International Journal of Applied Electromagnetics and Mechanics - Volume 53, issue S2

Authors: Staudt, Tiago | Gerbaud, Laurent | Wurtz, Frédéric | Batistela, Nelson Jhoe | Kuo-Peng, Patrick

Article Type: Research Article

Abstract: The paper proposes an optimization approach to address the modeling and sizing complexities of Brushless Doubly-Fed Reluctances Machines. A semi-analytical model and a reluctance network model are coupled to a deterministic optimization algorithm where several inputs and outputs parameters can be constrained to solve sizing equations iteratively by maximizing or minimizing an objective function. A Pareto Front strategy is used to illustrate the models capabilities, highlighting the trade-offs on the design of this kind of electrical machines. The optimization model provides fast results to define a first design, reducing the number of unknown parameters of early development stages. This saves …computation time and computer resources in the design process compared to Finite Element Analysis. Show more

Keywords: Design optimization, brushless machines, electromagnetic analysis, wind energy

DOI: 10.3233/JAE-140167

Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 53, no. S2, pp. S261-S277, 2017

Authors: Kim, Young Hyun | Lee, Jung Ho

Article Type: Research Article

Abstract: This paper covers the characteristic analysis and optimum design of an axially laminated anisotropic (ALA) type Synchronous Reluctance Motor (SynRM) using a coupled Finite Element Method (FEM) and Response Surface Methodology (RSM). The rotor core of an ALA type adheres to the shaft axis, which has higher torque characteristics and a higher power factor due to the large difference of the (Ld -Lq ) and (Ld /Lq ) ratio. However, this assembly structure is affected by the centrifugal force around the shaft axis. This paper covers the study of an ALA-type rotor to solve this problem. Therefore, by simulating the …structure and the electromagnetic field, it is confirmed that the width of rotor core and insulator is set to design variables to reduce the minimum loss and the centrifugal force. Finally, comparisons are given with the characteristics of a same rated wattage traction induction motor and those of an ALA-SynRM, respectively. Show more

Keywords: ALA-SynRM, torque density, power factor, centrifugal force, traction motor

DOI: 10.3233/JAE-140170

Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 53, no. S2, pp. S279-S288, 2017

Authors: Hadbi, Djamel | Retière, Nicolas | Wurtz, Frederic | Roboam, Xavier | Sareni, Bruno

Article Type: Research Article

Abstract: The aircraft electric network is a complex system, consisting of many different elements integrated to form a unique entity, designed to perform a well-defined mission. In the current state, the network conceptual design is based on standards defined by the aircraft manufacturer. As a consequence, electric subsystem suppliers are doing local optimizations to fulfill these standards in a separated way through a ``mechanistic approach''. This results in a set of optimized subsystems which is not necessarily ``optimal'' with respect to the network level. To overcome this problem, we present a design approach called EPFM (Extended Pareto Front Method) based on …separated subsystem optimizations which aims at finding an optimal configuration of the electrical network at the system level. The EPFM is discussed with regard to the computational cost and the collaboration requirements in the aeronautical industrial context and compared with the classical mechanistic approach. Show more

Keywords: System design, integrated optimal design, multilevel optimization, embedded electrical system

DOI: 10.3233/JAE-140174

Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 53, no. S2, pp. S289-S305, 2017