Frequency Converter

  Enquiry / contact me

Gives Power to Fishing Vessel's Thruster

Motors & Drives

Frequency Converter
Frequency Converter

When the generators of the fishing vessel were found to be too small, a VLT AutomationDrive frequency converter solved the problem. VLT earns its keep aboard Denmark’s largest fishing vessel, when it sets off on a typical 14-day jaunt at sea. The “S 349 Gitte Henning #8” is designed for ocean (pelagic) fishing, with rights to no less than 10% of the national ocean fishing quota.

The trawler was built as a turnkey project by Western Baltija Shipbuilding, Lithauania and delivered in April 2014. The ship belongs to Henning Kjeldsen in Skagen, Denmark.

As the sizing of the generators was optimized for best energy efficiency – without a large power reserve - the shipyard discovered that the ship’s generators were too small to start the 1.47MW variable pitch azimuth thruster with a soft starter or star/delta starter. But it was out of the question to rebuild the ship and install larger generators.

Danfoss and the electrical contractor, SEMCO Maritime A/S helped to find a practical solution. Using a VLT frequency converter to limit the starting current, whilst starting the thruster with the propeller blades in neutral position, it was possible to retain the specified generators.

The solution required a 560kW VLT AutomationDrive frequency converter with a DEIF synchronizing controller and bypass contactors. Both could be installed in the thruster switchboard with no requirement for additional space. Additional Danfoss products installed included two 400kW VLT drives for the refrigeration compressors, and an active harmonic filter to meet the class requirements.

Posted on October 28, 2014 - (373 views)
Danfoss Drives A/S
Ulsnaes 1
6300 Graasten - Denmark
View full company profile
Related articles
Guiding Energy and Data at High Speeds
Electronic Drives for Bicycles
Optimized Solution of Constant Force Spring for Carbon Brush
Electric Track Drive
Planetary Gearboxes
Power Density in Robotics
Dimensioned and Efficient Drive Systems
Power Spring for Draw Wire Encoder Application
Polyvalent Compact Machine Controller
Linear Conveyor Solution Book
Ecological Synchronous Reluctance Motors
Top-notch Products
Power in new Dimensions - BXT Motor Family
Sure Signs of Excellence: Top Notch Products Offering Added Value
Every beginning needs drive
Coil Winding Expo Berlin, June 19 to 21 2018
Drives & Controls
BSR Series
Synchronous Reluctance  Motors - Be Fast in an Efficent way
All-in-one Dezentralized Drive System
Ecological Synchronous Reluctance Motors
Polyvalent Compact Machine Controller
Shortening Production Life Cycles by 2 Seconds
Driving Amusement Safely: The Thrill is Guaranteed!
Danfoss Drives Presented its Latest Novelties at SPS IPC Drives 2018
Interroll Launches its Versatile Drive Platform at Sauber Motorsport
Brushless Flat DC-Servomotors with more torque
Power in new Dimensions - BXT Motor Family
Integrated Servo Motor
Bonfiglioli BSR Synchronous Reluctance Motors