Synchronism Concordance

Synchronism

Concordance status: generated from processed OCR/PDF text. Treat these as source-location aids until each passage is checked against the scan.

2261 hits

Total text matches across processed Steinmetz sections.

12 sources

Sources containing at least one matched alias.

163 sections

Chapters, lectures, sections, or report divisions with matches.

Matched Aliases

Synchronism, synchronising, synchronism, synchronizing, synchronous

Source Distribution

Source	Hits	Sections
Theory and Calculation of Electric Apparatus	732	21
Theoretical Elements of Electrical Engineering	408	55
Theory and Calculation of Alternating Current Phenomena	300	21
Investigation of Some Trouble in the Generating System of the Commonwealth Edison Co.	245	4
Theory and Calculation of Alternating Current Phenomena	233	17
Theory and Calculation of Alternating Current Phenomena	135	15
Theory and Calculation of Electric Circuits	96	6
General Lectures on Electrical Engineering	54	9
Theory and Calculation of Transient Electric Phenomena and Oscillations	21	6
Elementary Lectures on Electric Discharges, Waves and Impulses, and Other Transients	16	3
Elementary Lectures on Electric Discharges, Waves and Impulses, and Other Transients	12	2
Engineering Mathematics: A Series of Lectures Delivered at Union College	9	4

