Modeling Approaches of Electromagnetic Devices for R&D Engineers

Dear Colleagues,

Electromagnetic devices (e.g., electric machines, electrolyzers, fuel cells, etc.) are used in various fields of electrical engineering, including transportation (e.g., electric/hybrid/ fuel cell vehicles, railway traction, and aerospace), energy harvesting (e.g., flywheel, etc.), renewable energy (e.g., wind power turbine, hydroelectric power plant, etc.), and magnetic refrigeration devices, among others. Traditionally, numerical methods (i.e., the finite-element, finite-difference or boundary-element analysis) have been extensively employed in R&D departments due to their accuracy compared to experimental measurements. However, particularly in 3D design, these approaches are time-consuming and unsuitable for application to optimization problems. Nowadays, engineers aim to create comprehensive computer-aided design for electromagnetic devices, using accurate and fast simulation models to reduce the computation time. Hence, the main objective of this Special Issue is to present the latest advancements in mathematical modeling and the design of electromagnetic devices for diverse applications. The key modeling approaches to be discussed include:

• Equivalent circuits (i.e., electrical, thermic, magnetic…);
• Schwarz–Christoffel mapping method;
• Maxwell–Fourier (i.e., multi-layers models, eigenvalues models, subdomain technique).

Topics of interest in mathematical models include, but are not limited to:

• 2D, quasi 3D and 3D;
• Global/local saturation, slotting and/or eddy-current effects;
• Adaptive generic models;
• Multi-physic modeling with new materials;
• Hybrid models.

Numerical methods and experimental tests should be employed for comparisons and validations.

Dr. Frédéric Dubas
Dr. Baocheng Guo
Guest Editors

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• equivalent circuits (i.e., electrical, thermic, magnetic…)
• electrical machines
• PM machines