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عدد المساهمات : 18992
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تاريخ التسجيل : 01/07/2009
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العمل : مدير منتدى هندسة الإنتاج والتصميم الميكانيكى
 |  موضوع: رسالة دكتوراه بعنوان Switched Reluctance Motor - Design, Simulation and Control الجمعة 25 مارس 2022, 1:54 am | |
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رسالة دكتوراه بعنوان
Switched Reluctance Motor - Design, Simulation and Control
University of Western Sydney
School of Engineering
DRG “Power Conversion and
Intelligent Motion Control”
By
Wadah Abass Aljaism
Submitted for the degree of Doctor of
Philosophy (Ph.D.)
و المحتوى كما يلي :
ABSTRACT
This thesis presents a design method for a switched reluctance (SR) motor to optimise
torque production for two types of 3 phase 6/4 poles SRM and 8/6 poles SRM designs.
SR motors require precise control to optimise the operating efficiency; two controllers are
proposed and built to operate the switched reluctance motor. The primary objectives of
this thesis are:
• To investigate the developed torque optimization for switched reluctance (SR) motors
as a function of various dimensions e.g. pole arc/pole pitch variation, stator shape
variation and rotor shape variation. This investigation is achieved through the
simulation using Finite Element Method (FEM), MATLAB/SIMULINK.
• The two proposed controllers are designed and built to carry out the experimental
testing of SRM. The most versatile SRM converter topology is the classic bridge
converter topology with two power switches and two diodes per phase. The first
controller consists of a Programmable Logic Controller (PLC) and the classic bridge
converter, this Programmable Logic Controller uses a simple language (ladder
language) for programming the application code, reliable, and contains timers. The
second controller consists of a cam positioner, encoder and the classic bridge
converter, this cam positoner is easy to be programmed, high-speed operation, and
this cam positioner has 8 outputs.
This thesis is organized as follows:
Chapter 1 describes the background, the present and future trends for the SRM. This
chapter shows the design, control, finite element analysis, fuzzy logic control the for a
switched reluctance (SR) motor (literature review).5
Chapter 2 describes the theory and principle of finite element method, as applied to
SR motors.
Chapter 3 describes the simulation results for serious of switched reluctance motor
designs by changing () rotor pole arc / pole pitch ratio, and () stator pole arc / pole
pitch ratio, for 3 Phase, 6/4 Poles SRM and 4 Phase, 8/6 Poles SRM. The results are
obtained through finite element method (FEM) and MATLAB-SIMULINK.
Chapter 4 describes the theory of fuzzy logic controller (FLC). This chapter shows
the simulation results for the FLC.
Chapter 5 describes the proposed programmable logic controller (PLC), and
associated hardware and software. The proposed programmable logic controller
produces lower speed. The cam positioner controller produces higher speed; the
experimental results for both controllers are presented and discussed.
Chapter 6 describes the summary of results from earlier chapters to draw the final
conclusion for the thesis. The recommendations for further research are also
discussed.
Appendix A describes the program code for the PLC controller.
Appendix B contains a CD of photos album, video clips for the PLC controller and
cam positioner controller.
Appendix C shows the list of the published papers by the author, extracted from this
thesis.6
STATEMENT OF SOURCES
I declare that the work submitted in this thesis is the result of my investigation and is not
submitted in candidature for any other degree. The earlier research work is appropriately
acknowledged and cited in the text.
Wadah Abass Aljaism
(Candidate)7
GLOSSARY of TERMS and SYMBOLS
ACC Accumulates value for the timer.
addmf Add membership function to FIS.
addrule Add rule to FIS.
addvar Add variable to FIS.
ALARM Showing the alarms in any process.
b terminal number.
B3 Internal relay numbered by 3 used in the processor memory.
Bit The smallest part in the software program.
Bm Viscous friction coefficient of the rotor.
B The flux density (T).
C5 Counter numbered by 5 used in the processor memory.
