Chapter 18: Synchronizing Alternators
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Source Metadata
Section titled “Source Metadata”| Field | Value |
|---|---|
| Source | Theory and Calculation of Alternating Current Phenomena |
| Year | 1900 |
| Section ID | theory-calculation-alternating-current-phenomena-1900-chapter-18 |
| Location | lines 17597-18052 |
| Status | candidate |
| Word Count | 1605 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 2 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”CHAPTER XVIII. SYNCHRONIZING ALTERNATORS. 189. All alternators, when brought to synchronism with each other, will operate in parallel more or less satisfactorily. This is due to the reversibility of the alternating-current machine ; that is, its ability to operate as synchronous motor. In consequence thereof, if the driving power of one of sev- eral parallel-operating generators is withdrawn, this gene- rator will keep revolving in synchronism as a synchronous motor ; and the power with which it tends to remain in synchronism is the maximum power which it can furnish as synchronous motor under the conditions of running. 190. The principal and foremost condition of parallel operation of alternators is equality of frequency ; that is, the transmission of power from the prime movers to the alternators must be such as to allow them toSource-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Radiation / light
Section titled “Radiation / light”... as a synchronous motor ; and the power with which it tends to remain in synchronism is the maximum power which it can furnish as synchronous motor under the conditions of running. 190. The principal and foremost condition of parallel operation of alternators is equality of frequency ; that is, the transmission of power from the prime movers to the alternators must be such as to allow them to run at the same frequency without slippage or excessive strains on the belts or transmission devices. Rigid mechanical connection of the alternators cannot be co ...Impedance / reactance
Section titled “Impedance / reactance”... let the voltage at the common bus bars be assumed Fig. 137. as zero line, or real axis of coordinates of the complex representation ; and let — SYNCHRONIZING ALTERNATORS. 315 e = difference of potential at the common bus bars of the two alternators, Z = r — jx = impedance of external circuit, Y = g -\-jb = admittance of external circuit ; hence, the current in external circuit is Let J?i = e-i — je\ = #2 (cos u>1 — j sin £>i) = induced E.M.F. of first machine ; £2 = e.2 — _/>•/ = a2 (cos w2 — j sin w2) = induced E.M.F. of sec- ond ma ...Alternating current
Section titled “Alternating current”CHAPTER XVIII. SYNCHRONIZING ALTERNATORS. 189. All alternators, when brought to synchronism with each other, will operate in parallel more or less satisfactorily. This is due to the reversibility of the alternating-current machine ; that is, its ability to operate as synchronous motor. In consequence thereof, if the driving power of one of sev- eral parallel-operating generat ...Complex quantities
Section titled “Complex quantities”... ternators must be such as to allow them to run at the same frequency without slippage or excessive strains on the belts or transmission devices. Rigid mechanical connection of the alternators cannot be considered as synchronizing ; since it allows no flexibility or phase adjustment between the alternators, but makes them essentially one machine. If connected in parallel, a differ- ence in the field excitation, and thus the induced E.M.F. of the machines, must cause large cross-current ; since it cannot be taken care of by phase adjustment of the m ...Chapter-Local Concept Hits
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| Frequency | 7 | seeded |
| Light | 2 | seeded |
| Ether | 1 | seeded |
Chapter-Local Glossary Hits
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| ether | 1 | seeded |
Equation Candidates
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Figure Candidates
Section titled “Figure Candidates”| Candidate ID | OCR / PDF-Text Candidate | Source Location |
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theory-calculation-alternating-current-phenomena-1900-fig-136 | when operating in series, the coils of the transformer will Fig. 136. be without current. In this case, by interchange of power through the transformers, the series connection w… | line 17731 |
theory-calculation-alternating-current-phenomena-1900-fig-137 | Fig. 137, let the voltage at the common bus bars be assumed Fig. 137. as zero line, or real axis of coordinates of the complex | line 17741 |
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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.
- Impedance / reactance: Translate historical opposition terms into modern impedance, admittance, conductance, susceptance, and complex-plane notation.
- Alternating current: Compare Steinmetz’s AC language with modern sinusoidal steady-state analysis, RMS quantities, phase, and phasor notation.
- Complex quantities: Track how Steinmetz preserves geometric rotation and quadrature while translating the same operation into symbolic form.
- Dielectricity / capacity: Check whether the passage treats capacity, condensers, displacement, or dielectric stress as field storage rather than only circuit algebra.
Ether-Field Interpretive Boundary
Section titled “Ether-Field Interpretive Boundary”- Radiation / light: Radiation and wave language can invite ether-field comparison, but source wording, modern radiation theory, and speculative synthesis must stay separated.
- Dielectricity / capacity: A Wheeler-style reading may emphasize dielectric compression, field stress, and stored potential, but this page treats that as interpretation unless Steinmetz explicitly says it.
Promotion Checklist
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