Surface-mounted permanent magnet (SPM) machine is widely applied in industry application because of its high torque density, high efficiency and simple rotor structure. This study presents a parametric design plane, which makes the desired machine performance visualized during the machine design process. Based on that, a new parametric design method is introduced to simplify the design procedure of SPM motors. Besides the standard radial PM shape, the presented method applies to magnets of modified shape called "rounded", intended for torque ripple minimization at no additional manufacturing cost and such as stator skewing, rotor stepping or the like. The design flowchart for the method is illustrated and the output designs are validated by finite element analysis (FEA) and experimental tests. The proposed design method is embedded in a machine design instrument available online.
Parametric Design Method for SPM Machines Including Rounded PM Shape / Lu, C; Ferrari, S; Pellegrino, G; Bianchini, C; Davoli, M. - (2017), pp. 4309-4315. (Intervento presentato al convegno 2017 IEEE Energy Conversion Congress and Exposition (ECCE) tenutosi a Cincinnati, OH, USA nel 1-5 Oct. 2017) [10.1109/ECCE.2017.8096743].
Parametric Design Method for SPM Machines Including Rounded PM Shape
Bianchini, C;Davoli, M
2017
Abstract
Surface-mounted permanent magnet (SPM) machine is widely applied in industry application because of its high torque density, high efficiency and simple rotor structure. This study presents a parametric design plane, which makes the desired machine performance visualized during the machine design process. Based on that, a new parametric design method is introduced to simplify the design procedure of SPM motors. Besides the standard radial PM shape, the presented method applies to magnets of modified shape called "rounded", intended for torque ripple minimization at no additional manufacturing cost and such as stator skewing, rotor stepping or the like. The design flowchart for the method is illustrated and the output designs are validated by finite element analysis (FEA) and experimental tests. The proposed design method is embedded in a machine design instrument available online.
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