Sentence examples for per unit system from inspiring English sources
This paper proposes the application of a per unit system to batteries to overcome these problems.
In this per unit system, all magnitudes are represented as non-dimensional values, with reference to a set of base magnitudes.
To apply a per unit system, a set of base magnitudes is studied and defined taking into account the special characteristics of a battery.
The conclusion is that with a per unit system the information extracted is more accessible, direct and representative than using absolute magnitudes.
It is worth the effort to develop a familiarity with the "per unit" system, because it greatly eases conversations with utility engineers, motor designers, transformer designers, and others associated with power electronics and it is universally used.
3. Parameters of a single DFIG-based wind turbine. 1) Per unit system.
This chapter reviews the basic theoretical principles of power engineering, with relevant examples of AC circuit analysis, per-unit systems, three-phase systems, transformer connections, power measurement, and other topics.
The design approaches are extensively verified with simulations and experimental results of a reduced-scale per-unit equivalent system of the 10-ton series-hybrid electric vehicle (SHEV).
Moreover, although price levels of electronics are constantly falling, new generation of radio access technologies with increased performance tend to have the same price level (per unit) as those in the previous systems.
Density is defined by the American Meteorological Society's Glossary of Meteorology as "the ratio of the mass of any substance to the volume occupied by it (usually expressed in kilograms per cubic meter, but any other unit system may be used)...In a continuous medium the density is defined by a limiting process and is a point function". In simplistic terms, it is the mass divided by volume.
The simulations are carried out in per unit (p.u) system with the base kV and MVA as 400 kV and 100MVA respectively.
