EFFICIENT AND RATIONAL USE OF ELECTRIC ENERGY BY USING MORE ENERGY-EFFICIENT ELECTRIC MOTORS

V diplomski nalogi je predstavljena možnost zniževanja porabe električne energije v industriji z uporabo elektromotorjev z večjo energetsko učinkovitostjo. Prikazana je primerjava med energetsko učinkovitostjo in ceno asinhronskih elektromotorjev različnih razredov učinkovitosti. Zamenjava obstoječih asinhronskih motorjev v industriji z novimi z izboljšano energetsko učinkovitostjo je smiselna samo tam, kjer je prihranek pri zmanjšani porabi električne energije v življenjski dobi elektromotorja tako velik, da se investicija hitro povrne.In the presented diploma work the possibility for reduction of energy consumption in industry by using electric motors with increased energy efficiency is presented. The comparison between energy efficiency and cost of induction electric motors with different efficiency classes is presented. Replacing the existing induction motors in the industry with the new induction motors with improved energy-efficiency is reasonable only there, where reduced consumption of electric energy over the lifetime of the newmotor is high enough that the investment is quickly reimbursed