PRINCIPLES, CHARACTERISTICS, AND MANAGEMENT OF DC GENERATORS (DYNAMOS)


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PRINCIPLES, CHARACTERISTICS, AND MANAGEMENT OF DC GENERATORS (DYNAMOS)
PRINCIPLES, CHARACTERISTICS, AND MANAGEMENT OF DC GENERATORS (DYNAMOS)1. Direct-current generators impress on the line a direct or continuous emf, one that is always in the same direction. Commercial dc generators have commutators, which distinguish them from ac generators. The function of a commutator and the elementary ideas of generation of emf and commutation are discussed in Div. 1. Additional information about commutation as applied to dc motors, which in general is true for dc generators, is given below.2. Excitation of generator fields. To generate an emf, conductors must cut a magnetic field which in commercial machines must be relatively strong. A perman…
Citation
Terrell Croft; Frederic P. Hartwell; Wilford I. Summers: American Electricians' Handbook, Sixteenth Edition. PRINCIPLES, CHARACTERISTICS, AND MANAGEMENT OF DC GENERATORS (DYNAMOS), Chapter (McGraw-Hill Professional, 2013), AccessEngineering Export