The academic study of electric machines is the universal study of electric motors and electric generators. By the classic definition, electric machine is synonymous with electric motor or electric generator, all of which are electromechanical energy converters: converting electricity to mechanical power (i.e., electric motor) or mechanical power to electricity (i.e., electric generator). The movement involved in the mechanical power can be rotating or linear.
Although transformers do not contain any moving parts they are also included in the family of electric machines because they utilise electromagnetic phenomena.
Electric machines (i.e., electric motors) consume approximately 60% of all electricity produced. Electric machines (i.e., electric generators) produce virtually all electricity consumed. Electric machines have become so ubiquitous that they are virtually overlooked as an integral component of the entire electricity infrastructure. Developing ever more efficient electric machine technology and influencing their use are crucial to any global conservation, green energy, or alternative energy strategy.
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... called ether, but also the inclusion of electric currents, of the permanent magnetism of steel and lodestone, of magnetic force, and of electrostatic force ... mathematical calculations the oscillatory nature of the electric discharge of a condenser circuit. 1857) who using a rotating concave mirror projected an image of the electric spark upon a sensitive plate, thereby obtaining a photograph of the spark which plainly ...
... Modern high-voltage direct-current (HVDC) electric power transmission systems contrast with the more common alternating-current systems as a means for the efficient bulk transmission of electrical power over ... For example, a 12-pole machine would have 36 coils (10° spacing) ... For example, a 2-pole machine running at 3600 rpm and a 12-pole machine running at 600 rpm produce the same frequency ...
... The electric machine was subsequently improved by Francis Hauksbee, Litzendorf, and by Prof ... Boze was the first to employ the "prime conductor" in such machines, this consisting of an iron rod held in the hand of a person whose body was insulated by standing on a block of resin ... Ingenhousz, during 1746, invented electric machines made of plate glass ...
... Comparing the cost-performance between electric machine systems of different classification or from different manufacturers is difficult without a critical baseline of metrics ... comparison of efficiency, cost, torque, and power between electric machine systems, the comparison should be matched with the same voltage and speed at a given frequency of excitation ... Electronic Controller – unless integrated and included in the specifications of the electric machine system, the electronic controller, which is required for practical system operation, should always ...
Famous quotes containing the words machine and/or electric:
“The momentary charge at Balaklava, in obedience to a blundering command, proving what a perfect machine the soldier is, has, properly enough, been celebrated by a poet laureate; but the steady, and for the most part successful, charge of this man, for some years, against the legions of Slavery, in obedience to an infinitely higher command, is as much more memorable than that as an intelligent and conscientious man is superior to a machine. Do you think that that will go unsung?”
—Henry David Thoreau (1817–1862)
“The sight of a planet through a telescope is worth all the course on astronomy; the shock of the electric spark in the elbow, outvalues all the theories; the taste of the nitrous oxide, the firing of an artificial volcano, are better than volumes of chemistry.”
—Ralph Waldo Emerson (1803–1882)