Analytical Modeling of a Novel Transverse Flux Machine for Direct Drive Wind Turbine Applications
This paper presents a nonlinear analytical model of a novel double-sided flux concentrating Transverse Flux Machine (TFM) based on the Magnetic Equivalent Circuit (MEC) model. The analytical model uses a series-parallel combination of flux tubes to predict the flux paths through different parts of the machine including air gaps, permanent magnets, stator, and rotor. The two-dimensional MEC model approximates the complex three-dimensional flux paths of the TFM and includes the effects of magnetic saturation. The model is capable of adapting to any geometry that makes it a good alternative for evaluating prospective designs of TFM compared to finite element solvers that are numerically intensive and require more computation time. A single-phase, 1-kW, 400-rpm machine is analytically modeled, and its resulting flux distribution, no-load EMF, and torque are verified with finite element analysis. The results are found to be in agreement, with less than 5% error, while reducing the computation time by 25 times.
- Research Organization:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Wind and Water Technologies Office (EE-4W)
- Contributing Organization:
- University of Akron, Akron, Ohio; North Carolina State University, Raleigh, North Carolina
- OSTI ID:
- 1215359
- Report Number(s):
- NREL/CP-5D00-64745
- Journal Information:
- IEEE Energy Conversion Congress and Exposition (ECCE), Vol. 2015; Conference: IEEE Energy Conversion Congress and Exposition, Montreal, QC (Canada), 20-24 Sep 2015; ISSN 2329-3721
- Publisher:
- IEEE
- Country of Publication:
- United States
- Language:
- English
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