Fractional Slot Concentrated Windings

Design, Analysis, and Optimization

Inbunden, Engelska, 2027

1 939 kr

Kommande

A consolidation of all known FSCW types and their optimization methods Fractional Slot Concentrated Windings provides an in-depth analysis of fractional slot concentrated windings (FSCWs), reviewing theoretical foundations, existing FSCWs including three-phase and multiphase windings and their optimization methods, benefits, challenges, and solutions associated with FSCWs. Numerous winding topologies for real-world applications in traction motors, aerospace systems, robotics, industrial drives, and renewable energy systems are also included. This book delves into detailed examinations of distinct winding groups and explores optimization techniques with dedicated chapters on specialized coil configurations. For each FSCW group, the main winding topologies and their associated winding layouts are explained. Written by a highly qualified author in the field, this book includes information on: Analytical approaches for the calculations of MMF characteristics and their winding factorsA specific FSCW configuration with unequal zones and asymmetric zone distributions, expanding the spectrum of standard concentrated winding topologiesUnique winding structures, such as the two-tooth coil-pitch design, alongside a review of star-delta combination concepts for FSCWsThe flux-barrier technique, including the implementation of flux barriers in both the stator yoke and stator teeth regionsNovel winding solutions for radial-flux and axial-flux machinesCovering principles, performance, and optimization, Fractional Slot Concentrated Windings serves as a comprehensive guide for engineers, researchers, and practitioners working with FSCWs in the design and optimization of modern electrical machines.

Produktinformation

Utgivningsdatum2027-01-18
FormatInbunden
SpråkEngelska
Antal sidor288
FörlagJohn Wiley & Sons Inc
ISBN9781394423927

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Gurakuq Dajaku is the CEO of FEAAM GmbH, the Research Center for Electrical Drives and Actuators Munich, Germany. He received the diploma degree in electrical engineering from the University of Prishtina, Kosova, in 1997, and the Ph.D. degree from the Universitaet der Bundeswehr Muenchen, Munich, Germany, in 2006. Dr. Dajaku has authored/co-authored numerous technical papers published in various IEEE conferences and journals and has several German and international patents and patent pending applications.

