A system for harmonizing four-part chorales in the style of by Ebcioglu K. PDF

By Ebcioglu K.

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The engineer often categorizes the disturbance by the “signature” it leaves on power-quality-measuring instruments. A power signature refers to the wave shape of the power quality disturbance. From the power signature, the power quality engineer can determine the type of power quality problem. After diagnosing the type of power quality problem, the engineer can determine possible sources. The engineer isolates the source of the power quality problem and identifies alternative solutions to the problem.

14 Oscillatory transient plot. ) max. 4) average voltage where average voltage ϭ (sum of voltage of each phase)/3. Most equipment, especially motors, can tolerate a voltage unbalance of 2 percent. A voltage unbalance greater than 2 percent will cause motors and transformers to overheat. This is because a current unbalance in an induction device, like a motor or transformer, varies as the cube of the voltage unbalance applied to the terminals. Potential causes of voltage unbalance include capacitor banks not operating properly, single phasing of equipment, and connecting more single-phase loads on one phase than another.

All rights reserved. Any use is subject to the Terms of Use as given at the website. 14 f ϭ frequency in cycles per second C ϭ capacitance of the power system in farads Capacitors can cause two types of resonance: parallel and series resonance. 28), parallel resonance occurs most often. 12) where XT ϭ total reactance R ϭ resistance XL ϭ inductive reactance ϭ 2␲fL XC ϭ capacitive reactance ϭ 1/(2␲fC) Harmonic resonance occurs when XL ϭ XC and XT becomes a pure resistance (R) and from Ohm’s law (I ϭ V/XT) the harmonic current I reaches a maximum.

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A system for harmonizing four-part chorales in the style of J. S. Bach [PhD Thesis] by Ebcioglu K.


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