Section Hits

Section	Source	Hits	Research review	Location
Chapter 4: Induction Motor With Secondary Excitation	Theory and Calculation of Electric Apparatus	156	Research review	lines 5555-8554
Mathematical Appendix 5: Appendix: Synchronous Operation	Investigation of Some Trouble in the Generating System of the Commonwealth Edison Co.	127	Research review	PDF pages 27-68, lines 2165-5013
Chapter 12: Frequency Converter Or General Alternating Current Transformer	Theory and Calculation of Electric Apparatus	101	Research review	lines 14897-17124
Chapter 24: Synchronous Motor	Theory and Calculation of Alternating Current Phenomena	95	Research review	lines 25682-29374
Chapter 16: Induction Motor	Theory and Calculation of Alternating Current Phenomena	94	Research review	lines 13649-16361
Report Record 4: Record of Four Troubles	Investigation of Some Trouble in the Generating System of the Commonwealth Edison Co.	69	Research review	PDF pages 16-27, lines 1139-2164
Chapter 20: Single-Phase Commutator Motors	Theory and Calculation of Electric Apparatus	68	Research review	lines 23906-30087
Apparatus Section 4: Induction Machines: Induction Generator	Theoretical Elements of Electrical Engineering	53	Research review	lines 21158-21588
Chapter 23: Review	Theory and Calculation of Electric Apparatus	52	Research review	lines 32138-32819
Chapter 19: Synchronous Motor	Theory and Calculation of Alternating Current Phenomena	45	Research review	lines 18053-19457
Chapter 11: Instability Of Circuits: Induction And Syn Chronous Motors	Theory and Calculation of Electric Circuits	42	Research review	lines 21382-22633
Chapter 16: Il	Theory and Calculation of Alternating Current Phenomena	39	Research review	lines 19346-21338
Chapter 2: Multiple Squirrel-Cage Induction Motor	Theory and Calculation of Electric Apparatus	39	Research review	lines 3543-5554
Chapter 19: Alternating- Current Motors In General	Theory and Calculation of Electric Apparatus	37	Research review	lines 21713-23905
Chapter 15: Synchronous Rectifier	Theory and Calculation of Electric Apparatus	36	Research review	lines 18413-19373
Report Section 3: Discussion of Recommendations	Investigation of Some Trouble in the Generating System of the Commonwealth Edison Co.	34	Research review	PDF pages 12-16, lines 721-1138
Chapter 13: Reactance Of Synchronous Machines	Theory and Calculation of Electric Circuits	32	Research review	lines 23466-24022
Chapter 18: Surging Of Synchronous Motors	Theory and Calculation of Electric Apparatus	31	Research review	lines 20975-21712
Chapter 18: Polyphase Induction Motors	Theory and Calculation of Alternating Current Phenomena	29	Research review	lines 17717-20445
Chapter 16: Reaction Machines	Theory and Calculation of Electric Apparatus	29	Research review	lines 19374-20293
Chapter 22: Armature Reactions Of Alternators	Theory and Calculation of Alternating Current Phenomena	28	Research review	lines 23971-25134
Chapter 6: Induction-Motor Regulation And Stability	Theory and Calculation of Electric Apparatus	27	Research review	lines 10583-12397
Chapter 7: Higher Harmonics In Induction Motors	Theory and Calculation of Electric Apparatus	27	Research review	lines 12398-13955
Apparatus Section 8: Induction Machines: Concatenation of Induction Motors	Theoretical Elements of Electrical Engineering	26	Research review	lines 21923-22191
Chapter 15: Induction Motob	Theory and Calculation of Alternating Current Phenomena	26	Research review	lines 14919-17024
Apparatus Section 2: Induction Machines: Polyphase Induction Motor	Theoretical Elements of Electrical Engineering	24	Research review	lines 19166-20427
Chapter 18: Synchronizing Alternators	Theory and Calculation of Alternating Current Phenomena	23	Research review	lines 17597-18052
Chapter 19: Induction Generators	Theory and Calculation of Alternating Current Phenomena	22	Research review	lines 20446-21537
Chapter 23: Synchronizing Alternators	Theory and Calculation of Alternating Current Phenomena	22	Research review	lines 25135-25681
Chapter 24: Conclusion	Theory and Calculation of Electric Apparatus	22	Research review	lines 32820-33531
Chapter 11: Phase Control	Theory and Calculation of Alternating Current Phenomena	21	Research review	lines 9767-10717
Chapter 8: Synchronizing Induction Motors	Theory and Calculation of Electric Apparatus	21	Research review	lines 13956-14465
Chapter 17: Synchbonizino Aiitebkatobs	Theory and Calculation of Alternating Current Phenomena	20	Research review	lines 18829-19345
Chapter 9: Synchronous Induction Motor	Theory and Calculation of Electric Apparatus	20	Research review	lines 14466-14550
