Apparatus Section 6: Induction Machines: Phase Converter
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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-112 |
| Location | lines 21647-21812 |
| Status | candidate |
| Word Count | 948 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 0 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”VI. Phase Converter 158. It may be seen from the preceding that the induction machine can operate equally well as motor, below synchronism, and as generator, above synchronism. In the single-phase induction machine the motor or generator action occurs in one primary circuit only, but in the direction in quadrature to the primary circuit there is a mere magnetizing current either in the secondary, in the single-phase motor proper, or in an auxiliary field-circuit, in the monocyclic motor. The motor and generator action can occur, however, simul- taneously in the same machine, some of the primary circuits acting as motor, others as generator circuits. Thus, if one of the two circuits of a quarter-phase induction machine is con- nected to a single-phase system, in the second circuit an e.m.f. is generated in quadrature with andSource-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Magnetism
Section titled “Magnetism”... polyphase exciting admittance, ZQ = TQ -f- JXQ = self -inductive impedance per primary or ter- tiary circuit, Zi = ri + jxi = resultant single-phase self-inductive impe- dance of secondary circuits. Let e = e.m.f. generated by the mutual flux and Z = r + jx = impedance of the external circuit supplied by the phase converter as generator of second phase. We then have /> I = 71? — current of second phase produced by phase Zr T Z»o converter, E — IZ = „ . „ = ...Dielectricity / capacity
Section titled “Dielectricity / capacity”... onverter its slip increases, but less than with the same load as mechanical output from the machine as induction motor. An application of the phase converter is made in single-phase motors by closing the tertiary or generator circuit by a condenser of suitable capacity, thereby generating the exciting current of the motor in the tertiary circuit. The primary circuit is thereby relieved of the exciting current of the motor, the efficiency essentially increased, and the power- factor of ...Impedance / reactance
Section titled “Impedance / reactance”... tor circuit to the secondary or armature, and from the secondary to the ter- tiary or generator circuit. Thus, in a quarter-phase motor connected to single-phase mains with one of its circuits, if Y = g — jb = primary polyphase exciting admittance, ZQ = TQ -f- JXQ = self -inductive impedance per primary or ter- tiary circuit, Zi = ri + jxi = resultant single-phase self-inductive impe- dance of secondary circuits. Let e = e.m.f. generated by the mutual flux and Z = r + jx = im ...Field language
Section titled “Field language”... the motor or generator action occurs in one primary circuit only, but in the direction in quadrature to the primary circuit there is a mere magnetizing current either in the secondary, in the single-phase motor proper, or in an auxiliary field-circuit, in the monocyclic motor. The motor and generator action can occur, however, simul- taneously in the same machine, some of the primary circuits acting as motor, others as generator circuits. Thus, if one of the two circuits of a qu ...Chapter-Local Concept Hits
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Modern Engineering Reading Prompts
Section titled “Modern Engineering Reading Prompts”- Magnetism: Track flux, reluctance, permeability, magnetizing force, and loss language against modern magnetic-circuit terminology.
- Dielectricity / capacity: Check whether the passage treats capacity, condensers, displacement, or dielectric stress as field storage rather than only circuit algebra.
- Impedance / reactance: Translate historical opposition terms into modern impedance, admittance, conductance, susceptance, and complex-plane notation.
- Field language: Read for whether field language is mechanical, geometrical, causal, descriptive, or simply a convenient engineering model.
- Waves / transmission lines: Map Steinmetz’s wave and line language onto modern distributed constants, propagation velocity, standing waves, and reflections.
Ether-Field Interpretive Boundary
Section titled “Ether-Field Interpretive Boundary”- Magnetism: Centrifugal/divergent magnetic-field readings are interpretive overlays, not automatic historical claims.
- 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.
- 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.
- Waves / transmission lines: Standing/traveling wave passages may support richer field interpretations; the page keeps those readings separate from verified Steinmetz wording.
Promotion Checklist
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