Title :
Evaluation of a vector controlled induction motor drive using the dynamic magnetic circuit model
Author :
Gerada, C. ; Bradley, K.J. ; Sumner, M. ; Sewell, P.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nottingham Univ., UK
Abstract :
This paper describes the use of a detailed magnetic computational model of an induction motor to analyse its behaviour under vector control. In particular, the influence of saturation of both the main and leakage flux paths is considered, as is the effect of rotor skew. Simulation and experimental results with a standard vector controller indicate a significant cross coupling effect due to skew, which reduces airgap flux and torque/amp. This could explain why such drives can be difficult to control at rated conditions, on the threshold of field weakening operation.
Keywords :
air gaps; induction motor drives; machine vector control; magnetic circuits; magnetic flux; magnetic leakage; rotors; airgap flux reduction; cross coupling effect; dynamic magnetic circuit model; field weakening operation; leakage flux path; magnetic computational model; main flux path; rotor skew effect; saturation; standard vector controller; torque/amp reduction; vector control; vector controlled induction motor drive; Circuit simulation; Computational modeling; Induction motor drives; Induction motors; Machine vector control; Magnetic analysis; Magnetic circuits; Magnetic flux; Rotors; Saturation magnetization;
Conference_Titel :
Industry Applications Conference, 2003. 38th IAS Annual Meeting. Conference Record of the
Print_ISBN :
0-7803-7883-0
DOI :
10.1109/IAS.2003.1257633
