Transcription of AC Electrical Generators - Brown University
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AC Electrical Generators - Brown University
BASIC AC Electrical Generators FREE DOWNLOAD (This page left blank intentionally) BASIC AC Electrical Generators TABLE OF CONTENTS Introduction .. 1 Generator Types .. 4 rotating Armature Generator .. 4 rotating Field 5 Polyphase Generators .. 7 Air Cooled Generators .. 10 Temperature Rise .. 10 11 11 Generator Design and Construction .. 11 Generator Stator and Windings .. 11 Stator Design Hydrogen/Water Cooled Stators .. 17 GENERATOR ROTORS .. 19 Salient Pole Rotors .. 19 Cylindrical Generator Rotor .. 20 Rotor Design Air Cooled 25 Rotor Design Hydrogen/Water Cooled Generators .. 27 Rotor Mechanical Design .. 29 Hydrogen Cooled Generator Stator .. 31 Generator Isolated Phase 33 Standard Generator Seal Oil System .. 35 Standard Generator Stator Cooling Water System .. 43 BASIC AC Electrical Generators Excitation Systems.
The rotating field AC generator as illustrated in Figure 2 is by far the most widely used generator. In this type of generator, direct current from a separate source is passed through windings on the rotor by means of slip rings and brushes. This maintains a rotating electromagnetic field of fixed polarity (similar to a rotating bar magnet). The
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