Apparatus Section 4: Synchronous Machines: Self-inductance
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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-25 |
| Location | lines 8907-9034 |
| Status | candidate |
| Word Count | 647 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 0 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”IV. Self-inductance 12. The effect of self -inductance is ^ similar to that of armature reaction, FlQ 50._Diagram of e m fs> and depends upon the phase relation in loaded generator, in the same manner. If EI = real generated voltage, 0i = lag of current behind generated voltage EI, the magnetic flux produced by the arma- ture current I is in phase with the current, and thus the counter e.m.f. of self-inductance is in quadrature behind the current, and therefore the e.m.f. consumed by self-inductance is in quadrature ahead of the current. Thus in Fig. 50, denoting OEi = EI the generated e.m.f., the current is 01 = 7; lagging 61 behind OEi, the e.m.f. consumed by self -inductance OE "i, is 90 degrees ahead of the current, and the virtual generated e.m.f. E2,Source-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Field language
Section titled “Field language”... s e.m.f. Ez is OF = F, Fa I E, FIG. 52. — Diagram of generator e.m.fs. and m.m.fs. for non-reactive load. 90 deg. ahead of OE2. It is the resultant of the armature m.m.f. or armature reaction and of the impressed m.m.f. or field excita- tion. The armature m.m.f. is in phase with the cur- rent 7, and is nl in a single-phase machine, n \/2 / in a quarter-phase machine, 1.5 \/2 nl in a three- phase machine, if n = number of armature turns per pole and phase. The ...Impedance / reactance
Section titled “Impedance / reactance”... phase re- lation npon the e.m.f. of an alternating-current generator. Let E — terminal voltage per machine circuit, 7 = current per machine circuit, and 0 = lag of the current behind the terminal voltage. Let r = resistance, x = reactance of the alternator armature. FIG. 51. — Diagram showing combined effect of armature reaction and arma- ture self-inductance. Then, in the vector diagram, Fig. 51, OE = E, the terminal voltage, assumed as zero vector. 01 = I, the current, ...Magnetism
Section titled “Magnetism”... similar to that of armature reaction, FlQ 50._Diagram of e m fs> and depends upon the phase relation in loaded generator, in the same manner. If EI = real generated voltage, 0i = lag of current behind generated voltage EI, the magnetic flux produced by the arma- ture current I is in phase with the current, and thus the counter e.m.f. of self-inductance is in quadrature behind the current, and therefore the e.m.f. consumed by self-inductance is in quadrature ahead of the ...Alternating current
Section titled “Alternating current”IV. Self-inductance 12. The effect of self -inductance is ^ similar to that of armature reaction, FlQ 50._Diagram of e m fs> and depends upon the phase relation in loaded generator, in the same manner. If EI = real generated voltage, 0i = lag of current behind generated voltage EI, the magnetic flux produced by the arma ...Chapter-Local Concept Hits
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Modern Engineering Reading Prompts
Section titled “Modern Engineering Reading Prompts”- Field language: Read for whether field language is mechanical, geometrical, causal, descriptive, or simply a convenient engineering model.
- Impedance / reactance: Translate historical opposition terms into modern impedance, admittance, conductance, susceptance, and complex-plane notation.
- Magnetism: Track flux, reluctance, permeability, magnetizing force, and loss language against modern magnetic-circuit terminology.
- Alternating current: Compare Steinmetz’s AC language with modern sinusoidal steady-state analysis, RMS quantities, phase, and phasor notation.
Ether-Field Interpretive Boundary
Section titled “Ether-Field Interpretive Boundary”- Field language: Field-pressure or field-gradient interpretations can be explored here only after the explicit source passage and modern engineering translation are kept distinct.
- Magnetism: Centrifugal/divergent magnetic-field readings are interpretive overlays, not automatic historical claims.
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