Here is the synopsis of our sample research paper on The Production and Use of Three-Phase AC Supplies. Have the paper e-mailed to you 24/7/365.
Essay / Research Paper Abstract
5 pages. This paper gives an overview of the use of the three-phase AC as well as the building and dynamics of the three-phase AC. Mathematical implications are included as well. Bibliography lists 3 sources.
Page Count:
5 pages (~225 words per page)
File: D0_JGA3phac.rtf
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Unformatted sample text from the term paper:
three-phase AC. Mathematical implications are included as well. THREE-PHASE AC According to Dr. Xing M. Wang, Faradays Law states that when a magnet rotates inside a
generator with three coils positioned at 120 degrees from each other then there is generated three-phase alternating currents (3-ph AC) (Wang 2001). However, Wang explains that by Amperes law
if there is a motor with three coils at 120 degrees and input the 3-f AC, there will be a rotating magnetic field. This will then cause an induced
current in the rotor that will then create a torque to rotate the rotor (Wang 2001). What this says is that three phase AC circuits have three independent AC power
sources which have the same amplitude as well as the same frequency. However, their phases are 2*PI/3 apart. In other words, an AC voltage is a rotating vector (its
x-component, vx = v cos(2*Pi*f*t), is what we detect). Then the 3-ph AC source has three rotating vectors, at 120 degrees from each other, and they all rotate at the
same frequency (e.g., 60 Hz in USA). Their sum is always zero (Wang 2001). TWO WAYS TO GET THREE-PHASE POWER The first way is to generate this power
directly. This would be by means of a three-phase alternator. This is the same way power companies produce it. The inherent problem in this is that for
those with no easy access to the electrical grid it takes a large diesel engine to drive the alternator. This method is what is used at construction sites or
in emergencies. Drawbacks to this method include cost, size and weight of the equipment, as well as the fact that the diesel engine must be running all the
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