CDM Custom Data Monitors.
XIC Examine if closed instruction.
XIO Examine if Open instruction.
D Electric flux density (C/m^2).
dA Differential vector element of surface area A.
DCS Distributed control system.
DDE Dynamic Data Exchange.
DH+ Data high for networking.
dl Differential vector element of path length tangential to contour C
enclosing surface S.
DN Done instruction bit (bit 13 in the timer control word).
dV Differential element of volume V enclosed by surface S.
defuzz Defuzzify membership function.
evalfis Perform fuzzy inference calculation.
evalmf Generic membership function evaluation.8
gensurf Generate FIS output surface.
getfis Get fuzzy system properties.
e Slot number.
EN Enable bit (bit 15 in the timer control word).
F8 Float numbered by 8 used in the processor memory.
FEM Finite element method.
FIS Fuzzy Inference System.
FLC Fuzzy logic controller.
F The magneto motive force (mmf).
GRT Greater Than instruction.
I Current (A).
I/O Input/Output.
I1 Input image table numbered by 1.
i
ph
Phase current (A).
J Rotor's moment of inertia (kg m2).
LAD Ladder file is attribute of program files.
θ )i,(L The instantaneous inductance.
LES Less Than instruction.
LIM Limit Test instruction.
Lph Phase inductance (H).
L Inductance (H).
l The length of magnetic path (cm).
MMF Field force (Amp-Turn).
MIMICS Graphics program to produce artwork to monitor the process.
MOV Move instruction.
mf2mf Translate parameters between functions.
mfstrtch Stretch membership function.
newfis Create new FIS.
N7 Integer numbered by 7 used in the processor memory.9
Nr Rotor pole number.
Ns Stator pole number.
Nwn The number of turns in the coil side n.
NSTFPI Artificial neural network tuning.
O:e.s/b, I:e.s/b Address for output, address for input.
O0 output image table numbered by 0.
OTE Output Energise instruction.
OTL Output Latch instruction.
OTU Output Unlatch instruction.
PLC Programmable Logic Controller.
plotfis Display FIS input-output diagram.
plotmf Display all membership functions for one variable.
PRE Preset value for the timer.
readfis Load FIS from disk.
rmmf Remove membership function from FIS.
rmvar Remove variable from FIS.
R6 control numbered by 6 used in the processor memory.
r
ph
Phase resistance (ohm).
RSLogix 5 Rockwell Software Logic 5 suits Allen Bradley PLC 5.
RSLogix 500 Rockwell Software Logic 500 suits Allen Bradley PLC 500.
RUNG one step in the ladder file.
ℜ The reluctance (Amp-Turns per Weber).
s Word number.
s The edge of the open surface A.
S2 Status file numbered by 2 used in the processor memory.
SCADA Supervisory control and data acquisition.
SCL Scale Data instruction.
setfis Set fuzzy system properties.
showfis Display annotated FIS.10
showrule Display FIS rules.
writefis Save FIS to disk.
SRM Switched reluctance motor.
Swn The cross section area of the coil side n.
S b The uniform cross section area in the bar.
S The cross section area of the magnetic path.
T Developed torque (N·m).
T4 Timer numbered by 4 used in the processor memory.
Tags Data from the I/O images of a PLC is transferred to memory and is
associated with descriptors.
Tej Torque generated by the jth phase (N·m).
TL Load torque (N·m).
TON Timer On-Delay instruction.
TRENDS Showing the trends of the process.
TT Time timing instruction bit (bit 14 in the timer control word).
u
Lph Induced voltage on the phase inductance (V).
u
ph
The applied phase voltage (V).
The permeability of the material (Tesla-meters per Amp-turns).
Wc Co-energy in joule (J).
Wf Stored field energy (J).
Word 16 bits.
Wm Work (J).
Infinitesimal displacement.
The electrical permittivity of the material (F/m).
0 Permittivity (F/m).
Rotor position.
j Rotor position with respect to the jth phase.
