Title :
Frequency scaling of excess hysteresis losses
Author :
Mayergoyz, I.D. ; Serpico, C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD, USA
fDate :
9/1/2000 12:00:00 AM
Abstract :
The existence of excess hysteresis losses is discussed. It is emphasized that the excess hysteretic losses are caused by some intrinsic nonlinear dynamics underlying bistable (multistable) behavior associated with hysteresis. By using the mathematical formalism of the Preisach model of hysteresis and some known, results on nonlinear bistable dynamics, it is demonstrated that for small frequencies excess hysteretic losses are increased with frequency as ω(2/3). The universality of this result is stressed through numerical experiments
Keywords :
magnetic cores; magnetic hysteresis; magnetic leakage; Preisach model; bistable behavior; core losses; excess hysteresis losses; intrinsic nonlinear dynamics; mathematical formalism; Core loss; Delay; Eddy currents; Energy dissipation; Frequency dependence; Magnetic cores; Magnetic fields; Magnetic flux; Magnetic hysteresis; Mathematical model;
Journal_Title :
Magnetics, IEEE Transactions on
