Electric machine

Electric machine

The academic study of electric machines is the universal study of electric motors and electric generators. By classic definition, electric machine is synonymous with electric motor or electric generator, which are electro-mechanical energy converters: converting electricity to mechanical power (i.e., electric motor) or mechanical power to electricity (i.e., electric generator). The dynamic movement of the mechanical power can be rotating or linear. Electric machines (i.e., electric motors and electric generators) can be classified as singly-fed electric machines or doubly-fed electric machines, which can be further reduced to asynchronous, synchronous, or reluctance singly-fed or doubly-fed electric machines.

Although transformers do not contain any moving parts they are also included in the family of electric machines because they utilise the electromagnetic phenomena. [Flanagan. Handbook of Transformer Design and Applications, Chap. 1 p1.]

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.

References


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  • electric machine — machine which produces electrical voltage …   English contemporary dictionary

  • Doubly fed electric machine — Doubly fed electric machines are electric motors or electric generators that have windings on both stationary and rotating parts, where both windings transfer significant power between shaft and electrical system. Doubly fed machines are useful… …   Wikipedia

  • Doubly-fed electric machine — Doubly fed electric machines (i.e., electric motors or electric generators) belong to a category of electric machines that incorporate two multiphase winding sets of similar power rating that have independent means of excitation. As a result,… …   Wikipedia

  • Singly-fed electric machine — Singly fed electric machines (i.e., electric motors or electric generators) belong to a category of electric machines that incorporate one multiphase winding set, which is independently excited, actively participates in the energy conversion… …   Wikipedia

  • Magneto-electric machine — Magneto electric Mag net*o e*lec tric, Magneto electrical Mag net*o e*lec tric*al, a. (Physics) Pertaining to, or characterized by, electricity by the action of magnets; as, magneto electric induction. [1913 Webster] {Magneto electric machine}, a …   The Collaborative International Dictionary of English

  • Hydro-electric machine — Hydro electric Hy dro e*lec tric, a. [Hydro , 1 + electric.] Pertaining to, employed in, or produced by, the evolution of electricity by means of a battery in which water or steam is used. [1913 Webster] {Hydro electric machine} (Physics), an… …   The Collaborative International Dictionary of English

  • Electric — E*lec tric ([ e]*l[e^]k tr[i^]k), Electrical E*lec tric*al ([ e]*l[e^]k tr[i^]*kal), a. [L. electrum amber, a mixed metal, Gr. h lektron; akin to hle ktwr the beaming sun, cf. Skr. arc to beam, shine: cf. F. [ e]lectrique. The name came from the… …   The Collaborative International Dictionary of English

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