Magnetics in a Green Future


Nov 2nd 2015 - Nov 3rd 2015

Copenhagen, Denmark

Updated 02/11/15

Sustainability is an important driver for developing high technology solutions with magnets. In Denmark there is a long tradition for producing sustainable energy with wind-turbines and saving energy by using advanced magnetic systems. Within the last decade, we have also worked with reusing the expensive rare earth materials and investigating powerful solutions with superconductive materials. On 2nd and 3rd November The Technical University of Denmark in Copenhagen will host a joint UK Magnetics Society / Danish Magnetics Society event where we will focus on Magnetics in a Green future.

An informal networking dinner will be held on the evening of 2nd November.

Tours of Danfysik and the facilities at DTU Lyngby will be available.


DTU Lyngby
The Electrical machines laboratories at the Technical University of Denmark are part of the PowerLab.DK research facilities, which includes state of the art power systems control room, two high voltage laboratories, and newly opened electric vehicles laboratory with a fleet of electric vehicles, to name a few. The tour participants will have the chance to hear about several ongoing research projects, covering two test rigs for electrical machines, permanent magnet couplings and gears, and a one of a kind experimental setup of a 2-pole section of 2 MW superconducting wind turbine generator.


We start with a short presentation of Danfysik by Sales. Then we visit our particle therapy test facility made for testing magnets, power supplies, beam diagnostic and control software for the Siemens cancer therapy centers. After this we will take a tour of our production facility including production of high stability accelerator power supply and then magnet assembly. Besides electromagnets, we will look at the production and test of small superconducting magnets, at small permanent dipole and quadrupole magnets and the permanent dual magnet-array in-vacuum insertion device that we are currently producing. Finally we will see the test facility needed for the validation of accelerator magnets.


  • Flemming Buus Bendixen, Sintex A/S
  • Nikolaj Zangenberg, Danish Technological Institute (supported by the Danish Agency for Science, Technology and Innovation)

Venue Address

Room 020
Building 329A
Technical University of Denmark
2800 Kongens Lyngby


DTU Copenhagen at Lyngby is to the north of Copenhagen in Denmark. A location map can be found here.

Travel advice to get to Lyngby can be found at DTU Lyngby’s website.

Addresses and directions specific to this seminar, and travelling from Copenhagen Airport to the venue are in this pdf.

In short: Take the Metro to Norreport Station. Walk out the station to the right where you catch the 150S or 173E Bus. Get off the bus at Raevehojvej DTU Lyngby.


Ermitage Scandic hotel

Klampenborgvej 230, 2800 Kongens Lyngby, Denmark

Seminar Supported by

Center for Electric Power and Energy, Department of Electrical Engineering, Technical University of Denmark


Neodymium Level


Grundfos A/S


Linear Magnetic Actuator for Vehicle Suspension
by Nick Ilsø Berg of Aalborg University

The presentation will be about the development of a linear magnetic actuator for Vehicle Suspension, for improvement of ride comfort and safety with the benefit of harvesting energy from road irregularities. The linear device is build using a magnetic lead screw and a permanent magnet synchronous machine.

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End-of-Life Strategy for Rare-Earth Permanent Magnets: Reuse as an Alternative to Chemical Recycling
by Stig Högberg of DTU Lyngby, Electrical Engineering

The supply of raw materials for rare-earth permanent magnets (PMs) has suffered from a world-spread doubt stemming back to the export restrictions enforced by China in 2011, causing severe price fluctuations. Countless efforts to ensure the supply have been presented since then. As an alternative to design-to-reduce rare-earth materials, recycling is now making its way into research and industry. This presentation outlines the current trends in recycling rare-earth PMs, and demonstrates the challenges of producing recycled PMs of comparable magnetic performance by chemical processes. Direct reuse of PMs is discussed as an alternate route for recycling, which avoids the energy-intensive and environmentally unfriendly chemical processes.