Apparatus Section 3: Induction Machines: Single -phase Induction Motor	Theoretical Elements of Electrical Engineering	18	Research review	lines 20428-21157
Apparatus Introduction 21: Introduction	Theoretical Elements of Electrical Engineering	18	Research review	lines 8292-8517
Apparatus Section 8: Synchronous Machines: Characteristic Curves of Synchronous Motor	Theoretical Elements of Electrical Engineering	18	Research review	lines 9399-9553
Apparatus Section 1: Synchronous Converters: General	Theoretical Elements of Electrical Engineering	18	Research review	lines 13189-13795
Lecture 14: Alternating Current Railway Motor	General Lectures on Electrical Engineering	16	Research review	lines 8649-9342
Apparatus Section 7: Synchronous Machines: Synchronous Motor	Theoretical Elements of Electrical Engineering	16	Research review	lines 9292-9398
Chapter 27: Symbolic Representation Of General Alternating Waves	Theory and Calculation of Alternating Current Phenomena	16	Research review	lines 33011-34776
Chapter 24: Symbolic Representation Of General Alternating Waves	Theory and Calculation of Alternating Current Phenomena	16	Research review	lines 22449-23642
Chapter 14: Phase Conversion And Single-Phase Generation	Theory and Calculation of Electric Apparatus	16	Research review	lines 17125-18412
Report Section 2: Recommendations	Investigation of Some Trouble in the Generating System of the Commonwealth Edison Co.	15	Research review	PDF pages 7-12, lines 145-720
Lecture 9: Hunting Of Synchronous Machines	General Lectures on Electrical Engineering	15	Research review	lines 4218-4594
Apparatus Section 7: Induction Machines: Frequency Converter or General Alternating-current Transformer	Theoretical Elements of Electrical Engineering	14	Research review	lines 21813-21922
Apparatus Section 12: Synchronous Machines: Starting of Synchronous Motors	Theoretical Elements of Electrical Engineering	14	Research review	lines 9749-9820
Chapter 37: Quarter-Phase System	Theory and Calculation of Alternating Current Phenomena	14	Research review	lines 38393-40115
Chapter 17: Alternating-Current Generator	Theory and Calculation of Alternating Current Phenomena	14	Research review	lines 16362-17596
Chapter 1: Speed Control Of Induction Motors	Theory and Calculation of Electric Apparatus	14	Research review	lines 1368-3542
Apparatus Section 5: Synchronous Machines: Synchronous Reactance	Theoretical Elements of Electrical Engineering	13	Research review	lines 9035-9169
Apparatus Section 7: Synchronous Converters: Variable Ratio Converters (“split Pole” Converters)	Theoretical Elements of Electrical Engineering	13	Research review	lines 15586-15734
Chapter 16: Aiitebnatingh-Current Osnebator	Theory and Calculation of Alternating Current Phenomena	13	Research review	lines 17025-18828
Chapter 18: Oscillating Currents	Theory and Calculation of Electric Circuits	13	Research review	lines 31657-33200
Apparatus Section 15: Synchronous Machines: Fluctuating Cross Currents in Parallel Operation	Theoretical Elements of Electrical Engineering	12	Research review	lines 9918-10123
Chapter 20: Beactiox Machines	Theory and Calculation of Alternating Current Phenomena	12	Research review	lines 22388-23273
Lecture 4: Single-Energy Transients In Alternating Current Circuits	Elementary Lectures on Electric Discharges, Waves and Impulses, and Other Transients	11	Research review	lines 2485-3386
Lecture 4: Single-Energy Transients In Alternating Current Circuits	Elementary Lectures on Electric Discharges, Waves and Impulses, and Other Transients	11	Research review	lines 2162-2971
Apparatus Section 9: Synchronous Machines: Magnetic Characteristic or Saturation Curve	Theoretical Elements of Electrical Engineering	11	Research review	lines 9554-9650
Apparatus Section 4: Synchronous Converters: Armature Current and Heating	Theoretical Elements of Electrical Engineering	11	Research review	lines 13889-15160
Chapter 21: Alternating-Current Generator	Theory and Calculation of Alternating Current Phenomena	11	Research review	lines 22302-23970
Chapter 21: Reaction Machines	Theory and Calculation of Alternating Current Phenomena	11	Research review	lines 20502-21189
Chapter 10: Hysteresis Motor	Theory and Calculation of Electric Apparatus	11	Research review	lines 14551-14761
Chapter 20: Single-Phase Induction Motors	Theory and Calculation of Alternating Current Phenomena	10	Research review	lines 21538-22301
Apparatus Section 1: Synchronous Machines: General	Theoretical Elements of Electrical Engineering	9	Research review	lines 8518-8657
Chapter 35: Balanced Symmetrical Polyphase Systems	Theory and Calculation of Alternating Current Phenomena	9	Research review	lines 37453-37957
