Ahamed Bilal Asaf Ali (Autor) Design Rules for Permanent Magnet Synchronous Machine with Tooth Coil Winding Arrangement

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1 Ahamed Bilal Asaf Ali (Autor) Design Rules for Permanent Magnet Synchronous Machine with Tooth Coil Winding Arrangement Copyright: Cuvillier Verlag, Inhaberin Annette Jentzsch-Cuvillier, Nonnenstieg 8, Göttingen, Germany Telefon: +49 (0) , Website:

2 vii Abstract iii Kurzfassung v 1. Introduction and Literature Design Process of Drive System Objective Structure of the Work Pulsating Torque Minimization Rules- Literature Discussion Minimization Method - Design Parameters Minimization Method - Active Control High Torque PMSM Application Paper-Mill Drive System of Paper-mill Drive with Gears Direct Drive Comparison with and without Gears Economical and Ecological Aspects Application of PMSM in Paper-Mill Generic Design and Working Principle of PMSM Physical Description of PMSM Selection of Ferromagnetic Materials Considered Geometry of PMSM Stator/Rotor

3 viii 3. General Derivation of Force in PMSM Classification of Parasitic Torque Components of Air Gap Flux Density and Permeances No-load Flux Density Solution of the PDE (Method of Separation of Variables) Magnet Leakage/Magnet Utilization Armature Current Sheet Permeance due to Slotting Permeance due to Saturation Permeance due to Magnets No-load Flux Density with Slot Torque Derivation Mathematical Formulation of Cogging Torque Cogging Torque Result Comparison Mathematical Formulation of Torque Ripple Torque Ripple Result Comparison Torque with Saturation Permeance Torque pulsation of Geometries Cogging Torque Torque Ripple Relative Torque Pulsation Comparison THD from Surface Mounted to Pole-Cap Torque Analysis Pulsating Torque for Considered Geometries Cogging Torque from D Cogging Torque from D Cogging Torque from D Cogging Torque from D Torque Ripple from D

4 ix Torque Ripple from D Torque Ripple from D Torque Ripple from D D Harmonics Analysis of Numerical Calculations Step Step Step Step Torque Analysis for D Torque Analysis for D Torque Analysis for D Intermediate Summary Torque Analysis for D Torque Analysis for D Torque Analysis for D Summary Measurement Results and Parasitic Torque Special Study Measurement Set-up Pulsating Torque Special Study Introduction to Optimization Methods Optimization Methods and Model Parameters Optimized Geometry Torque Analysis Optimized Geometry Torque Ripple under Field Weakening Torque Ripple under Alternative Field Weakening

5 x 5.5. Torque Ripple under Half Load Nominal Operating Point Torque Analysis at Half Load D Torque Analysis at Half Load D Torque Analysis at Half Load D Torque Analysis at Half Load D Summary Generic Design Rules for Tooth Coil Winding Arrangement Design Guidelines Design Rules based on Geometrical Parameters No-load Case Load Case Simplified Design Rules Design Rules from Manufacturing View Point Conclusion and Outlook 151 A. Schwartz-Christoffel Transformation 153 B. Field equation of current sheet 155 C. Modal analysis of rotors D2 and D3 157 D. FEM mesh and post processing figures 159 Symbols und Acronyms 169