FEM simulations and experiments of different loading conditions for a 12 kW direct driven PM synchronous generator for wind power
2009 (English)In: International Journal of Emerging Electric Power Systems, ISSN 1553-779X, Vol. 10, no 1, 3- p.Article in journal (Refereed) Published
Results from experiments on a direct driven permanent magnet synchronous generator are presented. Dynamic simulations have been performed using the finite element method in order to study the generator. The simulations are performed by using an electromagnetic model, which is described by a combined field and circuit equation model and is solved in a finite element environment. The stator winding of the generator consists of circular cables and the rotor has surface-mounted, arched, permanent magnets. A complete experimental setup has been used consisting of a motor, a frequency converter, a gearbox and electrical loads. The generator is connected to a purely resistive load. Measurements have been performed for different rotational speeds and different loads. Furthermore, the generator has been studied for the realistic wind turbine loading conditions for operation at the optimum tip speed ratio. The variable speed operation in a wind turbine is evaluated and discussed. The agreement between experimental results and simulations based on finite element calculations is high, indicating precise simulations. The measurement errors are calculated and discussed. Furthermore, other sources of error are suggested and discussed that could explain the differences between the simulations and the measured data. 2009 The Berkeley Electronic Press. All rights reserved.
Place, publisher, year, edition, pages
2009. Vol. 10, no 1, 3- p.
Electric generators, Engines, Experiments, Finite element method, Magnetic devices, Measurement errors, Permanent magnets, Steel structures, Synchronous generators, Wind power, Wind turbines
Engineering and Technology
IdentifiersURN: urn:nbn:se:uu:diva-97456DOI: 10.2202/1553-779X.1958OAI: oai:DiVA.org:uu-97456DiVA: diva2:172413
Compilation and indexing terms, Copyright 2009 Elsevier Inc. 20091712047064 Circuit equations Direct-driven Dynamic simulations Electrical loads Electromagnetic models Experimental set-up FEM simulations Finite element calculations Finite elements Generator Loading conditions Measured datum Permanent magnet synchronous generators Precise simulations Purely resistive loads Rotational speed Simulations Stator windings Synchronous Tip-speed ratios Variable speed operations Vertical axis wind turbine Wind turbine loadings2008-09-052008-09-052014-01-17Bibliographically approved