Mvoudjo E. Computation methods of discharge lamp-start regulator sets on the basis of novel lamp conductivity approximation forms

Object of study: process in discharge lamp-starter regulator device (DL-SRD) set. Aim: the aim of study is scientifically substantiated methodology of pre-design engineering calculation for DL-SRD sets with low and high pressure lamps and various types of ballasts on the basis of novel approximation forms of lamp conductivity dynamics. Methods: analysis of elementary collision and energy exchange processes in discharge plasma. Application of non-linear circuit equations with AC arc, Lagrange-Eiler variation equations and Fourier series. Results, novelty: on the basis of systemic critical analysis of existing arc discharge VA characteristic equations, including those in low and high pressure DLs, for the first time the factors have been found hampering their direct application to calculation of DL-SRD sets at pre-design studies under limited initial data as regards lamp current and voltage form. The forms of gas discharge plasma conductivity dynamics approximation were analyzed in LPDLs and HPDLs respectively as G=Gosin2?t and G=G'o(?t)n(? - ?t). On the basis of analysis of elementary processes in lamp discharge plasma for the first time a possibility has been shown to define the amplitude value of Go and difficulties connected to its practical realization, a scientific substantiation being given to the second approximation form. Field of application: lighting engineering and light sources.