General Electric Review Volume 2

General Electric Review Volume 2

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 edition. Excerpt: ...of motor. Repulsion Induction Motors, Type RI This motor, Fig. 37, consists of a singlephase distributed stator winding, and in addition a small auxiliary winding called the compensating winding, consisting of a few coils wound with a small pitch and located in the center of the poles. The armature is substantially a direct-current armature, short-circuited along one axis by a set of brushes called the energy brushes and excited along an axis at right angles to the energy circuit by the compensating winding. The theory of operation will best be understood by considering the elements whose combined action results in the performance of the repulsion induction motor. These elements are: The Repulsion Motor. The Commutator Induction Motor. The Compensated Commutator Induction Motor. The Repulsion Motor. Fig. 38 represents diagrammatically a bipolar repulsion motor. The primary member F is shown as a simple gramme ring. The secondary member A is provided with a winding connected to the segments of a commutator on which one set of brushes 3-4 is short-circuited upon itself and displaced by the angle a from the magnetic axis. In the working diagram, Fig. 39, the primary and secondary windings are shown as circles F and A. L and L represent the primary terminals. The dotted lined c-d and e-f are drawn through the brushes 3 and 4 respectively. Assume that the armature is at rest and current is applied to the primary winding F and in the direction as represented by the arrow. Due to the transformer action a current will flow in the secondary winding in an opposite direction, as indicated by the arrow h. The field produced by the total ampere-turns of the primary winding F is in the direction of the primary terminals L-L, while only a portion of the...
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Product details

  • Paperback | 568 pages
  • 189 x 246 x 29mm | 1,002g
  • United States
  • English
  • black & white illustrations
  • 1236780590
  • 9781236780591