Chapter 15: The General Alternating-Current Transformer Or Frequency Converter	Theory and Calculation of Alternating Current Phenomena	9	Research review	lines 12683-13648
Chapter 17: Inductor Machines	Theory and Calculation of Electric Apparatus	9	Research review	lines 20294-20974
Apparatus Section 13: Synchronous Converters: Direct-current Converter	Theoretical Elements of Electrical Engineering	8	Research review	lines 16065-16540
Chapter 14: The Osni!Raij Aiitebnatina-Cubbent Tbakbfobmsb	Theory and Calculation of Alternating Current Phenomena	8	Research review	lines 14089-14918
Chapter 5: Single-Phase Induction Motor	Theory and Calculation of Electric Apparatus	8	Research review	lines 8555-10582
Chapter 13: Transient Term Of The Rotating Field	Theory and Calculation of Transient Electric Phenomena and Oscillations	8	Research review	lines 13936-14548
Apparatus Section 6: Synchronous Machines: Characteristic Curves of Alternating-current Generator	Theoretical Elements of Electrical Engineering	7	Research review	lines 9170-9291
Apparatus Subsection 80: Direct-current Commutating Machines: C. Commutating Machines 221	Theoretical Elements of Electrical Engineering	7	Research review	lines 13120-13188
Apparatus Section 5: Synchronous Converters: Armature Reaction	Theoretical Elements of Electrical Engineering	7	Research review	lines 15161-15475
Lecture 6: Higher Harmonics Of The Generator Wave	General Lectures on Electrical Engineering	6	Research review	lines 3133-3507
Theory Section 16: Phase Control of Transmission Lines	Theoretical Elements of Electrical Engineering	6	Research review	lines 6222-6813
Apparatus Section 2: Synchronous Machines: Electromotive Forces	Theoretical Elements of Electrical Engineering	6	Research review	lines 8658-8740
Apparatus Section 3: Synchronous Machines: Armature Reaction	Theoretical Elements of Electrical Engineering	6	Research review	lines 8741-8906
Apparatus Section 17: Synchronous Machines: Short-circuit Currents of Alternators	Theoretical Elements of Electrical Engineering	6	Research review	lines 10190-10429
Apparatus Section 6: Synchronous Converters: Reactive Currents and Compounding	Theoretical Elements of Electrical Engineering	6	Research review	lines 15476-15585
Lecture 8: Generation	General Lectures on Electrical Engineering	5	Research review	lines 3781-4217
Apparatus Section 11: Synchronous Machines: Unbalancing of Polyphase Synchronous Machines	Theoretical Elements of Electrical Engineering	5	Research review	lines 9719-9748
Apparatus Section 12: Synchronous Converters: Conclusion	Theoretical Elements of Electrical Engineering	5	Research review	lines 15983-16064
Chapter 11: Rotary Terminal Single-Phase Induction Motor	Theory and Calculation of Electric Apparatus	5	Research review	lines 14762-14896
Lecture 10: Continual And Cumulative Oscillations	Elementary Lectures on Electric Discharges, Waves and Impulses, and Other Transients	4	Research review	lines 6804-8485
Chapter 5: Methods Of Approximation	Engineering Mathematics: A Series of Lectures Delivered at Union College	4	Research review	lines 15156-16482
Lecture 11: Lightning Protection	General Lectures on Electrical Engineering	4	Research review	lines 4931-5294
Apparatus Section 5: Induction Machines: Induction Booster	Theoretical Elements of Electrical Engineering	4	Research review	lines 21589-21646
Apparatus Section 10: Synchronous Machines: Efficiency and Losses	Theoretical Elements of Electrical Engineering	4	Research review	lines 9651-9718
Apparatus Section 16: Synchronous Machines: Higher Frequency Cross Currents Between Synchronous Machines	Theoretical Elements of Electrical Engineering	4	Research review	lines 10124-10189
Apparatus Section 14: Synchronous Converters: Three-wire Generator and Converter	Theoretical Elements of Electrical Engineering	4	Research review	lines 16541-16617
Chapter 10: Resistance And Reactance Of Transmission	Theory and Calculation of Alternating Current Phenomena	4	Research review	lines 6993-9766
Chapter 21: Dibtobtiox Of Wavs-Shafe And Its Causes	Theory and Calculation of Alternating Current Phenomena	4	Research review	lines 23274-24559
Chapter 22: Distortion Of Wave-Shape And Its Causes	Theory and Calculation of Alternating Current Phenomena	4	Research review	lines 21190-21982
Chapter 7: Shaping Of Waves : General	Theory and Calculation of Electric Circuits	4	Research review	lines 12222-12961
Chapter 10: Instability Of Circuits : The Arc	Theory and Calculation of Electric Circuits	4	Research review	lines 17632-21381
