11:20am - 11:40amID: 106
/ Oral Session 1-2: 1
Abstract submission for on-site presentation
Topics: Software methodology, Theoretical aspects and fundamentalsKeywords: Automatic Differentiation, Dynamic systems, Frequency analysis, SQP Optimization
Optimization on frequency constraints with FFT using Automatic Differentiation on hybrid ODE applications
Lucas Agobert, Benoît Delinchant, Laurent Gerbaud
Grenoble Laboratory of Electrical Engineering, France
Optimizing electrical systems represented by ODE and events, using their frequency spectrum is an important issue for designers. This paper presents a methodology to answer to this issue. Using gradient-based optimization algorithm, the paper proposes to simulate the electrical system according time, and then to compute its frequency spectrum. To optimize it by SQP, Automatic Differentiation is mainly used to compute the model gradients.
11:40am - 12:00pmID: 154
/ Oral Session 1-2: 2
Abstract submission for on-site presentation
Topics: ApplicationKeywords: magnetic gear, contactless power transmission, magneto-mechanical sizing
Sizing magnetic gears through optimization
Luca Dimauro1, Maurizio Repetto2, Luigi Solimene2, Mauro Velardocchia1
1DIMEAS, Politecnico di Torino, Italy; 2DENERG, Politecnico di Torino, Italy
Magnetic gears can be considered as possible power transmission systems, in substitution of classical mechanical transmissions. They are able to transmit torque, between two mechanical axes, in a contactless way, through the interaction of two coaxial permanent magnets rotors with a set of ferromagnetic poles. The performance of magnetic gears depends on several geometric and material parameters and their sizing can be approached by optimization. In this work a multi-objective optimization procedure is used to compute the minimum volume encumbrance to meet a value of the transmitted torque. The optimization is based on a constrained single objective approach and carried out by a deterministic optimization strategy. The analysis of the magnetic structure is performed by two dimensional magnetostatic nonlinear magnetic field analysis that is used to evaluate the maximum value of transmitted torque. Optimization loop is managed by a deterministic constrained technique working on the thickness values of the active and passive parts of the two rotor structures. Results obtained allow to size the device, finding the minimal radial and axial encumbrance of the gear needed to obtain a given value of transmitted torque.
12:00pm - 12:20pmID: 103
/ Oral Session 1-2: 3
Abstract submission for on-site presentation
Topics: Topology optimization, ApplicationKeywords: 3D printer, Finite element method, Induction heating coil, Shape optimization.
Shape Optimization for 3D Printed Induction Heating Coil
Takeru Fujita, Kengo Sugahara
Kindai University, Japan
We present a design method for a 3D printed induction heating coil that is optimized by parameterizing the coil path and cross-section. The objective functions of the optimization are the temperature rises in the heated workpiece in the angular and longitudinal directions. The coil path optimization ensures homogeneous heating in the angular direction, while the cross-section optimization enables local heating in the longitudinal direction. We combine the optimized parameters and verify that the final shape can be printed with 3D printers.
12:20pm - 12:40pmID: 122
/ Oral Session 1-2: 4
Abstract submission for on-site presentation
Topics: Topology optimization, Theoretical aspects and fundamentalsKeywords: Curved boundaries and interfaces, Magnetic field, Shape optimal design, Virtual elements.
Optimal Shape Syntesis with Curved Domains in Magnetics via the Virtual Element Method
Franco Dassi1, Paolo Di Barba2, Alessandro Russo1
1Università di Milano-Bicocca; 2Università di Pavia
We propose an innovative technique for dealing with optimal shape design problems characterised by curved boundaries between ferromagnetic and dielectric sub-regions. The proposed approach relies on the ability of the Virtual Element Method in handling meshes with polygonal elements having curved edges. The well-known TEAM 25 benchmark problem is considered as case study.
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