Synchronous Reluctance Machines: Analysis, optimization and applications (Energy Engineering)

Contents
About the authors
List of acronyms
List of symbols
1. Introduction
	1.1 A brief history
	1.2 Drawbacks in using rare-earth PMs
	1.3 Increasing interest in Synchronous Reluctance machines
2. Magnetic materials
	2.1 Ferromagnetic materials
	2.2 Permanent magnets
	2.3 Bonded magnets
	2.4 BMs preparation
	2.5 BMs magnetization and characterization
	2.6 Losses in magnetic materials
3. Synchronous reluctance motor geometry drawing
	3.1 Fluid flux-barrier rotor geometry
	3.2 Segmented flux-barrier rotor
	3.3 Flux-barriers and iron channels design
4. Reluctance network model of high-speed synchronous reluctance machines
	4.1 Improved reluctance network
	4.2 Finite element analysis results
	4.3 Results comparison
	4.4 Discussion
5. Nonlinear analytical model for synchronous reluctance machines
	5.1 Development of the analytical model
	5.2 Analytical model
	5.3 Rotor magnetic potentials computation
	5.4 Radial iron ribs computation
	5.5 Computation of the sleeve thickness
	5.6 Analytical model of the SYR motor
	5.7 Analytical model with saturation
	5.8 Torque maps
	5.9 Discussion
6. Design criteria of flux-barriers in synchronous reluctance machines
	6.1 The simplified analytical model
	6.2 One flux-barrier rotor
	6.3 Two flux-barrier rotor
	6.4 Three flux-barriers rotor
	6.5 Design of asymmetric flux-barriers in SyRM
	6.6 Rotor with two flux-barriers per pole
	6.7 Experimental measurements
	6.8 Discussion
7. Structural analysis with GetDP
	7.1 Brief presentation of GetDP
	7.2 Mathematical formulation for structural analysis
	7.3 Cantilever beam with single load at the end
	7.4 Cantilever beam with distributed load
	7.5 Rotating hollow disk
	7.6 Rotating SyR rotor geometry
8. Efficiency map computation
	8.1 Introduction
	8.2 Input data
	8.3 Constant torque loci current points
	8.4 Constant torque number of points homogenization
	8.5 Creation of the 3D matrices
	8.6 Computation of the derived quantities
	8.7 Maximum efficiency computation
	8.8 Efficiency map, including thermal limit
9. Multi-objective optimization
	9.1 Problem statement
	9.2 Missing pieces
10. Design and optimization of a PMaSyR motor for low-voltage E-scooter applications
	10.1 Design requirements and data
	10.2 Stator and rotor geometries
	10.3 Design aspects regarding the number of turns
	10.4 Individual evaluation procedure
	10.5 Optimization results
	10.6 Experimental results
	10.7 Discussion
11. Synchronous reluctance motor optimization for pumping application
	11.1 Rotor optimization
	11.2 Chosen motor for prototype
	11.3 Experimental measurements
	11.4 Discussion
12. High-torque low-speed permanent magnet assisted synchronous reluctance motor design
	12.1 Specifications, requirements and hypothesis
	12.2 Parametric analyses
	12.3 Optimization
	12.4 Discussion
13. Bonded magnets in PMaSyR machines
	13.1 Motor geometry
	13.2 Prototype assembling
	13.3 Experimental results
	13.4 Conclusion
14. High-speed synchronous reluctance machines
	14.1 Overview on a high-speed SyR machine
	14.2 Design methodology for high-speed synchronous reluctance machines
	14.3 First application example
	14.4 Second application example
	14.5 Comparison of high-speed synchronous reluctance and PM machines
15. Overview of fault-tolerant SyR machines
16. Impact of winding arrangement in dual three-phase synchronous reluctance machine
	16.1 Overview
	16.2 Dual three-phase winding arrangements
	16.3 Torque behaviors
	16.4 Radial force
	16.5 Magnetic coupling between winding 1 and 2
	16.6 Discussion
17. Optimization of a synchronous reluctance machine for fault-tolerant applications
	17.1 Introduction
	17.2 Rotor optimization strategies
	17.3 WindingW-12-12 alternative configurations
	17.4 Mutual magnetic coupling
	17.5 Magnetic model of the machine
	17.6 Conclusion
18. Experimental validation of a synchronous reluctance machine for fault-tolerant applications
	18.1 Introduction
	18.2 Dual three-phase winding arrangement
	18.3 Motor geometry
	18.4 Optimization results
	18.5 Prototype
	18.6 Torque behaviors
	18.7 Magnetic coupling
	18.8 Three-phase short circuit test
	18.9 Discussion
19. Self-sensing-oriented optimization of synchronous reluctance machine design
	19.1 Example of typical optimization
	19.2 Self-sensing-oriented optimization
	19.3 Discussion
20. Conclusions
References
Appendix A: Iron losses insights
	A.1 Eddy currents iron losses coefficient
	A.2 Element-by-element iron losses
Appendix B: MMF distribution along the stator periphery
	B.1 Spatial harmonic
	B.2 Rotating MMF
Appendix C: HS-SyR analytical model constants
Appendix D: GetDP elasticity formulation
Appendix E: Maxwell stress tensor derivation
Appendix F: High-frequency signal injection mathematical model
	F.1 Induction motor
Appendix G: Incremental permeability simulations for differential inductances computation
	G.1 Differential inductance computation
	G.2 Plain magnetostatic only simulations
	G.3 Incremental permeability simulations
	G.4 Results comparison
	G.5 Meaning of incremental permeability
Index