Apparatus Section 5: Synchronous Machines: Synchronous Reactance
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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-26 |
| Location | lines 9035-9169 |
| Status | candidate |
| Word Count | 504 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 0 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”V. Synchronous Reactance 14. In general, both effects, armature self-inductance and armature reaction, can be combined by the term " synchronous reactance." FIG. 55. — Diagram showing effect of synchronous reactance. FIG. 56. — Diagram of generator e.m.f s. showing affect of synchronous reactance with non-reactive load. In a polyphase machine, the synchronous reactance is different, and lower, with one phase only loaded, as " single-phase synchro- nous reactance," than with all phases uniformly loaded, as " poly- phase synchronous reactance." The resultant armature reac- tion of all phases of the polyphase machine is higher than that with the same current in one phase only, and so also the self- SYNCHRONOUS MACHINES 137 inductive flux, as resultant flux of several phases, and thus rep- resents a higher synchronous reactance. Let r = effective resistance, XQSource-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Impedance / reactance
Section titled “Impedance / reactance”V. Synchronous Reactance 14. In general, both effects, armature self-inductance and armature reaction, can be combined by the term " synchronous reactance." FIG. 55. — Diagram showing effect of synchronous reactance. FIG. 56. — Diagram of generator e.m.f s. showin ...Complex quantities
Section titled “Complex quantities”... ator e.m.fs. Showing effect of synchro- nous reactance with leading reactive load 6 = — 60 degrees. I = current lagging by the angle EOI = 0 behind the terminal voltage. OE\ = Ir is the e.m.f. consumed by resistance, in phase with 01 j and OE'o = Ix0 the e.m.f. consumed by the synchronous reactance, 90 degrees ahead of the_current OI. OE'i and OE'Q combined give OE' = E' the e.m.f. consumed by the synchronous impedance. Combining OE'i, OE'o, OE gives the nominal generate ...Magnetism
Section titled “Magnetism”... ed, as " poly- phase synchronous reactance." The resultant armature reac- tion of all phases of the polyphase machine is higher than that with the same current in one phase only, and so also the self- SYNCHRONOUS MACHINES 137 inductive flux, as resultant flux of several phases, and thus rep- resents a higher synchronous reactance. Let r = effective resistance, XQ = synchronous reactance of armature, as discussed in Section II. Let E = terminal voltage, / = current, 0 = an ...Field language
Section titled “Field language”... e synchronous reactance, 90 degrees ahead of the_current OI. OE'i and OE'Q combined give OE' = E' the e.m.f. consumed by the synchronous impedance. Combining OE'i, OE'o, OE gives the nominal generated e.m.f. OEo = EQ, corresponding to the field excitation FQ. In Figs. 56, 57, 58, are shown the diagrams for 6 = 0 or non- inductive load, 6 = 60 degrees lag or inductive load, and & — — 60 degrees or anti-inductive load. Resolving all e.m.fs. into components in phase and in q ...Chapter-Local Concept Hits
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Modern Engineering Reading Prompts
Section titled “Modern Engineering Reading Prompts”- Impedance / reactance: Translate historical opposition terms into modern impedance, admittance, conductance, susceptance, and complex-plane notation.
- Complex quantities: Track how Steinmetz preserves geometric rotation and quadrature while translating the same operation into symbolic form.
- Magnetism: Track flux, reluctance, permeability, magnetizing force, and loss language against modern magnetic-circuit terminology.
- Field language: Read for whether field language is mechanical, geometrical, causal, descriptive, or simply a convenient engineering model.
Ether-Field Interpretive Boundary
Section titled “Ether-Field Interpretive Boundary”- Magnetism: Centrifugal/divergent magnetic-field readings are interpretive overlays, not automatic historical claims.
- 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.
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