Chapter 14: Short-Circuit Currents Of Alternators	Theory and Calculation of Transient Electric Phenomena and Oscillations	4	Research review	lines 14549-15353
Chapter 1: Introduction	Theory and Calculation of Transient Electric Phenomena and Oscillations	4	Research review	lines 15354-15625
Chapter 7: Numerical Calculations	Engineering Mathematics: A Series of Lectures Delivered at Union College	3	Research review	lines 21989-25587
Lecture 10: Regulation And Control	General Lectures on Electrical Engineering	3	Research review	lines 4595-4930
Theory Section 9: Vector Diagrams	Theoretical Elements of Electrical Engineering	3	Research review	lines 2865-3233
Apparatus Section 14: Synchronous Machines: Division of Load in Parallel Operation	Theoretical Elements of Electrical Engineering	3	Research review	lines 9879-9917
Chapter 4: Vector Representation	Theory and Calculation of Alternating Current Phenomena	3	Research review	lines 2149-2759
Chapter 9: Circuits Containing Resistance, Inductive Reactance, And Condensive Reactance	Theory and Calculation of Alternating Current Phenomena	3	Research review	lines 4674-6992
Chapter 16: Power, And Double-Frequency Quantities In	Theory and Calculation of Alternating Current Phenomena	3	Research review	lines 16077-16520
Chapter 25: Distortion Of Wave-Shape And Its Causes	Theory and Calculation of Alternating Current Phenomena	3	Research review	lines 29375-32539
Chapter 8: Capacity	Theory and Calculation of Alternating Current Phenomena	3	Research review	lines 3872-6370
Chapter 8: Circuits Containing Resistance, Inductance, And Capacity	Theory and Calculation of Alternating Current Phenomena	3	Research review	lines 3577-5333
Chapter 20: Commutator Motors	Theory and Calculation of Alternating Current Phenomena	3	Research review	lines 19458-20501
Chapter 21: Regulating Pole Converters	Theory and Calculation of Electric Apparatus	3	Research review	lines 30088-31715
Chapter 2: Long-Distance Transmission Line	Theory and Calculation of Transient Electric Phenomena and Oscillations	3	Research review	lines 19339-21720
Lecture 3: Light And Power Distribution	General Lectures on Electrical Engineering	2	Research review	lines 983-1526
Lecture 17: Arc Lighting	General Lectures on Electrical Engineering	2	Research review	lines 9920-12795
Apparatus Section 1: Induction Machines: General	Theoretical Elements of Electrical Engineering	2	Research review	lines 18949-19165
Apparatus Section 6: Induction Machines: Phase Converter	Theoretical Elements of Electrical Engineering	2	Research review	lines 21647-21812
Apparatus Section 1: Direct-current Commutating Machines: General	Theoretical Elements of Electrical Engineering	2	Research review	lines 10430-10474
Apparatus Subsection 42: Direct-current Commutating Machines: C. Commutating Machines	Theoretical Elements of Electrical Engineering	2	Research review	lines 10586-10645
Apparatus Section 9: Synchronous Converters: Inverted Converters	Theoretical Elements of Electrical Engineering	2	Research review	lines 15735-15810
Apparatus Section 10: Synchronous Converters: Frequency	Theoretical Elements of Electrical Engineering	2	Research review	lines 15811-15892
Apparatus Section 1: Alternating-current Transformer: General	Theoretical Elements of Electrical Engineering	2	Research review	lines 16804-16911
Chapter 28: General Polyphase Systems	Theory and Calculation of Alternating Current Phenomena	2	Research review	lines 34777-34928
Chapter 29: Symmetrical Polyphase Systems	Theory and Calculation of Alternating Current Phenomena	2	Research review	lines 34929-35255
Chapter 11: Fouoault Or Eddy 0Ubbent8	Theory and Calculation of Alternating Current Phenomena	2	Research review	lines 10500-11563
Chapter 19: Commutatob Motobs	Theory and Calculation of Alternating Current Phenomena	2	Research review	lines 21339-22387
Chapter 20: Ri	Theory and Calculation of Alternating Current Phenomena	2	Research review	lines 24560-25119
Chapter 12: Power, And Double Frequency Quantities In General	Theory and Calculation of Alternating Current Phenomena	2	Research review	lines 9381-9740
Chapter 23: Effects Of Higher Harmonics	Theory and Calculation of Alternating Current Phenomena	2	Research review	lines 21983-22448
Chapter 25: General Polyphase Systems	Theory and Calculation of Alternating Current Phenomena	2	Research review	lines 23643-23780
Chapter 26: Symmetrical Polyphase Systems	Theory and Calculation of Alternating Current Phenomena	2	Research review	lines 23781-24053
Lecture 1: Nature And Origin Of Transients	Elementary Lectures on Electric Discharges, Waves and Impulses, and Other Transients	1	Research review	lines 557-1002
