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73 relations: AC motor, Allen Kent, Alternating current, Alternator, American Institute of Electrical Engineers, Arago's rotations, Arthur E. Kennelly, Benjamin G. Lamme, Centrifugal force, Charles F. Scott (engineer), Charles Proteus Steinmetz, Circle diagram, Commutator (electric), Complex number, Copper loss, DC motor, Electric current, Electrical impedance, Electrical reactance, Electrical resistance and conductance, Electromagnetic induction, Electromagnetism, Equivalent circuit, François Arago, FS Class E.333, Galileo Ferraris, General Electric Company, George Westinghouse, Hertz, Horsepower, Imaginary number, Induction generator, Leakage inductance, Lenz's law, Linear actuator, Linear induction motor, Liquid metal, Magnetic field, Magnetic flux, Magnetic levitation, Mikhail Dolivo-Dobrovolsky, Nikola Tesla, Ottó Bláthy, Permanent magnet motor, Power electronics, Power factor, Premium efficiency, Radian per second, Reluctance motor, Revolutions per minute, ..., Rotating magnetic field, Rotation (mathematics), Rotor (electric), Routledge, Shaded-pole motor, Silvanus P. Thompson, Skin effect, Squirrel-cage rotor, Stator, Synchronous motor, Thévenin's theorem, Thermistor, Three-phase, Transformer, Two-phase electric power, United States Patent and Trademark Office, Universal motor, Variable refrigerant flow, Variable-frequency drive, Voltage, War of the currents, Windage, Wound rotor motor. Expand index (23 more) »
AC motor
An AC motor is an electric motor driven by an alternating current (AC).
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Allen Kent
Allen Kent (October 24, 1921 – May 1, 2014) was an information scientist.
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Alternating current
Alternating current (AC) is an electric current which periodically reverses direction, in contrast to direct current (DC) which flows only in one direction.
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Alternator
An alternator is an electrical generator that converts mechanical energy to electrical energy in the form of alternating current.
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American Institute of Electrical Engineers
The American Institute of Electrical Engineers (AIEE) was a United States-based organization of electrical engineers that existed from 1884 through 1962.
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Arago's rotations
Arago's rotations is an observable magnetic phenomenon and effect discovered by François Arago in 1824.
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Arthur E. Kennelly
Arthur Edwin Kennelly (December 17, 1861 – June 18, 1939), was an Irish-American electrical engineer.
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Benjamin G. Lamme
Benjamin Garver Lamme (January 12, 1864 – July 8, 1924) was an American electrical engineer and chief engineer at Westinghouse, where he was responsible for the design of electrical power machines.
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Centrifugal force
In Newtonian mechanics, the centrifugal force is an inertial force (also called a "fictitious" or "pseudo" force) directed away from the axis of rotation that appears to act on all objects when viewed in a rotating frame of reference.
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Charles F. Scott (engineer)
Charles Felton Scott (September 19, 1864 in Athens, Ohio – December 17, 1944) was an electrical engineer, professor at Yale University and known for the Scott connection.
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Charles Proteus Steinmetz
Charles Proteus Steinmetz (born Karl August Rudolph Steinmetz, April 9, 1865 – October 26, 1923) was a German-born American mathematician and electrical engineer and professor at Union College.
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Circle diagram
First conceived by A. Heyland in 1894 and B.A. Behrend in 1895, the circle diagram is the graphical representation of the performance of the electrical machine drawn in terms of the locus of the machine's input voltage and current. The circle diagram can be drawn for alternators, synchronous motors, transformers, induction motors. The Heyland diagram is an approximate representation of circle diagram applied to induction motors, which assumes that stator input voltage, rotor resistance and rotor reactance are constant and stator resistance and core loss are zero. Another common circle diagram form is as described in the two constant air-gap induction motor images shown here, where,.
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Commutator (electric)
A commutator is a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit.
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Complex number
A complex number is a number that can be expressed in the form, where and are real numbers, and is a solution of the equation.
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Copper loss
Copper loss is the term often given to heat produced by electrical currents in the conductors of transformer windings, or other electrical devices.
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DC motor
A DC motor is any of a class of rotary electrical machines that converts direct current electrical energy into mechanical energy.
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Electric current
An electric current is a flow of electric charge.
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Electrical impedance
Electrical impedance is the measure of the opposition that a circuit presents to a current when a voltage is applied.
