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Tables of Contents for Induction Motors
Main Parameters of Induction Motors
Structural Elements of Induction Motors
2
5
Electromagnetic Space Vectors and General Equivalent Circuits
Magneto-Motive Forces and Currents
14
8
Magnetic Energy Stored In the Machine-Magnetizing Energy
22
2
General Equivalent Circuits
26
3
Steady-State Three-Phase Induction Motors
Statement of the Problem
33
5
Determination of the Equivalent Circuit Parameters
38
3
Magnetizing Energy and Torque
41
1
Input Impedance and Admittance-Current-Transfer Ratio
41
3
Voltage-Source Line-Fed Induction Motors Under Steady-State Conditions
44
8
Phase Currents44
1
Torque45
1
Magnetizing Energy46
1
Full-Load Regime47
2
Order of Magnitude of Variables in a Voltage-Source Line-Fed Induction Motor49
2
Line-Fed Induction Motors at Start-up51
1
Current-Source Line-Fed Induction Motors
54
5
Magnetizing Energy54
1
Torque55
2
Order of Magnitude of Variables in a Current-Source Line-Fed Induction Motor57
1
Current-Source Line-Fed Induction Motors at Start-Up58
1
Negative-Sequence Applied Voltages
59
3
Induction Motors Fed from Unbalanced Voltage Source
62
5
Phase Currents64
1
Magnetizing Energy64
1
Torque64
3
Asymmetric Three-Phase Induction Motors in Steady-State Regimes
67
10
Steady-State Single-Phase Induction Motors
Equations for Single-Phase Motors
79
4
Stator Currents80
1
Rotor Currents80
1
Magnetizing Energy81
1
Torque82
1
Line-Fed Single-Phase Induction Motors
83
4
Line Voltage83
2
Magnetizing Energy and Torque85
2
Phase Current87
1
Determination of the Equivalent Circuit Parameters
91
4
Induction Motors in Transient Regimes
Operating Equations in Transient Regimes
96
1
Transient Analysis in the time Domain
96
6
Electromagnetic Transients with Rapidly Changing Angular Velocity97
1
Electromagnetic Transients with Slowly Changing Angular Velocity98
2
Transient Analysis of Inverter-Fed Induction Motors100
2
Transient Analysis in the Frequency Domain
102
2
Examples of Simulation
104
5
Start-Up from Standstill104
1
Take-Over of a De-Energized Motor105
1
Inverter-Fed Induction Motors with Frozen Power Switches105
4
Inverter-Fed Induction Motors
Voltage-Source Inverters
110
2
Natural Pulse Pattern of Inverters
112
3
Natural Pulse Pattern of a Two-Level Inverter112
1
Natural Pulse Pattern of a Three-Level Inverter113
2
Periodic Scanning Modes-Output Waveforms115
2
Spectral Analysis of Periodic Waveforms-Total Harmonic Distortion
117
1
Space Vector Modulation
118
6
Basic Idea118
3
Uniform Waveforms Obtained Using Space Vector Modulation121
1
Required Switching Frequency122
1
Output Current Waveforms123
1
Voltage Space Vector Applied Across the Load
124
1
Y-Connected Load124
1
Δ-Connected Load124
1
Harmonic Components of Single-Pulse Waveforms126
2
Harmonic Components of P-Pulse Waveforms128
2
Harmonic Components of Uniform Waveforms130
7
Harmonic Components of Quasi-Uniform Waveforms137
5
Harmonic Components of Modulated Waveforms142
6
Current Harmonics in Various Load Phases148
1
Current Harmonics of Input Lines149
1
Current-Source Inverters
150
7
Induction Motors Torque Control
Principle of the Computed Charge Acceleration Method (C.C.A.M)159
3
Implementation of the C.C.A.M162
6
Other Vector Control Approaches168
2
Vector Control Simulation Results170
9
Scalar Control Principle180
2
Scalar Control Operating Conditions182
8
Scalar Control Simulation Results190
8
Evaluation of the Stator and Rotor Resistance
198
4
Principle of Speed Calculation
202
1
Appendix A Field-Oriented Control
A.2 Preliminary Investigations
205
2
A.3 Field-Oriented Control
207
6
Appendix B Direct Torque Control
B.2 Direct Torque Control Principle
213
4
Appendix C Double-Cage Induction Motors
C.2 Voltage Equations in Double-Cage Induction Motors
217
2
C.3 General Equivalent Circuit of Double-Cage Induction Motors
219
3
C.4 Steady-State Equivalent Circuit of Double-Cage Induction Motors
222
3
Appendix D Transient Analysis in Single-Phase Induction Motors
D.2 Transients in Three-Phase Induction Motors
225
2
D.3 Transients in Single-Phase Induction Motors
227
2
Appendix E Synchronous Motors Torque Control
E.2 Operating Equations of Cylindrical-Rotor Synchronous Motors
230
3
E.3 Torque Control of Cylindrical-Rotor Synchronous Motors
233
1
E.4 Examples of Simulations
234
3
E.5 Operating Equations for Salient-Pole Synchronous Motors
237
2
E.6 Torque Control of Salient-Pole Synchronous Motors
239
3
E.7 Operating Equations for Synchronous Machines with Damper Cages and Field Winding
242
15
E.7.1 Cylindrical-Rotor Synchronous Machines244
8
E.7.2 Salient-Pole Synchronous Machines252
5
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