Advanced Theory of Fractional-Slot Concentrated-Wound Permanent Magnet Synchronous Machines

Description

This book focuses on the analytical modeling of fractional-slot concentrated-wound (FSCW) interior permanent magnet (IPM) machines and establishes a basis for their magnetic and electrical analysis. Aiming at the precise modeling of FSCW IPM machines’ magnetic and electrical characteristics, it presents a comprehensive mathematical treatment of the stator magneto-motive force (MMF), the IPM rotor non-homogeneous magnetic saturation, and its airgap flux density. The FSCW stator spatial MMF harmonics are analytically formulated, providing a basis on which a novel heuristic algorithm is then proposed for the design of optimal winding layouts for multiphase FSCW stators with different slot/pole combinations. In turn, the proposed mathematical models for the FSCW stator and the IPM rotor are combined to derive detailed mathematical expressions of its operational inductances, electromagnetic torque, torque ripple and their respective subcomponents, as a function of the machine geometry and design parameters. Lastly, the proposed theories and analytical models are validated using finite element analysis and experimental tests on a prototype FSCW IPM machine. Front Matter ....Pages i-xxi Introduction and Literature Review (Mohammad Farshadnia)....Pages 1-22 Analytical Modelling of Stator Magnetic Characteristics in Fractional-Slot Concentrated-Wound Permanent Magnet Machines (Mohammad Farshadnia)....Pages 23-59 Design of Optimal Winding Layouts for Multiphase Fractional-Slot Concentrated-Wound Permanent Magnet Machines (Mohammad Farshadnia)....Pages 61-94 Analytical Modelling of Rotor Magnetic Characteristics in an Interior Permanent Magnet Rotor (Mohammad Farshadnia)....Pages 95-126 Calculation of Airgap Function and Inductance in Fractional-Slot Concentrated-Wound Interior Permanent Magnet Machines (Mohammad Farshadnia)....Pages 127-154 Detailed Analytical Modelling of Inductances and Electromagnetic Torque in Fractional-Slot Concentrated-Wound Interior Permanent Magnet Machines Under Healthy and Open-Phase Fault Conditions (Mohammad Farshadnia)....Pages 155-193 An Extended dq Model for Fractional-Slot Concentrated-Wound Interior Permanent Magnet Machines Considering Non-ideal Machine Parameters (Mohammad Farshadnia)....Pages 195-218 Conclusions and Future Works (Mohammad Farshadnia)....Pages 219-222 Back Matter ....Pages 223-251