Jean-Marc Chapallaz, Jacques Dos Ghali, Peter Eichenberger, Gerhard Fischer
Manual on Induction Motors Used as Generators (eBook, PDF)
A Publication of Deutsches Zentrum für Entwicklungstechnologien - GATE A Division of the Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ) GmbH
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Jean-Marc Chapallaz, Jacques Dos Ghali, Peter Eichenberger, Gerhard Fischer
Manual on Induction Motors Used as Generators (eBook, PDF)
A Publication of Deutsches Zentrum für Entwicklungstechnologien - GATE A Division of the Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ) GmbH
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Produktdetails
- Verlag: Vieweg+Teubner Verlag
- Seitenzahl: 213
- Erscheinungstermin: 21. November 2013
- Deutsch
- ISBN-13: 9783663140443
- Artikelnr.: 53388905
Dieser Download kann aus rechtlichen Gründen nur mit Rechnungsadresse in A, B, BG, CY, CZ, D, DK, EW, E, FIN, F, GR, HR, H, IRL, I, LT, L, LR, M, NL, PL, P, R, S, SLO, SK ausgeliefert werden.
1. Introduction and Overview.- 2. The Concept of Induction Motors Used as Generators.- 3. Theory of the Three-Phase Induction Machine.- 4. Selecting an Induction Motor to be Used as a Generator.- 5. Operation and Control.- 6. Safety and Protection.- 7. Economic Considerations.- 8. Worked Examples.- Appendices:.- Appendix A: Basic Theory of Electrical Engineering.- 1. Introduction.- 1.1 Electrical Circuit.- 1.2 Voltage.- 1.3 Current.- 1.4 Effects of Current Flow.- 1.5 Power.- 2. Direct Current (DC).- 2.1 Resistance.- 2.1.1 General Formulae.- 2.1.2 Ohm's Law.- 2.1.3 Power Losses - Joule's Law.- 2.1.4 Connection of Resistances.- 2.2 Capacitance of Capacitors.- 2.2.1 General.- 2.2.2 Capacitance.- 2.2.3 Variation of Current and Voltage.- 2.2.4 Stored Energy of a Capacitor.- 2.2.5 Connection of Capacitors.- 3. Magnetism - Electromagnetism.- 3.1 Effects of Magnetism.- 3.2 Magnetism and Electric Current.- 3.3 Magnetic Flux and Magnetic Flux Density.- 3.4 Magnetic Characteristic - Magnetization Curve.- 3.5 Generation of an Electromagnetic Force.- 4. Induced Voltage.- 4.1 General.- 4.2 Self-induction.- 4.3 Transformer Induced Voltage.- 4.4 Eddy Currents.- 5. Inductance.- 5.1 Definition.- 5.2 Connection of Inductances.- 5.2.1 Inductors in series.- 5.2.2 Inductors in parallel.- 6. DC Generators and Motors.- 6.1 Working Principle of a DC Generator.- 6.2 Working Principle of a DC Motor.- 7. Alternating Current (AC).- 7.1 Advantages of Alternating Current.- 7.2 Characteristics of the AC signal.- 7.3 Phasor Diagrams.- 7.4 Notations and Definitions.- 7.5 Power in AC.- 7.6 Power factor, cosf.- 7.7 Circuit Elements in AC.- 7.7.1 Pure Resistive Circuit.- 7.7.2 Pure Inductive Circuit.- 7.7.3 Pure Capacitive Circuit.- 7.8 Impedance Z in Series Connections.- 7.9 Impedance Z inParallel Connections.- 7.10 Resonance.- 7.10.1 Resonance for series connection of L and C.- 7.10.2 Resonance for parallel connection of L and C.- 7.11 Correction of the Power Factor cos ph.- 7.11.1 General.- 7.11.2 Calculation of the Compensating Capacitance.- 8. Three-Phase System.- 8.1 General.- 8.2 Generating Three-Phase Voltage and Current.- 8.3 Connections.- 8.3.1 Definitions.- 8.3.2 Star or Wye Connection.- 8.3.3 Delta Connection.- 8.3.4 Power in three-phase systems.- 8.3.5 Conclusion.- 8.4 Rotor Speed and Generated Frequency.- 8.5. Three-Phase Systems and Consumer Load.