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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.
Alternating current is the form in which electric power is delivered to businesses and residences, ... A low frequency eases the design of electric motors, ...
An induction motor or asynchronous motor is an AC electric motor in which the electric current in the rotor that produces torque is obtained by electromagnetic induction from the magnetic field of the stator winding. [1] An induction motor therefore needs no electrical connections to the rotor.
Electric motors can be powered by direct current (DC) sources, such as from batteries or rectifiers, or by alternating current (AC) sources, such as a power grid, inverters or electrical generators. Electric motors may be classified by considerations such as power source type, construction, application and type of motion output.
U.S. patent 487,796 - System of Electrical Transmission of Power - 1892 December 13 - Alternating current generator consisting of independent armature-circuits formed by conductors alternately disposed; Currents developed differ in phase and the field magnet poles in excess of the number of armature-circuits; Motor having independent energizing circuits connected to the armature-circuit of the ...
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.