Book description
Classical synchronous motors are the most effective device to drive industrial production systems and robots with precision and rapidity. However, numerous applications require efficient controls in nonconventional situations.
Firstly, this is the case with synchronous motors supplied by thyristor linecommutated inverters, or with synchronous motors with faults on one or several phases.
Secondly, many drive systems use nonconventional motors such as polyphase (more than three phases) synchronous motors, synchronous motors with double excitation, permanent magnet linear synchronous motors, synchronous and switched reluctance motors, stepping motors and piezoelectric motors.
This book presents efficient controls to improve the use of these nonconventional motors.
Contents
1. Selfcontrolled Synchronous Motor: Principles of Function and Simplified Control Model, Francis Labrique and François Baudart.
2. Selfcontrolled Synchronous Motor: Dynamic Model Including the Behavior of Damper Windings and Commutation Overlap, Ernest Matagne.
3. Synchronous Machines in Degraded Mode, Damien Flieller, Ngac Ky Nguyen, Hervé Schwab and Guy Sturtzer.
4. Control of the Doublestar Synchronous Machine Supplied by PWM Inverters, Mohamed Fouad Benkhoris.
5. Vectorial Modeling and Control of Multiphase Machines with Nonsalient Poles Supplied by an Inverter, Xavier Kestelyn and Éric Semail.
6. Hybrid Excitation Synchronous Machines, Nicolas Patin and Lionel Vido.
7. Advanced Control of the Linear Synchronous Motor, Ghislain Remy and PierreJean Barre.
8. Variable Reluctance Machines: Modeling and Control, Mickael Hilairet, Thierry Lubin and Abdelmounaïm Tounzi.
9. Control of the Stepping Motor, Bruno Robert and Moez Feki .
10. Control of Piezoelectric Actuators, Frédéric Giraud and Betty LemaireSemail.
Table of contents
 Cover
 Title Page
 Copyright
 Introduction

Chapter 1: Selfcontrolled Synchronous Motor: Principles of Function and Simplified Control Model
 1.1. Introduction
 1.2. Design aspects specific to the selfcontrolled synchronous machine
 1.3. Simplified model for the study of steady state operation
 1.4. Study of steadystate operation
 1.5. Operation at nominal speed, voltage and current
 1.6. Operation with a torque smaller than the nominal torque
 1.7. Operation with a speed below the nominal speed
 1.8. Running as a generator
 1.9. Equivalence of a machine with a commutator and brushes
 1.10. Equations inferred from the theory of circuits with sliding contacts
 1.11. Evaluation of alternating currents circulating in steady state in the damper windings
 1.12. Transposition of the study to the case of a negative rotational speed
 1.13. Variant of the base assembly
 1.14. Conclusion
 1.15. List of the main symbols used
 1.16. Bibliography

Chapter 2: Selfcontrolled Synchronous Motor: Dynamic Model Including the Behavior of Damper Windings and Commutation Overlap
 2.1. Introduction
 2.2. Choice of the expression of Nk
 2.3. Expression of fluxes
 2.4. General properties of coefficients <X>, <Y> and <Z>
 2.5. Electrical dynamic equations
 2.6. Expression of electromechanical variables
 2.7. Expression of torque
 2.8. Writing of equations in terms of coenergy
 2.9. Application to control
 2.10. Conclusion
 2.11. Appendix 1: value of coefficients <X>, <Y> and <Z>
 2.12. Appendix 2: derivatives of coefficients <X>, <Y> and <Z>
 2.13. Appendix 3: simplifications for small μ
 2.14. Appendix 4 – List of the main symbols used in Chapters 1 and 2
 2.15. Bibliography

Chapter 3: Synchronous Machines in Degraded Mode
 3.1. General introduction
 3.2. Analysis of the main causes of failure
 3.3. Reliability of a permanent magnet synchronous motors drive
 3.4. Conclusion
 3.5. Optimal supplies of permanent magnet synchronous machines in the presence of faults

