AC Motors - Revision history

Tyler.anderson: /* Readers: */

2010-01-22T20:42:49Z

Readers:

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	[[Lau, Chris\|Christopher Garrison Lau I]]		[[Lau, Chris\|Christopher Garrison Lau I]]

			Tyler Anderson

Kirkbetz: /* Reviewers: */

2010-01-20T06:10:06Z

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	[[Will Griffith]]		[[Will Griffith]]

			[[Kirk Betz]]

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	[[Lau, Chris\|Christopher Garrison Lau I]]		[[Lau, Chris\|Christopher Garrison Lau I]]

Dr. Ganon: /* Reviewers: */

2010-01-20T05:56:04Z

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	[[Erik Biesenthal]]		[[Erik Biesenthal]]

			[[Will Griffith]]

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	[[Lau, Chris\|Christopher Garrison Lau I]]		[[Lau, Chris\|Christopher Garrison Lau I]]

Dr. Ganon: /* Basic Parts and Principles */

2010-01-20T01:13:34Z

Basic Parts and Principles

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	AC motors consist mainly of a stator and an armature<ref>http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/motorac.html</ref>. The stator is fixed inside the motor. Stators are almost always made using tightly wound wire in order to yield a high magnetic flux density. The second part is the rotor, which rotates to provide movement to whatever application is desired. The rotor can also use wound wire, through which current flows or a permanent magnet. In order to get this current to the rotor without tangling wires around the rotor, metal slip rings are used to complete the circuit<ref>http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/motorac.html</ref>.		AC motors consist mainly of a stator and an armature<ref>http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/motorac.html</ref>. The stator is fixed inside the motor. Stators are almost always made using tightly wound wire in order to yield a high magnetic flux density. The second part is the rotor, which rotates to provide movement to whatever application is desired. The rotor can also use wound wire, through which current flows or a permanent magnet. In order to get this current to the rotor without tangling wires around the rotor, metal slip rings are used to complete the circuit<ref>http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/motorac.html</ref>.

	Magnetic flux is created when current passes through the armature wires. Since the motor uses alternating current, the magnetic field will alternate polarity. Both the stator and rotor produce magnetic fields. The basic interaction between magnetic fields indicates that opposite poles attract while like poles repel. All electric motors use this behavior to produce rotation. When the poles of the stator and rotor are the same, the force will push the two apart. Similarly, the stator and rotor will be pulled together. Motors use both of these simultaneously to impart motion to the rotor, to which the output shaft is attached. This rotation can be used to do useful mechanical work.		Magnetic flux is created when current passes through the armature wires. Since the motor uses alternating current, the magnetic field will alternate the polarity. Both the stator and rotor produce magnetic fields. The basic interaction between magnetic fields indicates that opposite poles attract while like poles repel. All electric motors use this behavior to produce rotation. When the poles of the stator and rotor are the same, the force will push the two apart. Similarly, the stator and rotor will be pulled together. Motors use both of these simultaneously to impart motion to the rotor, to which the output shaft is attached. This rotation can be used to do useful mechanical work.

	==Synchronous AC Motors==		==Synchronous AC Motors==

Cdxskier at 22:26, 19 January 2010

2010-01-19T22:26:17Z

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	== Basic Parts and Principles ==		== Basic Parts and Principles ==

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			[[Lau, Chris\|Christopher Garrison Lau I]]

Timothy.Rasmussen at 00:32, 19 January 2010

2010-01-19T00:32:42Z

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	~~This is an article in progress~~

	== Basic Parts and Principles ==		== Basic Parts and Principles ==

Erik.biesenthal: /* Reviewers: */

2010-01-19T00:09:42Z

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	[[Wesley Brown]]		[[Wesley Brown]]

	[[Erik Biesenthal]]		[[Erik Biesenthal]]

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Erik.biesenthal: /* Reviewers: */

2010-01-19T00:09:28Z

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	[[Wesley Brown]]		[[Wesley Brown]]
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Timothy.Rasmussen: /* Squirrel-Cage Induction Motor */

2010-01-18T02:11:13Z

Squirrel-Cage Induction Motor

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	[[Image:Squirrel-cage-induction-motor.gif\|thumb\|right\|200px\|Squirrel-Cage AC Motor<ref>http://en.wikipedia.org/wiki/File:Induction-motor-3a.gif</ref>]]		[[Image:Squirrel-cage-induction-motor.gif\|thumb\|right\|200px\|Squirrel-Cage AC Motor<ref>http://en.wikipedia.org/wiki/File:Induction-motor-3a.gif</ref>]]
	Squirrel cage motors are commonly used in adjustable-speed applications. The cage has bars of copper or aluminum running the length of the rotor. In most working motors, the bars are skewed from following the axial direction of the motor to reduce noise. The bars are electrically shorted at each end of the rotor by end rings, and thus producing a cage like structure.		Squirrel cage motors are the most common forms of AC induction motors. They are commonly used in adjustable-speed applications. The cage has bars of copper or aluminum running the length of the rotor. In most working motors, the bars are skewed from following the axial direction of the motor to reduce noise. The bars are electrically shorted at each end of the rotor by end rings, and thus producing a cage like structure.

	The stator of an induction motor has three windings which are displaced by 120<sup>o</sup> with respect to each other. <ref>Electric Drives by Ned Mohan</ref>		The stator of an induction motor has three windings which are displaced by 120<sup>o</sup> with respect to each other. <ref>Electric Drives by Ned Mohan</ref>

Timothy.Rasmussen: /* Squirrel-Cage Induction Motor */

2010-01-18T02:10:42Z

Squirrel-Cage Induction Motor

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	[[Image:Stator_Windings.JPG\|300px]]		[[Image:Stator_Windings.JPG\|300px]]

	These stator windings are arranged around the rotor so that when energized with an alternating current they create a rotating magnetic field which sweep past the rotor. The changing magnetic field ~~induced~~ the ~~current~~. The currents interact with the rotating magnetic field and ~~causes~~ a torque on the rotor.<ref>http://en.wikipedia.org/wiki/Induction_motor</ref>		These stator windings are arranged around the rotor so that when energized with an alternating current they create a rotating magnetic field which sweep past the rotor. The changing magnetic field induces a current in the squirrel-cage of the rotor. The currents interact with the rotating magnetic field produced by the stator windings and produces a torque on the rotor.<ref>http://en.wikipedia.org/wiki/Induction_motor</ref>.

	==References:==		==References:==