an investigation of dual stator winding induction machines

LIST OF FIGURES
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Figure 1.1 The diagram of a three-phase voltage source converter.................................... 4
Figure 1.2 The diagrams of uniform air gap and air gap eccentricity conditions. (a)
uniform air gap condition, (b) static eccentricity condition, (c) dynamic eccentricity
condition, (d) mixed eccentricity condition.............................................................. 13
Figure 1.3 The diagram of self-excited induction generator
............................................. 17
Figure 1.4 The diagrams of PWM converter excited induction generators. (a) PWM
converter assisted induction generators, (b) PWM converter driven induction
generators.................................................................................................................. 19
Figure 1.5 The general diagram of a speed control system using constant V/Hz method 24
Figure 1.6 The block diagram of a scalar torque control system
...................................... 26
Figure 2.1 Single winding dissimilar pole number distribution ....................................... 47
Figure 2.2 Flux density as a function of K 1 to determine operating condition ................ 52
Figure 2.3 Normalized air gap flux density ...................................................................... 54
Figure 2.4 Normalized yoke flux...................................................................................... 54
Figure 2.5. Detailed stator slot configuration ................................................................... 67
Figure 2.6 End winding configuration.............................................................................. 68
Figure 2.7 The maximum value of the air gap flux density under different pole ratios (the
value of pole ratio has been given as numbers) and different δ values when
B = 0.
4 T and B 5 T . 0 = . ...................................................................................... 76
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