Lecture 1: Nature And Origin Of Transients	Elementary Lectures on Electric Discharges, Waves and Impulses, and Other Transients	1	Research review	lines 460-882
Chapter 3: Trigonometric Series	Engineering Mathematics: A Series of Lectures Delivered at Union College	1	Research review	lines 6064-15155
Chapter 6: Empirical Curves	Engineering Mathematics: A Series of Lectures Delivered at Union College	1	Research review	lines 16483-21988
Lecture 12: Electric Railway	General Lectures on Electrical Engineering	1	Research review	lines 5295-7123
Apparatus Section 9: Alternating-current Transformer: Reactors	Theoretical Elements of Electrical Engineering	1	Research review	lines 18813-18948
Theory Section 12: Impedance of Transmission Lines	Theoretical Elements of Electrical Engineering	1	Research review	lines 3761-4464
Theory Section 14: Rectangular Coordinates	Theoretical Elements of Electrical Engineering	1	Research review	lines 5264-5831
Theory Section 17: Impedance and Admittance	Theoretical Elements of Electrical Engineering	1	Research review	lines 6814-7380
Apparatus Section 4: Synchronous Machines: Self-inductance	Theoretical Elements of Electrical Engineering	1	Research review	lines 8907-9034
Apparatus Section 13: Synchronous Machines: Parallel Operation	Theoretical Elements of Electrical Engineering	1	Research review	lines 9821-9878
Apparatus Subsection 45: Direct-current Commutating Machines: C. Commutating Machines 177	Theoretical Elements of Electrical Engineering	1	Research review	lines 10737-10777
Apparatus Section 8: Direct-current Commutating Machines: Armature Reaction	Theoretical Elements of Electrical Engineering	1	Research review	lines 11616-11694
Apparatus Subsection 63: Direct-current Commutating Machines: C. Commutating Machines 197	Theoretical Elements of Electrical Engineering	1	Research review	lines 11795-11863
Apparatus Section 13: Direct-current Commutating Machines: Commutation	Theoretical Elements of Electrical Engineering	1	Research review	lines 11905-11980
Apparatus Subsection 77: Direct-current Commutating Machines: C. Commutating Machines	Theoretical Elements of Electrical Engineering	1	Research review	lines 12929-13007
Apparatus Section 3: Synchronous Converters: Variation of the Ratio of Electromotive Forces	Theoretical Elements of Electrical Engineering	1	Research review	lines 13796-13888
Apparatus Section 11: Synchronous Converters: Double-current Generators	Theoretical Elements of Electrical Engineering	1	Research review	lines 15893-15982
Apparatus Subsection 93: Synchronous Converters: Three-wire Direct-current Generator	Theoretical Elements of Electrical Engineering	1	Research review	lines 16618-16726
Apparatus Subsection 94: Synchronous Converters: Thbee-wire Converter	Theoretical Elements of Electrical Engineering	1	Research review	lines 16727-16803
Chapter 12: Effective Resistance And Reactance	Theory and Calculation of Alternating Current Phenomena	1	Research review	lines 10718-13483
Chapter 26: Effects Of Higher Harmonics	Theory and Calculation of Alternating Current Phenomena	1	Research review	lines 32540-33010
Chapter 32: Transformation Of Polyphase Systems	Theory and Calculation of Alternating Current Phenomena	1	Research review	lines 36062-36514
Chapter 4: Graphic Befrisxintation	Theory and Calculation of Alternating Current Phenomena	1	Research review	lines 2122-2743
Chapter 9: Kbsistanci: And Kbactance Of Transmission Iine8	Theory and Calculation of Alternating Current Phenomena	1	Research review	lines 6371-8268
Chapter 23: Generaii Foiitfhase Ststems	Theory and Calculation of Alternating Current Phenomena	1	Research review	lines 25120-25270
Chapter 24: Symmetbicaii Polyphase Ststems	Theory and Calculation of Alternating Current Phenomena	1	Research review	lines 25271-25604
Chapter 4: Graphic Representation	Theory and Calculation of Alternating Current Phenomena	1	Research review	lines 1743-2321
Chapter 9: Resistance And Reactance Of Transmission Lines	Theory and Calculation of Alternating Current Phenomena	1	Research review	lines 5334-6956
Chapter 11: Foucault Or Eddy Currents	Theory and Calculation of Alternating Current Phenomena	1	Research review	lines 8384-9380
Chapter 16: Load Balance Of Polyphase Systems	Theory and Calculation of Electric Circuits	1	Research review	lines 29302-30428
Chapter 6: Oscillating Currents,	Theory and Calculation of Transient Electric Phenomena and Oscillations	1	Research review	lines 5312-6797
Chapter 9: Inductive Discharges	Theory and Calculation of Transient Electric Phenomena and Oscillations	1	Research review	lines 34897-40349

