Alternating Current Traction: Thesis for the Degree of Bachelor of Science in Electrical Engineering (Classic Reprint)

Angebote / Angebote:

Excerpt from Alternating Current Traction: Thesis for the Degree of Bachelor of Science in Electrical EngineeringEvidently, for long distance work, excessive line loss must be avoided somehow, and, since transformers may be used with alternating, but not direct currents, and the line voltage stepped up at the power house and stepped down again at points along the line, traction engineers have turned to alternating currents. The scheme generally used until recently, is that of transforming high tension transmission current-down to lower voltage at substations, and then converting it through rotary converters and feeding it to the trolley as 500 volt direct current.However, the rotary substation represents high initial and high maintenance cost, and furnishes innumerable chances for trouble. The only final solution to the whole trouble seems to be that of supplying current at high line pressures directly to the car, and this demands the use of alternating current motors.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.