Modification of a Commutator Motor and Its Operation as a Repulsion Motor (Classic Reprint): Thesis: Thesis (Classic Reprint) - Softcover

Inhaltsangabe

A hands-on look at how brush position reshapes a repulsion motor’s action

The book presents a focused study of a four‑pole repulsion motor and how moving the brushes changes the motor’s internal actions. It explains the interplay between generator and transformer effects as the brush position shifts, using a specially built brush shifter and detailed measurements.

Designed as a thesis, the work documents a practical experiment: a ten‑horse‑power, single‑phase series motor tested at 27‑cycle current. It describes the setup, the method, and the data collected from variations in brush position, current, voltage, and speed. The result is a clear look at how timing and currents produce torque and speed in this type of machine.

• What changes when the brushes move: transformer action, generator action, and the resulting torque and speed behavior.


• How a four-pole arrangement and brush width affect short‑circuiting and current flow in the armature.


• How speed responds to imposed voltage, brush position, and load, with practical test data and observations.


• Notes on practical testing, including a description of the test bench and measurement approach.

Ideal for readers of engineering and motor theory who want a concrete, data‑driven look at repulsion motor behavior and brush shifting.

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