Propozycje nowych metod wyznaczania sprawności silników indukcyjnych klatkowych

A definition and kinds of efficiency determination methods, models of power flow and selected efficiency determination methods by standards: Japanese JEC, American IEEE 112, International IEC 60034-2 and the latest IEC 61972 and proposition of the newest methods prepared by the author are presented in this work. There are presented distributions of losses in induction squirrel-cage motor applied in particular methods, too. In this work are characterized efficiency determination methods, underlining the differences among them. There are compared the values of efficiency from different methods for the same motor and features of particular methods and presented current world tendency in progress of efficiency determination methods in induction squirrel-cage motors.