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2001. The study constitutes an overall approach to the design, manufacturing and testingof an electric machine. Naturally, such an approach involves the making of a seriesof choices and decisions, some mandated at the outset by the requirements andconstraints of the surrounding system, and some gradually introduced in due courseby the accompanying technical analyses. The former are mainly about the basicstructure of the machine and the latter are on the specifics of the design parametersand other auxiliary issues such as the power electronic drive
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DESIGN AND DEVELOPMENT OF A HIGH-SPEED AXIAL-FLUX PERMANENT-MAGNET MACHINE DESIGN AND DEVELOPMENT OF A HIGH-SPEED AXIAL-FLUX PERMANENT-MAGNET MACHINE PROEFSCHRIFT ter verkrijging van de graad van doctor aan de Technische Universiteit Eindhoven, op gezag van de Rector Magnificus, prof.dr. M. Rem, voor een commissie aangewezen door het College voor Promoties in het openbaar te verdedigen op woensdag 16 mei 2001 om 16.00 uur door Funda Sahin geboren te Van, Turkije Dit proefschrift is goedgekeurd door de promotoren: prof.dr.ir. A.J.A. Vandenput en prof.dr.ir. J.C. Compter CIP-DATA LIBRARY TECHNISCHE UNIVERSITEIT EINDHOVEN Sahin, Funda Design and development of a high-speed axial-flux permanent machine / by Funda Sahin. - Eindhoven : Technische Universiteit Eindhoven, 2001. Proefschrift. - ISBN 90-386-1380-1 NUGI 832 Trefw: elektrische machines ; permanente magneten / electrische machines ; verliezen / hybride voertuigen / elektrische machines ; warmte. Subject headings: permanent magnet machines / losses / electric vehicles / thermal analysis. Contents 1 Introduction 1.1 Rationale and approach . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 Organization of the thesis . . . . . . . . . . . . . . . . . . . . . . . . 2 Hybrid electric vehicle application 2.1 Introduction . . . . . . . . . . . . 2.2 Energy storage devices . . . . . . 2.2.1 Batteries . . . . . . . . . . 2.2.2 Hydrogen . . . . . . . . . 2.2.3 Flywheels . . . . . . . . . 2.3 Hybrid electric vehicles . . . . . . 2.4 The particular HEV application . 2.5 Required electrical machine . . . 2.6 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Axial-flux permanent-magnet machines 3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2 Applications and types of AFPM machines . . . . . . . . . . . . . . . 3.2.1 Existing applications . . . . . . . . . . . . . . . . . . . . . . . 3.2.2 Some common features of AFPM machines . . . . . . . . . . . 3.2.3 AFPM machine types . . . . . . . . . . . . . . . . . . . . . . 3.2.4 Design variations . . . . . . . . . . . . . . . . . . . . . . . . . 3.3 Derivation of the sizing equations . . . . . . . . . . . . . . . . . . . . 3.3.1 Dimensional design parameters . . . . . . . . . . . . . . . . . 3.3.2 Torque . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3.3 EMF and power . . . . . . . . . . . . . . . . . . . . . . . . . . 3.4 Basic magnetic design . . . . . . . . . . . . . . . . . . . . . . . . . . 3.4.1 Rotor with surface-mounted permanent magnets . . . . . . . . 3.4.2 Rotor with interior permanent magnets . . . . . . . . . . . . . 3.4.3 Stator yoke . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5