Induction Motor Efficiency Verification Using a Balance-Type Calorimeter Equipped with a Mass Flow Meter

Determination of losses accurately is challenging for today's high-efficiency power electronics and motors. Due to the limitations of the typically used input-output method, other loss measurement methods have been designed. Here, the efficiency of a direct-on-line induction motor prototype is determined using the IEC loss segregation method, the input-output method, and with a balance type calorimeter. The calorimetric results are further analyzed with the help of a mass flow meter that is used to verify the loss results obtained using the balance test.