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Zero-Power Tunable Optics project
by Ben Shepherd of Science and Technology Facilities Council

ZEPTO aims to build accelerator magnets (dipoles and quadrupoles) with highly adjustable field strengths based on permanent magnets.

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Characterisation of Hard Magnetic Materials in Direct Drive Wind Turbine
by Adriana Cristina Urda of Siemens Wind Power A/S

The presentation will focus of the characterization of permanent magnets used in wind power direct drive generators. Details like performance and life time testing will be addresses together with their problems and challenges.

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Superconducting magnetic gears, bearings and other magneto-mechanical devices
by Jose Luis Perez-Diaz of UAH & MAGSOAR

Conventional Mechanical devices relays on friction, viscosity and lubrication conditioning working life and maintenance of bearings, gears, sliders or dampers. Cryogenic environments strongly limit lubrication and require frequent maintenance operations quite unsuitable for Space applications. Mechanisms based on Superconductors and magnets naturally overcome all these problems just avoiding any contact and friction between moving elements. A complete set of magneto-mechanical devices has been engineered to provide ultra-long life mechanisms for cryogenic environment. They are able to work in extreme conditions and do not wear. Additionally they present other interesting properties like anti-jamming behaviour, tuneable vibration damping, powder and dirt resistance or through-wall operation. In this presentation results of several applied magneto-mechanics projects recently developed for Space and Aeronautics are presented demonstrating some practical uses of these devices.

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Superconductors for Wind turbines
by Asger Abrahamsen of DTU Wind Energy, Technical University of Denmark

The INNWIND.EU project is investigating how to reduce the Cost Of Energy (CoE) from future large offshore wind turbines in the power range P = 10-20 MW and installed in 50 m of water. The drive trains of these turbines will have to provide a torque in the range from 10-30 MNm and here superconducting direct drive is seen as a possibility. The choices of superconducting wires will be discussed and the INNWIND.EU example of a 10 MW generator based on the MgB2 superconducting will be presented.

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MIM of NdFeB magnets in the REEgain consortium
by Martin Sørensen of Teknologisk institut

The REEgain consortium, sponsored by the Danish Agency for Science, Technology and Innovation, works with various aspects of the use and production of strong permanents magnets. Eg. supply of the necessary rare earth elements from Greenland, improved reliability and lifetime of permanent magnets, and advanced process technologies, enabling complex geometries for strong permanent magnets. The presentation will present the work of REEgain on using MIM for the production of NdFeB magnets with a focus on the special challenges compared to e.g. steel MIM and how these challenges have been addressed in REEgain.

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Superconducting Magnetic Bearings
by Maria Sparing of DTU RisøLeibniz-Institut für Festkörper und Werkstoffforschung Dresden

The subject of my talk will be possible applications and demonstrators for Superconducting Magnetic Bearings. After a brief introduction to the concept of superconducting levitation and pinning, I’ll focus on: • superconducting magnetic bearings as twist element in the textile technological process of ring spinning • our test drive facility “SupraTrans II": a 80-m-long test and demonstration oval circuit track with a turnout and a vehicle on which passengers or goods can be transported • a short excursus on other demonstrator projects, like the Lexus hover board

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Are magnets green? New environmental and efficiency demands for sintered NdFeB magnets
by Mr Feddo Bax of JL MAG Rare-Earth Co. Europe B.V.

Green applications require green components and in our case green sintered NdFeB magnets. But how green are they? Green magnets mean green magnet raw material supply chain, recycling and efficient usage of raw materials in production. We will try to link green applications with green magnet supply chain, give and insight in the main raw material processes as well as some insight in the current mine operations in China. They are responsible for most of the RE material supply in the world and determine the future of green technologies depending on permanent sintered NdFeB magnets. Recycling and efficiency in Heavy RE materials will conclude the presentation.

Efficient Switching Valves for Variable Displacement Machines in Future Fluid Power Systems
by Daniel Beck Rømer of Aalborg University

The presentation treats a new type of switching valves, utilizing permanent magnets for improved energy efficiency. These valves are to be used in future variable displacement machines in the field of fluid power, where energy efficiency must be improved to facilitate more environmentally-friendly solutions.

