The thesis of D.J. Bang from 2010 discuss several transverse flux principles.
1. The basic structure of the TFM1 model is found in Fig. 3-3-50: Single-sided flux-concentrating TFPM machine with single windings and claw poles [Mad 1999]). The only principal difference compared to the TFM1 model is the use of claw poles instead of straight poles.
[Mad 1999] C. P. Maddison, “Transverse flux machines for high torque applications”, Ph.D. dissertation University of Newcastle upon Tyne, UK, 1999.
2. The flux concentrating principle of the TFM1 rotor is also found in Fig. 3-3-3: A slotted flux-concentrating RFPM machine [Spo 1996a]
[Spo 1996a] E. Spooner and A. C. Williamson, “Direct coupled, permanent magnet generators for wind turbine applications”, IEE Proc.-Electr. Power Appl., Vol. 143, No. 1, pp. 1-8, January 1996.
Patents and Articles
A number of transverse flux patents has been filed the last 30 years. Most patents use a transverse flux model different from TFM1.
The Høganes patents from 2009 and 2010 are very similar to the prototype TFM1 concept. The patent uses straight poles, 3 phase configuration and iron powder for the magnetic flux.
Patent: Herbert Weh
Patent: “MACHINE WITH TRANSVERSE FLUX”. Herbert Weh
Article: “STUDY OF PERMANENT MAGNET TRANSVERSE FLUX MOTORSWITH SOFT MAGNETIC COMPOSITE CORE”. Australasian Universities Power Engineering Conference (AUPEC 2004). Y.G. Guo and J.G. Zhu.
Patent: “Stator arrangement and rotor arrangement for a transverse flux machine”.
Patent: “Permanent magnet rotor with flux concentrating pole pieces”. Inventors: Lars-Olov Pennander, Alan G. Jack, Glynn James Atkinson. Original Assignee: Hoganas Ab.
Patent: “Multi-phase stator Device”. Original Assignee Höganäs Ab.
Article: “Advanced motor design: New Motors Reach New Applications”. Dan Jones, Incremotion Associates.
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