- 8.6 Power Factor Correction in Three-Phase Systems.- 9. Voltage Drop and Conductor Size.- 9.1 General.- 9.2 Voltage Drop in DC.- 9.3 Voltage Drop in Single-Phase AC.- 9.3.1 Considering line resistance only.- 9.3.2 Considering resistance and inductance of a line.- 9.4 Voltage Drop in Three-Phase AC.- 10. Answers to the Examples.- 10.1 Example 1 / page 120.- 10.2 Example 2 / page 124.- 10.3 Example 3 / page 125.- 10.4 Example 4 / page 164.- 10.5 Example 5 /page 173.- 10.6 Example 6 /page 174.- 10.7 Example 7 /page 177.- Appendix B: Selected Diagrams and Tables for Electrical Engineering Design.- Bl) Standard Wire and Cable Sections and Permissible Currents (Heating).- B2) End-use appliances and their approximate power demand.- B3) Efficiency and cos (J) versus power for induction motors.- B4) Slip versus power for induction machines (non-saturated motors).- B5) General range of efficiencies for synchronous generators.- B6) General range of efficiencies for transmission gearings (flat and V-belts, gearboxes).- B7) Turbine types and specific speeds in function of head and flow.- B8) Turbine efficiencies (at nominal flow).- B9) Turbine efficiencies (at part flow).- Appendix C: No-Load and Blocked-Rotor Tests and Determination of the Circle Diagram.- 1. General.- 2. Measurement of stator resistance.- 3. No-Load Test.- 4. Blocked-Rotor Test.- 5. Determination of the Circle.- 6. Example.- 6.1 Motor data (from rating plate):.- 6.2 Motor resistances (using an ?-meter).- 6.3 No-load test.- 6.4 Blocked-rotor test.- 6.5 Determination of the circle.- Appendix D: Measuring Techniques and Required Equipment.- 1. Accuracy of Measurements.- 2. Voltage Measurement.- 3. Current Measurement.- 4. Active Power Measurement by Means of Wattmeters.- 4.1 Principle of a Wattmeter.- 4.2 Current Transformer.- 4.3 The Constant of a Wattmeter.- 4.4 Active Power Measurement in a Three-Phase System.- 4.4.1 By Means of a Single Wattmeter.- 4.4.2 By Means of Three Wattmeters.- 4.4.3 By Means of Two Wattmeters - Connection according to Aron.- 5. Active Power Measurement by Means of a kW-Hour Meter.- 6. Portable Instruments - Multimeters.- Appendix E: List of Manufacturers of Induction Generator Controllers.- Appendix F: References.
1. Introduction and Overview.- 2. The Concept of Induction Motors Used as Generators.- 3. Theory of the Three-Phase Induction Machine.- 4. Selecting an Induction Motor to be Used as a Generator.- 5. Operation and Control.- 6. Safety and Protection.- 7. Economic Considerations.- 8. Worked Examples.- Appendices:.- Appendix A: Basic Theory of Electrical Engineering.- 1. Introduction.- 1.1 Electrical Circuit.- 1.2 Voltage.- 1.3 Current.- 1.4 Effects of Current Flow.- 1.5 Power.- 2. Direct Current (DC).- 2.1 Resistance.- 2.1.1 General Formulae.- 2.1.2 Ohm's Law.- 2.1.3 Power Losses - Joule's Law.- 2.1.4 Connection of Resistances.- 2.2 Capacitance of Capacitors.- 2.2.1 General.- 2.2.2 Capacitance.- 2.2.3 Variation of Current and Voltage.- 2.2.4 Stored Energy of a Capacitor.- 2.2.5 Connection of Capacitors.- 3. Magnetism - Electromagnetism.- 3.1 Effects of Magnetism.- 3.2 Magnetism and Electric Current.- 3.3 Magnetic Flux and Magnetic Flux Density.- 3.4 Magnetic Characteristic - Magnetization Curve.- 3.5 Generation of an Electromagnetic Force.- 4. Induced Voltage.- 4.1 General.- 4.2 Self-induction.- 4.3 Transformer Induced Voltage.- 4.4 Eddy Currents.- 5. Inductance.- 5.1 Definition.