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Rare Earth Elements Processing, Production Recycling and Sustainability: An Industrial Review
by Dr Badri Veluri & Keld Folsach Rasmussen of Technology Specialist, Grundfos A/S

Life cycle based on water and the related energy consumption is significantly higher in today’ world. Mining in the natural environment comprises the majority of acquisition of REEs and, like most mining operations, results in a large quantity (greater than 90 percent) of excess and un-used materials. Due to the increased, focus on the environmental protection and sustainability aspects the need for managing resource development and mitigation of impacts during the acquisition, use, and disposal of REEs. The study compile current information to develop a strategy for effective utilization of REE resources and reducing potential environmental impacts by adopting the emerging efficient production technologies.

Green Magnets at Danfysik
by Franz Bødker of Danfysik

Particle accelerators are mostly used in research but industrial as well as healthcare applications are growing. Accelerator magnets are mostly made as electromagnets with little attention to power consumption. Permanent magnet based accelerator magnets can be used to reduce power consumption and also reduce the complexity of installation and operation. This application requires magnets with high field quality and high field stability at a cost that is comparable to the electromagnetic alternative. Together with Sintex and two Danish universities we have in a 3 year research project developed a commercially mature fixed field dipole design. Results from this work are presented together with permanent magnet costumer products that has been developed based on this experience. Superconducting magnet projects and permanent synchrotron insertion devices are also presented.


TimeSession TitleSession Host
11:00Registration & Coffee
11:50WelcomeFlemming Buus Bendixen, Sintex A/S
12:00Automotive Linear ActuatorNick Ilsø Berg, Aalborg University
12:30End-of-Life Strategy for Rare-Earth Permanent Magnets: Reuse as an Alternative to Chemical RecyclingStig Högberg, DTU Lyngby
14:00Zero-Power Tunable Optics projectBen Shepherd, Science and Technology Facilities Council
14:30Characterisation of Hard Magnetic Material in Direct Drive Wind TurbineAdriana Cristina Urda, Siemens Wind Power A/S
15:30Superconducting and Magnetic GearsJose Luis Perez-Diaz, Magsoar
16:00Superconductors for WindturbinesAsger Bech Abrahamsen, DTU Risø
16:30Introduction to DTU LyngbyNenad Mijatovic, DTU Lyngby, Electrical Engineering
16:45Tour of DTU Lyngby facilitiesStig Högberg, DTU Lyngby
17:45Tour finishes; Break
19:15Informal Dinner at Postgaarden restaurantSponsored by Danfysik and Grundfos A/S
Tuesday November 3rd 2015
08:30The REEgain projectMartin Sørensen, Teknologisk institut
09:00Superconducting Magnetic BearingsMaria Sparing, Leibniz-Institut für Festkörper und Werkstoffforschung Dresden
10:00Rare Earth Elements Processing, Production Recycling and Sustainability: An Industrial Review Badri Veluri, Grundfos A/S
10:30Coil and Magnet for Digital DisplacementDaniel Rømer, Aalborg University
11:00HRE Reduction by Advanced Magnet Manufacturing Technology Feddo Bax, JL MAG Rare-Earth Co. Europe B.V.
12:30Green MagnetsFranz Bødker, Danfysik
13:00Depart for Danfysik
13:45Tour of Danfysik facilitiesFranz Bødker, Danfysik
15:15Tour finishes. Transport from Danfysik to Copenhagen Airport & Copenhagen Central Train Station
16:15ESTIMATED Arrival at Copenhagen Airport
17:00ESTIMATED Arrival at Copenhagen Central Train Station


Type Standard Fee Group Discount
(3+ delegates)
Member (UKMS / DMF) £145.00 N/A
Member Student / Retired (UKMS / DMF) £35.00 N/A
Non-Member £195.00 N/A
Non-Member Student / Retired £75.00 N/A
Exhibiting £65.00 N/A
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