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Electrical reactance
In electrical and electronic systems, reactance is the opposition of a circuit element to a change in current or voltage, due to that element's inductance or capacitance.
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Electrical resistance and conductance
The electrical resistance of an electrical conductor is a measure of the difficulty to pass an electric current through that conductor.
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Electromagnetic induction
Electromagnetic or magnetic induction is the production of an electromotive force (i.e., voltage) across an electrical conductor in a changing magnetic field.
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Electromagnetism
Electromagnetism is a branch of physics involving the study of the electromagnetic force, a type of physical interaction that occurs between electrically charged particles.
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Equivalent circuit
In electrical engineering and science, an equivalent circuit refers to a theoretical circuit that retains all of the electrical characteristics of a given circuit.
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François Arago
Dominique François Jean Arago (Domènec Francesc Joan Aragó), known simply as François Arago (Catalan: Francesc Aragó) (26 February 17862 October 1853), was a French mathematician, physicist, astronomer, freemason, supporter of the carbonari and politician.
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FS Class E.333
FS Class E.333 was a class of electric locomotives of the Ferrovie dello Stato (FS), powered by three-phase alternating current, which were in service from 1923 to 1968.
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Galileo Ferraris
Galileo Ferraris (31 October 1847 – 7 February 1897) was an Italian physicist and electrical engineer, one of the pioneers of AC power system and an inventor of the three-phase induction motor.
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General Electric Company
The General Electric Company, or GEC, was a major UK-based industrial conglomerate involved in consumer and defence electronics, communications, and engineering.
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George Westinghouse
George Westinghouse Jr. (October 6, 1846 – March 12, 1914) was an American entrepreneur and engineer based in Pittsburgh, Pennsylvania who invented the railway air brake and was a pioneer of the electrical industry, gaining his first patent at the age of 19.
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Hertz
The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.
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Horsepower
Horsepower (hp) is a unit of measurement of power (the rate at which work is done).
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Imaginary number
An imaginary number is a complex number that can be written as a real number multiplied by the imaginary unit,j is usually used in Engineering contexts where i has other meanings (such as electrical current) which is defined by its property.
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Induction generator
An induction generator or asynchronous generator is a type of alternating current (AC) electrical generator that uses the principles of induction motors to produce power.
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Leakage inductance
Leakage inductance is that property of an electrical transformer that causes a winding to appear to have some pure inductance in series with the mutually-coupled transformer windings.
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Lenz's law
Lenz's law (pronounced), named after the physicist Heinrich Friedrich Emil Lenz who formulated it in 1834, states that the direction of current induced in a conductor by a changing magnetic field due to induction is such that it creates a magnetic field that opposes the change that produced it.
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Linear actuator
A linear actuator is an actuator that creates motion in a straight line, in contrast to the circular motion of a conventional electric motor.
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Linear induction motor
A linear induction motor (LIM) is an alternating current (AC), asynchronous linear motor that works by the same general principles as other induction motors but is typically designed to directly produce motion in a straight line.
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Liquid metal
Liquid metal consists of alloys with very low melting points which form a eutectic that is liquid at room temperature.
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Magnetic field
A magnetic field is a vector field that describes the magnetic influence of electrical currents and magnetized materials.
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Magnetic flux
In physics, specifically electromagnetism, the magnetic flux (often denoted or) through a surface is the surface integral of the normal component of the magnetic field B passing through that surface.
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Magnetic levitation
Magnetic levitation, maglev, or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields.
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Mikhail Dolivo-Dobrovolsky
Mikhail Osipovich Dolivo-Dobrovolsky (Михаи́л О́сипович Доли́во-Доброво́льский; Michail von Dolivo-Dobrowolsky or Michail Ossipowitsch Doliwo-Dobrowolski; Michał Doliwo-Dobrowolski; &ndash) was a Polish-Russian engineer, electrician, and inventor.
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Nikola Tesla
Nikola Tesla (Никола Тесла; 10 July 1856 – 7 January 1943) was a Serbian-American inventor, electrical engineer, mechanical engineer, physicist, and futurist who is best known for his contributions to the design of the modern alternating current (AC) electricity supply system.
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Ottó Bláthy
Ottó Titusz Bláthy (11 August 1860 – 26 September 1939) was a Hungarian electrical engineer.
