Open AccessUse of logarithmic sensitivity in power system analysis: the example of lighting circuits (hot filament, LED and fluorescent lamp circuits)
Author(s) -
Gluskin Emanuel,
Tsirbas Elias,
Kateri Ifigenia,
Topalis Frangiskos V.
Publication year - 2013
Publication title -
iet science, measurement and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.418
H-Index - 49
eISSN - 1751-8830
pISSN - 1751-8822
DOI - 10.1049/iet-smt.2012.0124
Subject(s) - sensitivity (control systems) , electronic circuit , fluorescent lamp , protein filament , fluorescence , optoelectronics , electrical engineering , physics , materials science , optics , electronic engineering , engineering , composite material
Logarithmic sensitivity characteristics were widely employed by Ch. P. Steinmetz in his classical studies of magnetic systems. In the present case, the authors deal with power sensitivity, K ( U ) = (d P / P )/(d U / U ), where U is the amplitude (scaling factor) of the applied voltage and P is the averaged power. That such characterisation can be suitable for non‐linear power systems is demonstrated for lighting systems: incandescent lamp circuits (i.e. the hot filament), LEDs and fluorescent lamp (FL) circuits. For FL circuits, the problem of minimisation of K ( U ) is shown to be practically and methodologically very important. On the pedagogical regard, the opinion is expressed that the described use of K ( U ) should be taught in basic courses of circuit theory and power systems.