Power Quality
A common measure of the quality of the power produced by an RPC or any phase converter is the voltage balance, which may be measured while the RPC is driving a balanced load such as a three-phase motor. Other quality measures include the harmonic content of the power produced and the power factor of the RPC motor combination as seen by the utility. Selection of the best phase converter for any application depends on the sensitivity of the load to these factors. Three-phase induction motors are very sensitive to voltage imbalances.
The quality of three-phase power generated by such a phase converter depends upon a number of factors including:
- Power capacity of the phase converter (idler horsepower rating).
- Power level demands of the equipment being supplied. For instance, "hard starting" loads such as heavily loaded machinery or well pumps may have higher requirements than other loads rated at the same horsepower.
- Power quality demands of the equipment being supplied (CNC equipment may have more stringent power quality requirements than a welding machine)
- Use of techniques to balance the voltage between the three legs.
Read more about this topic: Rotary Phase Converter, Types
Famous quotes containing the words power and/or quality:
“Suddenly I realized the power I held, the power to rule, to make the world grovel at my feet. We’ll soon put the world right now, Kemp. You and I.”
—R.C. Sherriff (1896–1975)
“The point is, that the function of the novel seems to be changing; it has become an outpost of journalism; we read novels for information about areas of life we don’t know—Nigeria, South Africa, the American army, a coal-mining village, coteries in Chelsea, etc. We read to find out what is going on. One novel in five hundred or a thousand has the quality a novel should have to make it a novel—the quality of philosophy.”
—Doris Lessing (b. 1919)