diesel fumes, zero emissions. It’s electrification at sea. And drives from Danfoss have helped make it happen.
  • Battery retrofit saves fuel and improves air quality
    Battery retrofit saves fuel and improves air quality
    Denmark’s shortest ferry route is now a pioneer of battery power.
  • Caledonian Maritime Assets Limited (CMAL)
    38% fuel savings and emission reductions for CMAL ferries
    CMAL ferries use 38% less fuel than conventional vessels and emissions are reduced by a similar amount.

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