Apparatus Section 4: Induction Machines: Induction Generator
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Source Metadata
Section titled “Source Metadata”| Field | Value |
|---|---|
| Source | Theoretical Elements of Electrical Engineering |
| Year | 1915 |
| Section ID | theoretical-elements-electrical-engineering-section-110 |
| Location | lines 21158-21588 |
| Status | candidate |
| Word Count | 2480 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 0 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”IV. Induction Generator 1. INTRODUCTION 163. In the range of slip from s = 0 to s = 1, that is, from synchronism to standstill, torque, power output, and power input of the induction machine are positive, and the machine thus acts as a motor, as discussed before. Substituting, however, in the equations in paragraph 1 for s values > 1, corresponding to backward rotation of the ma- chine, the power input remains positive, the torque also remains positive, that is, in the same direction as for s < 1 ; but since the speed (I — s) becomes negative or in opposite direction, the power output is negative, that is, the torque in opposite direc- tion to the speed. In this case the machine consumes electrical energy in its primary and mechanical energy bySource-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Radiation / light
Section titled “Radiation / light”... ng power of the induction machine at backward INDUCTION MACHINES 341 rotation is, as a rule, not considerable, excepting when using high resistance in the armature circuit. Z0« Zj- 0.1+ 0.3 j Y - 0.01 - 0.1 J 110 VOLTS CONSTANT FREQUENCY -1000 -2000 -3000 -4000 -5000 -6000 -7000 -8000 -9000 FIG. 185. — Induction generator load curves. TORQUE POWER 8000 _0 loo; -4000 -6000 113 1.2 1U 1009 0,8 0:7 o!e 0 5 ...Field language
Section titled “Field language”... rator load curves. 3. POWER-FACTOR OF INDUCTION GENERATOR 155. The induction generator differs 'essentially from a syn- chronous alternator (that is, a machine in which an armature revolves relatively through a constant or continuous magnetic field) by having a power-factor requiring leading current ; that is, in the synchronous alternator the phase relation between current and terminal voltage depends entirely upon the external circuit, and according to the nature of the circuit connect ...Impedance / reactance
Section titled “Impedance / reactance”... frequency decreases with the load. In the calculation of these induction generator curves for con- INDUCTION MACHINES 343 slant speed the change of frequency with the load has obviously to be considered, that is, in the equations the reactance x0 has to be replaced by the reactance XQ (1 — s), otherwise the equa- tions remain the same. FIG. 187. — Induction generator load curves. 3. POWER-FACTOR OF INDUCTION GENERATOR 155. The induction generator differs 'essentially from a sy ...Dielectricity / capacity
Section titled “Dielectricity / capacity”... in the same system, or from synchronous alternating- current generators operated in parallel with the induction gen- erator, in which latter case, however, these currents can be said to come from the synchronous alternator as lagging currents. Electrostatic condensers, as an underground cable system, may also be used for excitation, but in this case besides the condensers a synchronous machine or other means is required to secure stability. The induction machine may thus be considered as cons ...Chapter-Local Concept Hits
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| Light | 2 | seeded |
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Modern Engineering Reading Prompts
Section titled “Modern Engineering Reading Prompts”- Radiation / light: Compare the chapter’s radiation vocabulary with modern electromagnetic radiation, spectral frequency, wavelength, absorption, and illumination engineering.
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- Magnetism: Track flux, reluctance, permeability, magnetizing force, and loss language against modern magnetic-circuit terminology.
Ether-Field Interpretive Boundary
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