- 5.2 Connection of Inductances.- 5.2.1 Inductors in series.- 5.2.2 Inductors in parallel.- 6. DC Generators and Motors.- 6.1 Working Principle of a DC Generator.- 6.2 Working Principle of a DC Motor.- 7. Alternating Current (AC).- 7.1 Advantages of Alternating Current.- 7.2 Characteristics of the AC signal.- 7.3 Phasor Diagrams.- 7.4 Notations and Definitions.- 7.5 Power in AC.- 7.6 Power factor, cosf.- 7.7 Circuit Elements in AC.- 7.7.1 Pure Resistive Circuit.- 7.7.2 Pure Inductive Circuit.- 7.7.3 Pure Capacitive Circuit.- 7.8 Impedance Z in Series Connections.- 7.9 Impedance Z inParallel Connections.- 7.10 Resonance.- 7.10.1 Resonance for series connection of L and C.- 7.10.2 Resonance for parallel connection of L and C.- 7.11 Correction of the Power Factor cos ph.- 7.11.1 General.- 7.11.2 Calculation of the Compensating Capacitance.- 8. Three-Phase System.- 8.1 General.- 8.2 Generating Three-Phase Voltage and Current.- 8.3 Connections.- 8.3.1 Definitions.- 8.3.2 Star or Wye Connection.- 8.3.3 Delta Connection.- 8.3.4 Power in three-phase systems.- 8.3.5 Conclusion.- 8.4 Rotor Speed and Generated Frequency.- 8.5. Three-Phase Systems and Consumer Load.- 8.6 Power Factor Correction in Three-Phase Systems.- 9. Voltage Drop and Conductor Size.- 9.1 General.- 9.2 Voltage Drop in DC.- 9.3 Voltage Drop in Single-Phase AC.- 9.3.1 Considering line resistance only.- 9.3.2 Considering resistance and inductance of a line.- 9.4 Voltage Drop in Three-Phase AC.- 10. Answers to the Examples.- 10.1 Example 1 / page 120.- 10.2 Example 2 / page 124.- 10.3 Example 3 / page 125.- 10.4 Example 4 / page 164.- 10.5 Example 5 /page 173.- 10.6 Example 6 /page 174.- 10.7 Example 7 /page 177.- Appendix B: Selected Diagrams and Tables for Electrical Engineering Design.- Bl) Standard Wire and Cable Sections and Permissible Currents (Heating).- B2) End-use appliances and their approximate power demand.- B3) Efficiency and cos (J) versus power for induction motors.- B4) Slip versus power for induction machines (non-saturated motors).- B5) General range of efficiencies for synchronous generators.- B6) General range of efficiencies for transmission gearings (flat and V-belts, gearboxes).- B7) Turbine types and specific speeds in function of head and flow.- B8) Turbine efficiencies (at nominal flow).- B9) Turbine efficiencies (at part flow).- Appendix C: No-Load and Blocked-Rotor Tests and Determination of the Circle Diagram.- 1. General.- 2. Measurement of stator resistance.- 3. No-Load Test.- 4. Blocked-Rotor Test.- 5. Determination of the Circle.- 6. Example.- 6.1 Motor data (from rating plate):.- 6.2 Motor resistances (using an ?-meter).- 6.3 No-load test.- 6.4 Blocked-rotor test.- 6.5 Determination of the circle.- Appendix D: Measuring Techniques and Required Equipment.- 1. Accuracy of Measurements.- 2. Voltage Measurement.- 3. Current Measurement.- 4. Active Power Measurement by Means of Wattmeters.- 4.1 Principle of a Wattmeter.- 4.2 Current Transformer.- 4.3 The Constant of a Wattmeter.- 4.4 Active Power Measurement in a Three-Phase System.- 4.4.1 By Means of a Single Wattmeter.- 4.4.2 By Means of Three Wattmeters.- 4.4.3 By Means of Two Wattmeters - Connection according to Aron.- 5. Active Power Measurement by Means of a kW-Hour Meter.- 6. Portable Instruments - Multimeters.- Appendix E: List of Manufacturers of Induction Generator Controllers.- Appendix F: References.