Apparatus Section 11: Synchronous Converters: Double-current Generators
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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-89 |
| Location | lines 15893-15982 |
| Status | candidate |
| Word Count | 727 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 0 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”XI. Double-current Generators 102. Similar in appearance to the converter, which changes from alternating to direct current, and to the inverted converter, which changes from direct to alternating current, is the double- current generator; that is, a machine driven by mechanical power and producing direct current as well as alternating current from the same armature, which is connected to commutator and col- lector rings in the same way as in the converter. Obviously the use of the double-current generator is limited to those sizes and speeds at which a good direct-current generator can be built with the same number of poles as a good alternator, that is, low- frequency machines of large output and relatively high speed; while high-frequency low-speed double-current generators are undesirable. The essential difference between double-current generator and converter is, however, thatSource-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Field language
Section titled “Field language”... not in opposition as in the latter, but in the same direction, and the resultant armature polarization thus the sum of the armature polarization of the direct current and of the alternating current. Since at the same output and the same field strength the arma- ture polarization of the direct current and that of the alternating current are the same, it follows that the resultant armature polari- zation of the double-current generator is proportional to the load regardless of the p ...Alternating current
Section titled “Alternating current”... e-current Generators 102. Similar in appearance to the converter, which changes from alternating to direct current, and to the inverted converter, which changes from direct to alternating current, is the double- current generator; that is, a machine driven by mechanical power and producing direct current as well as alternating current from the same armature, which is connected to commutator and col- lector rings in the same way as in the converter. Obviously the use of the double-cur ...Radiation / light
Section titled “Radiation / light”... same way as in the converter. Obviously the use of the double-current generator is limited to those sizes and speeds at which a good direct-current generator can be built with the same number of poles as a good alternator, that is, low- frequency machines of large output and relatively high speed; while high-frequency low-speed double-current generators are undesirable. The essential difference between double-current generator and converter is, however, that in the former the direct curre ...Dielectricity / capacity
Section titled “Dielectricity / capacity”... of the continuous-current armature polarization is thus shifted against the neutral by the same angle as the brushes. The direction of the alternating-current armature polarization, however, is shifted against the neutral by the angle of phase displacement of the alternating current. In consequence thereof, the reactions upon the field of the two parts of the armature polari- zation, that due to the continuous current and that due to the alternating current, are usually different. The reaction ...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.
- Alternating current: Compare Steinmetz’s AC language with modern sinusoidal steady-state analysis, RMS quantities, phase, and phasor notation.
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Ether-Field Interpretive Boundary
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