Apparatus Section 5: Synchronous Converters: Armature Reaction
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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-84 |
| Location | lines 15161-15475 |
| Status | candidate |
| Word Count | 1377 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 0 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”V. Armature Reaction 93. The armature reaction of the polyphase converter is the resultant of the armature reactions of the machine as direct- current generator and as synchronous motor. If the com- mutator brushes are set at right angles to the field poles or without lead or lag, as is usually done in converters, the direct- current armature reaction consists in a polarization in quadra- ture behind the field magnetism. The armature reaction due to the power component of the alternating current in a synchro- nous motor consists of a polarization in quadrature ahead of the field magnetism, which is opposite to the armature reaction as direct-current generator. Let m = total number of turns on the bipolar armature or per pair of poles of an n-phase converter, / = direct current, then the numberSource-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Field language
Section titled “Field language”... ature Reaction 93. The armature reaction of the polyphase converter is the resultant of the armature reactions of the machine as direct- current generator and as synchronous motor. If the com- mutator brushes are set at right angles to the field poles or without lead or lag, as is usually done in converters, the direct- current armature reaction consists in a polarization in quadra- ture behind the field magnetism. The armature reaction due to the power component of the alternating ...Magnetism
Section titled “Magnetism”... onous motor. If the com- mutator brushes are set at right angles to the field poles or without lead or lag, as is usually done in converters, the direct- current armature reaction consists in a polarization in quadra- ture behind the field magnetism. The armature reaction due to the power component of the alternating current in a synchro- nous motor consists of a polarization in quadrature ahead of the field magnetism, which is opposite to the armature reaction as direct-current generato ...Radiation / light
Section titled “Radiation / light”... 2 ir - — )COB(T-— we have that is, the resultant m.m.f. in any direction T has the phase 6 = r, and the intensity, rcFiA/2 ~^~ thus revolves in space with uniform velocity and constant in- tensity, in synchronism with the frequency of the alternating current. 248 ELEMENTS OF ELECTRICAL ENGINEERING Since in the converter, Fl = ^M, TTU we have the resultant m.m.f. of the power component of the alternating current in the n-phase converter. This m.m.f. revolves ...Transients / damping
Section titled “Transients / damping”... intensity, and since it is in quadrature with the field excitation, tends to shift the magnetic flux rapidly across the field poles, and thereby tends to cause sparking and power losses. This oscillating reaction is, however, reduced by the damping effect of the mag- netic field structure. It is somewhat less in the two-circuit single-phase converter. Since in consequence hereof the commutation of the single- phase converter is not as good as that of the polyphase con- verter, in the ...Chapter-Local Concept Hits
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Modern Engineering Reading Prompts
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