Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Study on Predicting Induction Motor Characteristics of Alternate QD Model Under Light Loads by Comparing Performance of MTPA Control
Authors Chun-Ki Kwon ; Dong-Sik Kim
DOI 10.6113/TKPE/2016.21.1.65
Page pp.65-71
ISSN 1229-2214
Keywords MTPA(Maximum Torque Per Amp) control; Induction motor; Induction motor drives; Light load; Alternate QD
Abstract This study investigates a high-accuracy alternate QD model to estimate the characteristics of induction motor under light loads. To demonstrate the usefulness of the alternate QD model, a maximum torque per amp (MTPA) control based on the alternate model is shown to outperform MTPA control based on the standard QD model. The experimental study conducted in this work exhibits that the MTPA control based on the alternate QD model tracks torque commands between 20 Nm and 30 Nm with 5% error, whereas the MTPA control based on the standard QD model generates torques lower by over 23% compared with the aforementioned torque commands. This result indicates that the alternate QD model is a highly accurate model for induction motors under light loads.