2007 · 23 citations · 15 references
EngineeringElectrical EngineeringMechanical EngineeringElectric MachinesFinite Element AnalysisFinite Element MethodsElectromagnetic Torque ProductionHeuristic OptimizationMachine WindingsMagnetic Circuit AnalysisRotordynamicsShape OptimizationAir Gap AnalysisAverage Torque ModelingBoundary Element AnalysisCurrent DensityElectromagnetic Torque CalculationFinite Element Analysis Of MachinesMagnetic Flux DensityTorque
The Schwarz-Christoffel method is implemented in a Monte Carlo electric machine slot shape search algorithm attempting to maximize average torque under constrained flux density in a two-dimensional developed machine cross-section. A fixed slot current density is enforced, and the slot shape is varied over a twelve-variable search space. Rotor motion is simulated by changing the position of the machine air gap polygon's rotor vertices while maintaining both a simply-connected polygon and a 90deg shift between stator and rotor q-axis currents. Rotor force is calculated by integrating Maxwell's stress tensor along a closed path enclosing the rotor. A Monte Carlo search with 11,050 points is carried out and a minimum cost horizon curve is deduced from the data. A brief history and context for the Schwarz-Christoffel approach is given with a comparison to the finite element and boundary element methods.
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Michele Goano, Francesco Bertazzi, P. Caravelli et al. · IEEE Transactions on Microwave Theory and Techniques · 2001 · 45 citations
Engineering, Computational Engineering, Electrical Engineering +17