Title :
A novel equivalent circuit involving stray load loss and harmonic torques for high speed induction motors driven by inverters
Author :
Yamazaki, Katsumi ; Suzuki, Akihiro ; Ohto, Motomichi ; Takakura, Teruyuki ; Nakagawa, Satoshi
Author_Institution :
Dept. of Electr., Electron. & Comput. Eng., Chiba Inst. of Technol., Narashino, Japan
Abstract :
The circuit parameters involving the stray load loss and harmonic torques of high speed induction motors driven by inverters are determined by both finite element analysis and experiments. In the analysis, the parameters are directly determined from the electromagnetic field distribution of the motors under load conditions. On the other hand, in the experiment, the parameters are determined from no-load, locked rotor, and load tests. The characteristics calculated by the proposed circuits are compared with those of the measurement in order to clarify the validity and usefulness of the proposed circuit. It is clarified that the accuracy of the calculated characteristics is significantly improved by the proposed circuit as compared to the conventional circuit, particularly at high speed conditions.
Keywords :
electromagnetic fields; equivalent circuits; finite element analysis; induction motors; invertors; load (electric); torque; electromagnetic field distribution; equivalent circuit parameter; finite element analysis; harmonic torque; high speed induction motor; inverter; load loss; locked rotor; Equivalent circuits; Finite element methods; Harmonic analysis; Induction motors; Loss measurement; Resistance; Rotors; Equivalent circuits; finite element methods; harmonics; induction machines; inverters; losses; magnetic field;
Conference_Titel :
Electric Machines & Drives Conference (IEMDC), 2011 IEEE International
Conference_Location :
Niagara Falls, ON
Print_ISBN :
978-1-4577-0060-6
DOI :
10.1109/IEMDC.2011.5994935