Representative Source Snippets

Chapter 4: Induction Motor With Secondary Excitation - 156 hit(s)

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CHAPTER IV INDUCTION MOTOR WITH SECONDARY EXCITATION 38. While in the typical synchronous machine and eommu- tating machine the magnetic field is excited by a direct current, characteristic of the induction machine is, that the magnetic field is excited by an alternating current derived from the alter- nating supply voltage, just as in the alt ...

Mathematical Appendix 5: Appendix: Synchronous Operation - 127 hit(s)

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Appendix [[END_PDF_PAGE:27]] [[PDF_PAGE:28]] 22 Report of Charles P. Steinmetz APPENDIX Synchronous Operation A Consider the case of two alternators or groups of alternators such as station sections, which are running in synchronism with each other, that is, have the same frequency f, but are connected together while out of phase with each other by angle 2w ...

Chapter 12: Frequency Converter Or General Alternating Current Transformer - 101 hit(s)

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... primary n r thus, if: / = primary frequency, or frequency of impressed e.m.f., sf = secondary frequency; and the e.m.f. generated per secondary turn by the mutual flux has to the e.m.f. generated per primary turn the ratio, «, s = 0 represents synchronous motion of the secondary; s < 0 represents motion above synchronism — driven by external mechanical power, as will be seen; 8 = 1 represents standstill; s > 1 represents backward motion of the secondary, that is, motion against the mechanical force act ...

Chapter 24: Synchronous Motor - 95 hit(s)

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CHAPTER XXIV SYNCHRONOUS MOTOR 212. In the chapter on synchronizing alternators we have seen that when an alternator running in synchronism is connected with a system of given voltage, the work done by the alternator can be either positive or negative. In the latter case the alt ...

Chapter 16: Induction Motor - 94 hit(s)

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... e frequency as the E.M.Fs. impressed upon the primary, but of a frequency which is the difference between the impressed frequency 238 ALTERNATING-CURRENT PHENOMENA. and the frequency of rotation, or equal to the "slip," that is, the difference between synchronism and speed (in cycles). Hence, if N = frequency of main or primary E.M.F., and s = percentage slip ; sJV = frequency of armature or secondary E.M.F., and (1 — s) N= frequency of rotation of armature. In its reaction upon the primary circuit, however ...

Report Record 4: Record of Four Troubles - 69 hit(s)

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... are no power limiting reactors between Fisk B and North- west Station, and the six tie cables between these stations are of very low resistance, the Northwest Station was just as seriously affected as Fisk B, and indeed acted like a part of Fisk B. b) All the synchronous machines on Fisk Street B, and on North- west Station dropped out, and many synchronous machines on Fisk A and Quarry Street: 44 synchronous machines on Fisk B and 18 on Northwest are recorded as shut down. Of 26 machines on Fisk A, 12 dropped out and 14 stay ...

Chapter 20: Single-Phase Commutator Motors - 68 hit(s)

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... for single-phase railroading, and as con- stant-speed motors or adjustable-speed motors, where efficient acceleration under heavy torque is necessary. As generators, they would be of advantage for the generation of very low fre- quency, since in this case synchronous machines are uneconom- ical, due to their very low speed, resultant from the low frequency. The direction of rotation of a direct-current motor, whether shunt or series motor, remains the same at a reversal of the im- pressed e.m.f., as in this case the ...

Apparatus Section 4: Induction Machines: Induction Generator - 53 hit(s)

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IV. Induction Generator 1. INTRODUCTION 163. In the range of slip from s = 0 to s = 1, that is, from synchronism to standstill, torque, power output, and power input of the induction machine are positive, and the machine thus acts as a motor, as discussed before. Substituting, however, in the equations in paragraph 1 for s values > ...

