TY - JOUR
T1 - Design of a magnetic lead screw for wave energy conversion
AU - Holm, Rasmus Koldborg
AU - Berg, Nick Ilsoe
AU - Walkusch, Morten
AU - Rasmussen, Peter Omand
AU - Hansen, Rico Hjerm
PY - 2013/11/1
Y1 - 2013/11/1
N2 - This paper deals with the development of a magnetic lead screw (MLS) for wave energy conversion. Initially, a brief state of the art regarding linear permanent-magnet generators and MLSs is given, leading to an introduction of the MLS and a presentation of the results from a finite-element analysis used to find the magnetic forces. Furthermore, the force per magnet surface area measure is presented as a better alternative to the force density measure, which is often used for linear magnetic devices. Based on this, the overall design of a 500-kN MLS is presented focusing on the bearing supports used to compensate for the magnetic attraction forces and the resulting deflection of the rotor. In addition, in order to avoid some of the assembling-related disadvantages of using surface-mounted magnets, an embedded-magnet topology is proposed. To demonstrate the technology, a scaled 17-kN MLS is presented together with experimental results.
AB - This paper deals with the development of a magnetic lead screw (MLS) for wave energy conversion. Initially, a brief state of the art regarding linear permanent-magnet generators and MLSs is given, leading to an introduction of the MLS and a presentation of the results from a finite-element analysis used to find the magnetic forces. Furthermore, the force per magnet surface area measure is presented as a better alternative to the force density measure, which is often used for linear magnetic devices. Based on this, the overall design of a 500-kN MLS is presented focusing on the bearing supports used to compensate for the magnetic attraction forces and the resulting deflection of the rotor. In addition, in order to avoid some of the assembling-related disadvantages of using surface-mounted magnets, an embedded-magnet topology is proposed. To demonstrate the technology, a scaled 17-kN MLS is presented together with experimental results.
KW - Embedded magnets
KW - Magnetic finite-element analysis
KW - Magnetic gears
KW - Magnetic lead screw (MLS)
KW - Permanent-magnet (PM) linear machines
KW - PMs
KW - Wave energy
U2 - 10.1109/TIA.2013.2264272
DO - 10.1109/TIA.2013.2264272
M3 - Journal article
AN - SCOPUS:84890108936
SN - 0093-9994
VL - 49
SP - 2699
EP - 2708
JO - IEEE Transactions on Industry Applications
JF - IEEE Transactions on Industry Applications
IS - 6
M1 - 6517464
ER -