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An AC motor is an electric motor driven by an alternating current (AC). The AC motor commonly consists of two basic parts, an outside stator having coils supplied with alternating current to produce a rotating magnetic field , and an inside rotor attached to the output shaft producing a second rotating magnetic field.
Drawing from U.S. patent 381,968, illustrating the principle of Tesla's alternating current induction motor. In late 1886, Tesla met Alfred S. Brown, a Western Union superintendent, and New York attorney Charles Fletcher Peck. [64] The two men were experienced in setting up companies and promoting inventions and patents for financial gain. [65]
Dolivo-Dobrovolsky worked with chained three-phase alternating current and introduced the term three-phase current. The associated asynchronous motor invented by him was the first functional solution. However, the asynchronous motor with squirrel-cage rotor had the problem of delivering only low torque at low speeds, such as when starting up.
Univ.Prof. Dr.Ing. Martin Doppelbauer: The invention of the electric motor, Karlsruhe Institute of Technology - KIT ; The History of Alternating Current ; Brian Bowers, Galileo Ferraris and Alternating Current, IEEE Proc, vol. 89, n.5, May 2001, pp. 790-792 Archived 20 January 2021 at the Wayback Machine
In 1888, alternating current systems gained further viability with the introduction of a functional AC motor, something these systems had lacked up till then. The design, an induction motor , was independently invented by Galileo Ferraris and Nikola Tesla (with Tesla's design being licensed by Westinghouse in the US).
Italian, physicist and engineer; invented the first AC commutatorless induction motor using two-phase AC windings in space quadrature. Delivered a paper on it in April 1888. [3] [4] [9] [23] 1887, M. Borel Constructed a two-phase motor where the rotor is set in rotation by the combined rotating field produced with two sets of coils. [24] 1887 ...
Theory and Calculation of Alternating Current Phenomena (1st ed.). New York: Electrical World and Engineer. OL 7218906M. This book's first edition was expanded and updated in many subsequent editions. Steinmetz (1897). "The Alternating Current Induction Motor". Transactions of the American Institute of Electrical Engineers. XIV (1): 183– 217.
George Westinghouse Jr. (October 6, 1846 – March 12, 1914) was a prolific American inventor, engineer, and entrepreneurial industrialist based in Pittsburgh, Pennsylvania. He is best known for his creation of the railway air brake and for being a pioneer in the development and use of alternating current (AC) electrical power distribution ...