3.6. Supplies of faulty synchronous machines with nonsinusoidal back electromagnetic force
 3.6.1. Generalization of the modeling
 3.6.2. A heuristic approach to the solution
 3.6.3. First optimization of ohmic losses without constraint on the homopolar current
 3.6.4. Second optimization of ohmic losses with the sum of currents of nonfaulty phases being zero
 3.6.5. Third optimization of ohmic losses with a homopolar current of zero (in all phases)

3.6.6. Global formulations
 3.6.6.1. Case 1: a fault current with independent phases
 3.6.6.2. Case 2: a fault current that is independent of other phase currents, with a homopolar current of 0 on n − 1 phases
 3.6.6.3. Case 3: a fault current independent of the other phase currents, with homopolar current of 0 on n phases
 3.6.6.4. Application to a fivephase machine and independent phases with two phases in open circuit
 3.6.6.5. Application to a nonsinusoidal fivephase machine with a phase in open circuit
 3.6.6.6. Application to a sinusoidal fivephase machine in the presence of saturation
 3.6.6.7. Application to a fivephase machine with sinusoidal back emfs and phase a in short circuit
 3.7. Experimental learning strategy in closed loop to obtain optimal currents in all cases
 3.8. Simulation results
 3.9. General conclusion
 3.10. Glossary
 3.11. Bibliography

Chapter 4: Control of the Doublestar Synchronous Machine Supplied by PWM Inverters
 4.1. Introduction
 4.2. Description of the electrical actuator
 4.3. Basic equations
 4.4. Dynamic models of the doublestar synchronous machine
 4.5. Control of the doublestar synchronous machine
 4.6. Bibliography

Chapter 5: Vectorial Modeling and Control of Multiphase Machines with Nonsalient Poles Supplied by an Inverter
 5.1. Introduction and presentation of the electrical machines

5.2. Control model of inverterfed permanent magnet synchronous machines
 5.2.1. Characteristic spaces and generalization of the notion of an equivalent twophase machine
 5.2.2. The inverter seen from the machine

5.3. Torque control of multiphase machines
 5.3.1. Control of currents in the natural basis
 5.3.2. Control of currents in a decoupling basis
 5.4. Modeling and torque control of multiphase machines in degraded supply mode
 5.5. Bibliography
 Chapter 6: Hybrid Excitation Synchronous Machines

Chapter 7: Advanced Control of the Linear Synchronous Motor

7.1. Introduction
 7.1.1. Historical review and applications in the field of linear motors
 7.1.2. Presentation of linear synchronous motors
 7.1.3. Technology of linear synchronous motors
 7.1.4. Linear motor models using sinusoidal magnetomotive force assumption
 7.1.5. Causal ordering graph representation
 7.1.6. Advanced modeling of linear synchronous motors
 7.2. Classical control of linear motors
 7.3. Advanced control of linear motors
 7.4. Conclusion
 7.5. Nomenclature
 7.6. Acknowledgment
 7.7. Bibliography
 7.8. Appendix: LMD10050 Datasheet of ETEL

7.1. Introduction
 Chapter 8: Variable Reluctance Machines: Modeling and Control

Chapter 9: Control of the Stepping Motor
 9.1. Introduction
 9.2. Modeling
 9.3. Control in open loop
 9.4. Controls in closed loop
 9.5. Advanced control: the control of chaos
 9.6. Bibliography

Chapter 10: Control of Piezoelectric Actuators
 10.1. Introduction
 10.2. Causal model in the supplied voltage referential
 10.3. Causal model in the referential of the traveling wave
 10.4. Control based on a behavioral model
 10.5. Controls based on a knowledge model
 10.6. Conclusion
 10.7. Bibliography
 List of Authors
 Index
Product information
 Title: Control of Nonconventional Synchronous Motors
 Author(s):
 Release date: January 2012
 Publisher(s): WileyISTE
 ISBN: 9781848213319
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