Title :
Fitting saturation and hysteresis via arctangent functions
Author :
Pérez-Rojas, Carlos
Author_Institution :
Universidad Michoacana de San Nicolas de Hidalgo, Mexico
fDate :
11/1/2000 12:00:00 AM
Abstract :
In this letter an approach for fitting saturation characteristic and hysteresis using arctangent functions is presented. It has direct application to modeling transformers and electric machines. The approach is based on measurements of the magnetizing curve of the ferromagnetic material. The analytical form of the characteristic can be completely described by only three parameters. These three parameters are enough to take into account: the slope of the linear region, the position of the knee, and the saturating slope. The appropriate selection of these parameters allows the fitting of a wide class of magnetizing characteristics in simulation programs.
Keywords :
curve fitting; electric machines; ferromagnetic materials; machine theory; magnetic hysteresis; magnetisation; transformers; H-H method; apparent rotor resistance; arctangent functions; broken bars detection; broken rotor bar; electric machines modeling; estimated rotor resistance; ferromagnetic material; hysteresis fitting; induction motors broken bars monitoring; knee position; linear region slope; magnetizing curve measurements; on-line broken bars detection; on-line information; reactive power measurement; rotor parameters estimation; saturating slope; saturation conditions; saturation fitting; simulation programs; stator side; temperature conditions; transformers modeling; Automation; Bars; ISO; Induction motors; Magnetic analysis; Magnetic hysteresis; Magnetic materials; Power engineering; Saturation magnetization; Vehicles;
Journal_Title :
Power Engineering Review, IEEE
