NDLI: Modern development in single-phase generators

Content Provider	IEEE Xplore Digital Library
Author	Waters, W. L.
Copyright Year	1905
Description	The single-phase alternator has been in comrrtercial use now for twenty years and it may seem surprising that there should be new developments at this late date. However, single-phase alternators have been used in the past almost exclusively for lighting work, and in units of comparatively small output and low speed. Recently, on account of the adoption of single-phase current for traction work, an important demand has arisen for large high-speed, low-frequency, single-phase generators. It is in the design and manufacture of such units that the engineer has had to overcome new difficulties. In large, high-speed, single-phase generators for 15 and 25 cycles the difficulties met with are due almost entirely to the large pole-pitch and high armature reaction which it is necessary to adopt. A 500-kw., 60-cycle, 72-pole, single-phase generator would have a pole-pitch of about 7 in., while a 6000-kw., 15-cycle, 2-pole machine would have one machine of about 120 in. It is easily seen that the design of these will be radically different.
Starting Page	579
Ending Page	586
Page Count	8
File Size	1723120
File Format	PDF
ISSN	00972444
Volume Number	27
Issue Number	5
Language	English
Publisher	American Institute of Electrical Engineers
Publisher Date	1908-01-01
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Generators Armature Magnetic hysteresis Magnetic flux Magnetic circuits Shock absorbers Magnetomechanical effects
Content Type	Text
Resource Type	Article

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