Design Aspects of Double-Sided Rotor Radial Flux Air-Cored Permanent-Magnet Wind Generator

• Published in: IEEE transactions on industry applications Vol. 47; no. 2; pp. 767 - 778
• Main Authors: Stegmann, J A, Kamper, M J
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-03-2011; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Air cored; Coils (windings); Copper; design; Design engineering; Design optimization; double rotor; finite element (FE); Flux; Generators; Magnetic flux; Mathematical analysis; Mathematical models; Optimization; permanent magnet (PM); radial flux; Rectifiers; Rotors; Stator windings; wind generator
• ISSN: 0093-9994; 1939-9367
• DOI: 10.1109/TIA.2010.2103541

The electromagnetic and mechanical design aspects of optimally designed double rotor radial flux permanent-magnet wind generators with nonoverlap air-cored (ironless) stator windings are analyzed in this paper. An accurate analytical design optimization method is proposed. The analytical model is confirmed by finite-element analysis. It is shown, among other things, that the electromagnetic design, and not the mechanical design, determines the rotor yoke dimensions and, thus largely, the mass and cost of the generator.