Chapter 23: Review - 52 hit(s)

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... . Comprises an inductor disk of very many teeth, revolving at very high speed between two radial armatures. Used for producing very high frequencies, from 20,000 to 200,000 cycles per second. Amortisseur. — Squirrel-cage winding in the pole faces of the synchronous machine, proposed by Leblanc to oppose the hunt- ing tendency, and extensively used. Amplifier. — 161. An apparatus to intensify telephone and radio telephone currents. High-frequency inductor alternator excited by the telephone current, usually by armat ...

Chapter 19: Synchronous Motor - 45 hit(s)

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CHAPTER XIX. SYNCHRONOUS MOTOR. 198. In the chapter on synchronizing alternators we have seen that when an alternator running in synchronism is connected with a system of given E.M.F., the work done by the alternator can be either positive or negative. In the latter case the al ...

Chapter 11: Instability Of Circuits: Induction And Syn Chronous Motors - 42 hit(s)

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... zed by the central stations since the early days, and good partial load efficiencies and power-factors secured. 104. The induction motor speed-torque curve thus has on a constant-torque load a stable branch, from the maximum torque point, c. Fig. 102, to synchronism; and an unstable branch, from standstill to the maximum torque point. However, it would be incorrect to ascribe the stability or in- stability to the induction motor-speed curve; but it is the char- acter of the load, the requirement of constant torque, ...

Chapter 16: Il - 39 hit(s)

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CHAPTER XVIil. SYNCHRONOUS MOTOR. 177. In the chapter on synchronizing alternators we have seen that when an alternator running in synchronism is connected with a system of given E.M.F., the work done by the alternator can be either positive or negative. In the latter case the al ...

Chapter 2: Multiple Squirrel-Cage Induction Motor - 39 hit(s)

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... g is high, and the high-resistance squirrel cage thus carries con- siderable current, gives good torque and torque efficiency, while the low-resistance squirrel cage is ineffective, due to its high reactance at the high armature frequency. At speeds near synchronism, the secondary frequency, being that of slip, is low, and the secondary induced voltage correspondingly low. The high-resistance squirrel cage thus carries little current and gives little torque. In the low-resistance squirrel cage, due to its low reactan ...

Chapter 19: Alternating- Current Motors In General - 37 hit(s)

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... s of stator and rotor. In the latter a cycle of rotation exists, and therefrom the tendency of the motor results to lock at a speed giving a definite ratio between the frequency of rotation and the frequency of impressed e.m.f. Such motors, therefore, are synchronous motors. The main types of synchronous motors are as follows: 1. One member supplied with alternating and the other with direct current — polyphase or single-phase synchronous motors, 2. One member excited by alternating current, the other taining a si ...

Chapter 15: Synchronous Rectifier - 36 hit(s)

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CHAPTER XV SYNCHRONOUS RECTIFIER Self-compounding Alternators— Self-starting Synchro- nous Motors — Arc Rectifier — Brush and Thomson Houston Arc Machine — Leblanc Panchahuteur — Permutator — Synchronous Converter 138. Rectifiers ffir converting alternating into direct curr ...

Report Section 3: Discussion of Recommendations - 34 hit(s)

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... e, but in a large part of the system (Fisk Street B and Northwest) the voltage remained practically zero for about a quarter of an hour after the trouble had been cleared. It appears, as the result of the momentary short circuit the stations had broken out of synchronism with each other and were not able to pull back into synchronism, but kept drifting past each other indefinitely, short circuiting each other and thus keeping the voltage down to practically zero. In these very large power systems, it is essential for the safe ...

Chapter 13: Reactance Of Synchronous Machines - 32 hit(s)

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CHAPTER XIII REACTANCE OF SYNCHRONOUS MACHINES 119. The synchronous machine — ^alternating-current generator, synchronous motor or synchronous condenser — consists of an armature containing one or more electric circuits traversed by alternating currents and synchronously revolving relative ...

Chapter 18: Surging Of Synchronous Motors - 31 hit(s)

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CHAPTER XVIII SURGING OF SYNCHRONOUS MOTORS 166. In the theory of the synchronous motor the assumption is made that the mechanical output of the motor equals the power developed by it. This is the case only if the motor runs at constant speed. If, however, it accelerates, the power input is ...