00602naa#a2200181#i#450# EN\\bibl\69716 20241122161110.5 2073-1574 20230830b2023####ek#y0engy0150####ca RU Comparative analysis of mathematical descriptions and pulse-width modulation methods Journal article Astrakhan Astrakhan State Technical University 2023 7 с. Journal article local Электротехника. 621.3 Gus'kov Vladimir Olegovich Lavin Andrey Viktorovich vestnik.astu.org