SENSORLESS FIELD ORIENTED CONTROL OF BRUSHLESS ...
SENSORLESS FIELD ORIENTED CONTROL OF BRUSHLESS ...
SENSORLESS FIELD ORIENTED CONTROL OF BRUSHLESS ...
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Table of Contents<br />
List of Figures................................................................................................................................vii<br />
List of Tables ................................................................................................................................ xiv<br />
List of Symbols.............................................................................................................................. xv<br />
Abbreviations...............................................................................................................................xvii<br />
Nomenclature..............................................................................................................................xviii<br />
Acknowledgements........................................................................................................................ xx<br />
CHAPTER 1 - Introduction ............................................................................................................. 1<br />
Organization ................................................................................................................................6<br />
CHAPTER 2 - Fundamentals of Electric Motors ............................................................................ 9<br />
Preliminaries..............................................................................................................................11<br />
Motor Structures....................................................................................................................11<br />
Taxonomy of Motors.............................................................................................................13<br />
Magnetic Saliency .................................................................................................................17<br />
Armature and Field................................................................................................................21<br />
Elementary Physics and Modeling ............................................................................................22<br />
Faraday’s Law.......................................................................................................................22<br />
Lorentz Force Law ................................................................................................................25<br />
Per-Phase Electrical Model for Generalized Brushless PM Motor .......................................27<br />
Per-Phase Back-EMF Generation & Torque Production...........................................................36<br />
Torque Production.................................................................................................................38<br />
Back-EMF Generation ..........................................................................................................40<br />
Equivalence of Per-Phase Back-EMF and Torque Functions ...............................................41<br />
Back-EMF and Torque in Terms of Rotor-Stator Flux Linkage...........................................42<br />
General Electromechanical Models...........................................................................................47<br />
Trapezoidal and Sinusoidal BPMS Motors ...............................................................................51<br />
Torque Production.................................................................................................................51<br />
Torque & Back-EMF Constants............................................................................................56<br />
Electronic Commutation .......................................................................................................57<br />
Types of Brushless Permanent Magnet Motors.....................................................................59<br />
CHAPTER 3 - Sinusoidal BPMS Motors...................................................................................... 62<br />
Part I – Sinusoidal BPMS Motors with Sinusoidal Currents.....................................................63<br />
Physical Construction and Windings ....................................................................................63<br />
The Rotating Field.................................................................................................................65<br />
Graphical Illustration ........................................................................................................65<br />
Mathematical Derivation ..................................................................................................72<br />
Electrical and Mechanical Measures ................................................................................75<br />
Torque Production.................................................................................................................77<br />
Phasor Diagram and Single-Phase Equivalent (SPE) Circuit................................................82<br />
iii