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A low cost and highly efficient TFM generator for wave power
KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems. (eMaDLab)ORCID iD: 0000-0002-4016-0004
2016 (English)In: Proceedings of the 3rd Asian Wave and Tidal Energy Conference, 2016, 822-828 p.Conference paper (Refereed)
Abstract [en]

A force-dense and very efficient direct drive transverse flux generator aimed for wave power applications is being developed at the Royal Institute of Technology in Sweden. The machine is specialized for low speeds, and the design of a linear version is presented in this paper. The basic electromagnetic design is given as well as an overview of the mechanical design. The benefits of such machines at low speeds are described in detail. The challenges that the machine type have are also presented, and suggestions are made on how they can be handled. Geometrical and calculated performance data is given for a prototype machine that is to be constructed during 2017. The possibility of using the machine type for control methods such as reactive control is also discussed. The machine is predicted to have an efficiency of 97-98% at speeds as low as 0.7 m/s, and a shear stress of 100-120 kN/m², corresponding to 200-240 kN/m² if only half the active area is counted as active which is custom for such machines.

Place, publisher, year, edition, pages
2016. 822-828 p.
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-203772OAI: oai:DiVA.org:kth-203772DiVA: diva2:1082492
Conference
The 3rd Asian Wave and Tidal Energy Conference AWTEC 2016
Funder
Swedish Energy Agency, P40430-1
Available from: 2017-03-16 Created: 2017-03-16 Last updated: 2017-03-16

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