抄録
This paper presents a method for identifying equivalent circuit constants for double squirrel-cage induction motors. The proposed strategy is based on a standstill response testing method using a small capacity DC power supply unit, and identifies equivalent circuit constants that accord with the construction of double squirrel-cage induction motors, using characteristics of the rotor-side equivalent circuit constants as inferred from the slot shape of the double squirrel-cage rotor. The proposed method is applied to a 5.5kW-200V-22A-4P-50Hz induction motor with a semi-closed double squirrel-cage rotor. The accuracy and validity of the proposed method are evaluated by comparing the results on starting performance (torque-slip and current-slip characteristics) measured by an on-load test and those predicted by the proposed method.