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Permanent magnet motor
A permanent magnet motor is a type of brushless electric motor that uses permanent magnets rather than winding in the field.
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Power electronics
Power electronics is the application of solid-state electronics to the control and conversion of electric power.
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Power factor
In electrical engineering, the power factor of an AC electrical power system is defined as the ratio of the real power flowing to the load to the apparent power in the circuit, and is a dimensionless number in the closed interval of −1 to 1.
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Premium efficiency
As part of a concerted effort worldwide to reduce energy consumption, CO2 emissions and the impact of industrial operations on the environment, various regulatory authorities in many countries have introduced, or are planning, legislation to encourage the manufacture and use of higher efficiency motors.
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Radian per second
The radian per second (symbol: rad·s−1 or rad/s) is the SI unit of rotational speed (angular velocity), commonly denoted by the Greek letter ω (omega).
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Reluctance motor
A reluctance motor is a type of electric motor that induces non-permanent magnetic poles on the ferromagnetic rotor.
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Revolutions per minute
Revolutions per minute (abbreviated rpm, RPM, rev/min, r/min) is the number of turns in one minute.
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Rotating magnetic field
A rotating magnetic field is a magnetic field that has moving polarities in which its opposite poles rotate about a central point or axis.
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Rotation (mathematics)
Rotation in mathematics is a concept originating in geometry.
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Rotor (electric)
The rotor is a moving component of an electromagnetic system in the electric motor, electric generator, or alternator.
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Routledge
Routledge is a British multinational publisher.
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Shaded-pole motor
The shaded-pole motor is the original type of AC single-phase induction motor, dating back to at least as early as 1890.
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Silvanus P. Thompson
Silvanus Phillips Thompson (19 June 1851 – 12 June 1916) was a professor of physics at the City and Guilds Technical College in Finsbury, England.
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Skin effect
Skin effect is the tendency of an alternating electric current (AC) to become distributed within a conductor such that the current density is largest near the surface of the conductor, and decreases with greater depths in the conductor.
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Squirrel-cage rotor
A squirrel-cage rotor is the rotating part of the common squirrel-cage induction motor.
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Stator
The stator is the stationary part of a rotary system, found in electric generators, electric motors, sirens, mud motors or biological rotors.
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Synchronous motor
A synchronous electric motor is an AC motor in which, at steady state, the rotation of the shaft is synchronized with the frequency of the supply current; the rotation period is exactly equal to an integral number of AC cycles.
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Thévenin's theorem
As originally stated in terms of DC resistive circuits only, Thévenin's theorem holds that: In circuit theory terms, the theorem allows any one-port network to be reduced to a single voltage source and a single impedance.
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Thermistor
A thermistor is a type of resistor whose resistance is dependent on temperature, more so than in standard resistors.
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Three-phase
In electrical engineering, three-phase electric power systems have at least three conductors carrying alternating current voltages that are offset in time by one-third of the period.
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Transformer
A transformer is a static electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
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Two-phase electric power
Two-phase electrical power was an early 20th-century polyphase alternating current electric power distribution system.
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United States Patent and Trademark Office
The United States Patent and Trademark Office (USPTO) is an agency in the U.S. Department of Commerce that issues patents to inventors and businesses for their inventions, and trademark registration for product and intellectual property identification.
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Universal motor
The universal motor is a type of electric motor that can operate on either AC or DC power.
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Variable refrigerant flow
Variable refrigerant flow (VRF), also known as variable refrigerant volume (VRV), is an HVAC technology invented by Daikin Industries, Ltd.
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Variable-frequency drive
A variable-frequency drive (VFD; also termed adjustable-frequency drive, “variable-voltage/variable-frequency (VVVF) drive”, variable speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.
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Voltage
Voltage, electric potential difference, electric pressure or electric tension (formally denoted or, but more often simply as V or U, for instance in the context of Ohm's or Kirchhoff's circuit laws) is the difference in electric potential between two points.
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War of the currents
The war of the currents (sometimes called battle of the currents) was a series of events surrounding the introduction of competing electric power transmission systems in the late 1880s and early 1890s.
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Windage
Windage is a force created on an object by friction when there is relative movement between air and the object.
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Wound rotor motor
A wound-rotor motor is a type of induction motor where the rotor windings are connected through slip rings to external resistance.
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References
[1] https://en.wikipedia.org/wiki/Induction_motor