Preface1 Introduction 171.1 Stator Winding Types 31.2 Winding Realization 41.2.1 Number of layers 41.2.2 Coil polarity 41.2.3 Phase-zone 41.2.4 Base Winding 61.3 Winding Topologies 61.4 Fundamental Winding Specifications 71.4.1 Slots per pole and phase 81.4.2 Winding periodicity 81.4.3 Winding feasibility 81.4.4 Number of slots 81.4.5 Coil-pitch 91.4.6 Turns per coil and phase 91.5 MMF Harmonic Definition 91.6 Manufacturing Methods 101.7 Application 112 Standard FSCWs 122.1 Single-coil MMF Formulation 132.1.1 Definition of MMF parameters 142.1.2 Coil MMF function 162.2 MMF Analysis of Standard FSCWs 172.2.1 Single-layers FSCWs 172.2.2 Double-layer FSCWs 242.3 Winding Factors 282.3.1 Maximum winding factors 292.3.2 Selection of working harmonic 302.3.3 Winding factors for different single-layer FSCWs 312.3.4 Winding factors for different double-layer FSCWs 322.4 Three-Phase MMF Distribution 332.5 MMF Characteristics of Various Three-phase Standard FSCWs 353 FSCWs with Unequal Zones 453.1 Winding Configurations 463.2 MMF Analysis 483.2.1 Single-layers FSCWs with unequal zones 483.2.2 Double-layer FSCWs with unequal zones 543.2.3 FSCWs with asymmetric zone distribution 593.3 Winding Factors 673.3.1 Maximum winding factors 713.3.2 MMF working harmonics 753.4 MMF Characteristics of Various Three-phase FSCWs with Unequal Zones 764 FSCWs with Specific Coil Configuration 844.1 FSCWs with Asymmetric Coils 854.1.1 Coil MMF function 854.1.2 FSCWs with z=1, nc>1, and assymetric coils 884.1.3 FSCWs with z=2, nc>1, and asymmetric coils 904.2 FSCWs with Unequal Turns per Coil 934.2.1 FSCWs with z=1, nc>1, and unequal turns per coil 934.2.2 FSCWs with z=2, nc>1, and unequal turns per coil 974.3 FSCWs with Unequal Coil-Pitch 984.3.1 MMF aproach 994.3.2 Coil-pitch effect 1004.5 Exemplary Windings with Special Coil Configurations 1025 Multiphase FSCWs 1055.1 Multiphase FSCW Topologies 1065.1.1 Conversion of a three-phase FSCW into a six-phase winding 1065.1.2 Other multiphase FSCW configurations 1075.2 Multi Three-phase FSCWs 1105.2.1 Asymmetric six-phase FSCW.. 1105.2.2 Asymmetric nine-phase FSCW.. 1135.2.3 Concluding remarks 1165.3 FSCWs with an Arbitrary Number of Phases 1175.3.1 MMF function analysis 1185.3.2 Operation modes 1215.3.3 Multiphase FSCWs with various slot/pole combination 1235.4 Representative Multiphase FSCWs 1255.4.1 Multiphase DL-FSCWs 1255.4.2 Multiphase SL-FSCWs 1275.4.3 Concluding remarks 1306 FSCWs with Flux-Barrier Stator 1316.1 Stator Flux-barrier Techniques 1336.1.1 Flux barrier effect 1336.1.2 Realization 1356.2 FSCWs with Stator-yoke Flux Barriers 1366.2.1 Equivalent MMF function 1396.2.2 SL-FSCWs with stator-yoke flux-barrier 1426.2.3 DL-FSCWs with stator-yoke flux-barrier 1476.2.4 Key features and potentials 1526.3 FSCWs with Stator-teeth Flux Barriers 1546.3.1 SL-FSCWs with stator-teeth flux-barriers 1576.3.2 SL-FSCWs with unequal zones and stator-teeth flux barriers 1626.4 Multiphase SL-FSCWs with Flux-barrier Stator 1646.4.1 Multiphase FSCWs with stator-yoke flux barriers 1646.4.2 Multiphase FSCWs with stator-teeth flux barriers 1697 Two-tooth FSWs 1767.1 Implementation and Operating Principles 1777.2 Single-layer Two-tooth/Three-phase FSWs 1817.2.1 Single-layer FSWs with one zone/phase 1817.2.2 Single-layer FSWs with two zones/phase 1837.3 Double-layer Two-tooth/Three-phase FSWs 1857.3.1 Double-layer FSWs with one zone/phase 1857.3.2 Double-layer FSWs with two zone/phase 1887.3.3 Double-layer FSWs with unequal-zones 1897.4 Multiphase Two-tooth FSWs 1917.4.1 Single-layer multiphase two-tooth FSWs 1927.4.2 Double-layer multiphase two-tooth FSWs 1967.4.3 Concluding remarks 2007.5 Two-tooth FSWs with Specific Coil Configurations 2007.5.1 Two-tooth FSWs with asymmetric coils 2017.5.2 Two-tooth FSWs with unequal coils per zone 2027.5.3 Two-tooth FSWs employing an unequal tooth-width stator core 2058 FSCWs with Star-Delta Connection 2088.1 Star-Delta windings 2098.1.1 Star-delta phase currents 2108.1.2 Winding MMF function 2118.2 Star-Delta FSCW topologies 2138.2.1 Symmetric star-delta FSCWs 2148.2.2 Asymmetric star-delta FSCWs 2178.3 Winding Analysis 2198.3.1 Balanced star-delta FSCWs 2208.3.2 Unbalanced star-delta FSCWs 2268.3.3 Star-delta FSCWs with sinusoidal MMF distribution 2318.3.4 Concluding remarks 2328.4 FSCWs with Sequential Star-Delta Coil Arrangements 2338.4.1 MMF winding function 2358.4.2 FSCW examples with sequential star-delta coil arrangements 2378.5 Star-Delta FSCWs with a Dual Slot-layers Stator 2418.6 Exemplary Star-Delta FSCW Machines 2439 FSCWs for Axial Flux Machines 2489.1 AFMs - Construction and Realization 2499.2 AFMs - Stator winding MMF Harmonics 2509.3 Stator-shifting Technique for AFMs with Concentrated Windings 2549.3.1 AFMs with double-layer FSCWs 2549.3.2 AFMs with single-layer FSCWs 2609.4 AFMs with Asymmetric Stator Shifting 2629.5 AFMs with Unequal Turns per Coil 2649.6 AFMs with Flux-Barrier Stator 2649.7 AFMs Topologies 265Bibliography 269