2 The constitutive transformation.
Free electric charge density (coulombs per cubic metre).11
e The electrical susceptibility of the material (dimensionless).
m The magnetic susceptibility of the material (dimensionless).
Rotor's angular speed (radians per second).
λ(θ) Flux linkage (weber-turns).
∇ * The curl operator.
. Word delimiter.
∇ . The divergence operator.
/ Bit delimiter.
: Element delimiter.
Rotor pole arc/pole pitch ratio.
Stator pole arc/pole pitch ratio.
σ The conductivity (siemens per meter).
Φ The field flux (Wb).12
TABLE OF CONTENTS
ACKNOWLEDGMENT 3
ABSTRACT 4
STATEMENT OF SOURCES 6
GLOSSARY of TERMS and SYMBOLS 7
CHAPTER 1: INTRODUCTION 15
1.1 Switched reluctance motor 15
1.2 Finite element analysis 33
1.3 Switched reluctance motors control 33
1.4 Conclusion 34
CHAPTER 2: FINITE ELEMENT METHOD (FEM) 36
2.1 Introduction. 36
2.2 Coupled field-circuit problems. 38
2.2.1 Numerical methods. 40
2.2.2 Modelling by field and circuit equations. 40
2.2.3 Coupling with external circuits. 41
2.2.4 Coupling with power electronics. 42
2.3 Finite element model for electrical machines. 43
2.3.1 Maxwell’s equations. 43
2.3.2 Source of the field. 44
2.3.3 Material Properties. 45
2.3.4 Stator windings. 46
2.4 Motion and electromagnetic torque. 47
2.5 Ansoft software and finite element analysis. 48
2.6 Conclusion. 5313
CHAPTER 3: SRM DESIGN (SIMULATION RESULTS) 54
3.1 SRM design. 54
3.2 Simulation and analysis 59
3.3 Effect of dimensional variations 68
3.3.1 Dimensional variation for rotor pole 68
3.3.2 Effects of variations for stator pole 79
3.4 Optimised design for 3 phase SRM 87
3.5 Optimised design for 4 phase SRM 89
3.6 Simulation results by MATLAB 94
3.7 Conclusions 101
CHAPTER 4: FUZZY LOGIC CONTROLLER (FLC) 102
4.1 Introduction 102
4.2 Fuzzy block at the MATLAB prompt 103
4.3 Fuzzy logic controller structure 111
4.4 Simulation results for FLC of SRM 116
4.4.1 System operating rules 116
4.4.2 Membership functions 119
4.4.3 Defuzzification 122
4.5 Conclusions 127
CHAPTER 5: CONTROLLERS FOR SRM 128
5.1 SRM controller using PLC 128
5.2 SRM converter topology for PLC 135
5.3 Experimental results for PLC 139
5.4 Cam positioner controller 143
5.5 Tracking system for the rotor position 14414
5.6 The firing angle sequence for the electronic cam positiner 148
5.7 SRM and its cam positiner controller 150
5.8 SRM converter topology for the cam positioner controller 151
5.9 Cam positioner controller hardware 152
5.10 Experimental Results 154
5.10.1 Torque/current characteristics 154
5.10.2 Speed/torque characteristics 155
5.10.3 Maximum efficiencies for 4 phase SRM 156
5.11 Conclusions 158
CHAPTER 6: CONCLUSIONS AND RECOMMENDATIONS 160
FOR FUTURE WORK
6.1 Conclusions 160
6.2 Recommendations for future work 163
APPENDIX A: PROGRAM CODE 164
A.1 Ladder 2 (the main ladder) 164
A.2 Ladder 3 (the firing sequence) 165
A.3 Ladder 4 (the output) 168
A.4 Ladder 5 (the timers) 170
APPENDIX B: VIDEO CLIPS AND PHOTOS 174
APPENDIX C: PUBLISHED WORK 175
REFERENCES
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