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SENSORLESS FIELD ORIENTED CONTROL O
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Table of Contents List of Figures..
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CHAPTER 5 - Field Oriented Control
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List of Figures Figure 2.1 - Radial
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Figure 3.29 - Arbitrary space vecto
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Figure 4.44 - ZS components of some
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Figure C.13 - Single-turn full-pitc
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List of Symbols Symbol Meaning Unit
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Abbreviations ACIM AC induction mot
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Superscripts * commanded value ref
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CHAPTER 1 - Introduction Historical
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vector theory to model a machine, w
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publications and magazines, and Int
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elationship between SVM and other P
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CHAPTER 2 - Fundamentals of Electri
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Preliminaries In reading the litera
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Taxonomy of Motors There is any num
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characteristics (the DC load curren
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torque component, sturdily construc
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Figure 2.7 - Cross sections of some
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draw the line between the solenoida
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These texts generally attribute the
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N B A B Y x(t) (2.6) The induc
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extended to the rotational case lat
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present analysis). When this is tru
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Figure 2.16 - Components of total f
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As aforementioned a spatial analysi
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clear the meaning, but the reader i
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Figure 2.20 - Elementary brushless
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called the per-phase torque functio
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Expressing bEMF in terms of the bEM
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Equation (2.44) is the component of
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d R( r) ke( r) kt( r) sin( r) (2.
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General Electromechanical Models Th
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Figure 2.28 - Phase-variable simula
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Trapezoidal and Sinusoidal BPMS Mot
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Figure 2.29 - Back-EMF and drive cu
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Figure 2.31 - Back-EMF and drive cu
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3 KT Ke 2 (sinusoidal) K 2 K (tra
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control scheme must keep sinusoidal
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with misconceptions. The primary is
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Part I - Sinusoidal BPMS Motors wit
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grounded-neutral wye or delta conne
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N e f A ( ) i 2 N e f B ( ) i 2
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Figure 3.7 - Developed view at zero
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Figure 3.9 - Developed view showing
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Although Equations (3.6) or (3.7) a
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direction. The contributions always
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sinusoidal electrical variable will
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Figure 3.14 - Cross section of two
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3 N e (3.6): f ( , t) I p cos(
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In the previous chapter the per-pha
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peak value is represented as an upp
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Figure 3.21 - Time relationship bet
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another and thus could be placed in
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more widely understood theory (such
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other methods, although it has clos
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The SV as a Vector The first facet
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j0 j0 j0 aˆ 1 0 1 bˆ j e e e
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j j ee 1 cos( ) (3.45) 2 3 j t x
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Notice that the amplitude of the MM
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Figure 3.27 - Equivalent MMF produc
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Ne 1 jj f , t i e i * e 2 2
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distribution that is cosinusoidal i
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3 Ne j t f Ie p 2 2 . This
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j set θ to anything. Taking the re
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epresent any physically-distributed
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lumped-parameter model in this repo
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x kCx (3.75) abc The set of varia
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phase variable axes; three axes in
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The component MMFs act away from th
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common choice is to force the power
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As an example, find the SV that cor
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- Page 149 and 150: Figure 3.32 - Arbitrary SV referenc
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- Page 153 and 154: stator’s perspective and at R fr
- Page 155 and 156: The potential discrepancy (p.108) w
- Page 157 and 158: x cos( r) sin( r) xd x sin(
- Page 159 and 160: It must be emphasized that we have
- Page 161 and 162: in relative time like an oscillogra
- Page 163 and 164: Part III - SV Theory Applied to Sin
- Page 165 and 166: In Equation (3.135) Z has elements
- Page 167 and 168: to use SV theory. It may be helpful
- Page 169 and 170: Figure 3.42 - Coupling between d- a
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- Page 177 and 178: Figure 3.47 - Simulation diagram fo
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- Page 181 and 182: Overview of Voltage Source Inverter
- Page 183 and 184: In addition to measuring voltages w
- Page 185 and 186: then there would be periods during
- Page 187 and 188: Figure 4.9 - Gating and POLE voltag
- Page 189 and 190: Figure 4.11 - Ideal voltage wavefor
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- Page 195 and 196: Figure 4.18 - Fundamental gain and
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- Page 201 and 202: Figure 4.24 - Instantaneous phase-A
- Page 203 and 204: Figure 4.26 - Base SVs showing the
- Page 205 and 206: Figure 4.27 - Transformed voltage w
- Page 207 and 208: also correspond to six-step squarew
- Page 209 and 210: was fed to the SVM inverter as a SV
- Page 211 and 212: Figure 4.31 - Temporal limit of inv
- Page 213 and 214: Figure 4.34 - SVM overmodulation re
- Page 215 and 216: Checking sextant s 23 again for thi
- Page 217 and 218: SVM Implementation The block diagra
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- Page 223 and 224: Similarly, when the modulation inde
- Page 225 and 226: Summary and Conclusion The two-leve
- Page 227 and 228: CHAPTER 5 - Field Oriented Control
- Page 229 and 230: torque production; this is called d
- Page 231 and 232: Figure 5.3 - Torque control of sinu
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- Page 235 and 236: Figure 5.9 - Comparison of referenc
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- Page 239 and 240: Figure 5.13 - Torque control of sin
- Page 241 and 242: To analyze a salient machine one mu
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- Page 245 and 246: Figure 5.19 - Buried permanent magn
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appears that this is very much rela
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Stationary and Synchronous Regulato
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stationary regulator had. For compl
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This coupling can be mitigated by m
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educes to two independent circuits,
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D, some of the 120° methods are ap
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d d v Ri Ls i R dt dt The r
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section a state-space model for the
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Figure 6.6 - Full state feedback (o
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State-Space Model of BPMS Motor A s
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Figure 6.9 - FOC block diagram. The
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loop). A second way to implement th
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knowing the rotor position from ini
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[11] E. Clarke, Circuit analysis of
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Control Systems, Linear Analysis [4
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[77] J.M.D. Murphy, F.G. Turnbull,
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Machine Modeling, Analysis [103] J.
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THI, SVM, SPWM [127] J.A. Houldswor
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Wisconsin-Madison. [Online]. Availa
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Angle Tracking [175] D. Morgan, “
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Appendix A - Elementary Electromagn
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L i (A.8) S SS S SR S SS SR (A.9
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First the self-flux-linkage of an i
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vAN R iA LM iA eA d v R i
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Figure B.3 - One-half of the flux p
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Equations (B.27) and (B.28) are for
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Fundamental Relationships Figure C.
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Figure C.3 - Sinusoidal winding den
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manufactured compared to the steppe
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phase winding of Figure C.4 will ha
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Distributed N Fp i 2 (C.5) Figu
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alanced machine only odd harmonics
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sinusoidal windings with a sinusoid
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0, and since the direction of inte
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That the rotor-stator flux linkage
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Figure C.17 - Summary of rotor-stat
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Figure C.19 - Amplitudes of harmoni
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triangle with an amplitude whose nu
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Returning to Figure C.18 it is clea
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torque will describe the torque pro
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However, Equation (D.2) is incorrec
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the same order as the PS set (arran
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Implications of the ZS Component Th
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Figure D.6 - Neutral voltage of loa
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3v 3e 3v v v v v v v 3v AM BM CM A
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components of source voltage sum to
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Equation (D.25) and instantaneous q
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If a ZS component could possibly be
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xA X1cos( t) X3cos(3 t) X5cos(5 t)
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Figure D.11 - 3-D base vectors of 1
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the Clarke transform is used. Howev
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Appendix E - Park Transforms This a
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Appendix F - Useful Mathematical Re
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335