Abstract
This paper shows how it is possible to accurately predict power losses in ferromagnetic laminations (in transformer and rotating machine cores) under non-sinusoidal magnetic flux by specifically considering the dependence of hysteresis, classical, and excess loss components (Ph, Pc and Pe) respectively on the magnetic induction derivative (B). Basically, it is assumed through the generalization of experimental and theoretical results under sinusoidal induction, that Ph is proportional to , Pc is proportional to , and Pe, to , where the brackets indicate averaging over the magnetization period. An analytical expression for total power losses under distorted flux is consequently derived. A complete prediction requires only a priori knowledge of one value of Ph and one of Pe determined respectively by means of a quasi-static measurement, and a measurement of total loss in sinusoidal flux at a single test frequency. This paper reports on experiments which concern grain-oriented, non-oriented and amorphous laminations with distortion introduced by a variable amount of the third harmonic flux component. The specific case of trapezoidal induction wave form is also considered.
Citation Formats
Fiorillo, F, and Novikov, A.
Improved approach to power losses in magnetic laminations under non-sinusoidal induction wave form.
Italy: N. p.,
1990.
Web.
Fiorillo, F, & Novikov, A.
Improved approach to power losses in magnetic laminations under non-sinusoidal induction wave form.
Italy.
Fiorillo, F, and Novikov, A.
1990.
"Improved approach to power losses in magnetic laminations under non-sinusoidal induction wave form."
Italy.
@misc{etde_10149980,
title = {Improved approach to power losses in magnetic laminations under non-sinusoidal induction wave form}
author = {Fiorillo, F, and Novikov, A}
abstractNote = {This paper shows how it is possible to accurately predict power losses in ferromagnetic laminations (in transformer and rotating machine cores) under non-sinusoidal magnetic flux by specifically considering the dependence of hysteresis, classical, and excess loss components (Ph, Pc and Pe) respectively on the magnetic induction derivative (B). Basically, it is assumed through the generalization of experimental and theoretical results under sinusoidal induction, that Ph is proportional to , Pc is proportional to , and Pe, to , where the brackets indicate averaging over the magnetization period. An analytical expression for total power losses under distorted flux is consequently derived. A complete prediction requires only a priori knowledge of one value of Ph and one of Pe determined respectively by means of a quasi-static measurement, and a measurement of total loss in sinusoidal flux at a single test frequency. This paper reports on experiments which concern grain-oriented, non-oriented and amorphous laminations with distortion introduced by a variable amount of the third harmonic flux component. The specific case of trapezoidal induction wave form is also considered.}
place = {Italy}
year = {1990}
month = {Sep}
}
title = {Improved approach to power losses in magnetic laminations under non-sinusoidal induction wave form}
author = {Fiorillo, F, and Novikov, A}
abstractNote = {This paper shows how it is possible to accurately predict power losses in ferromagnetic laminations (in transformer and rotating machine cores) under non-sinusoidal magnetic flux by specifically considering the dependence of hysteresis, classical, and excess loss components (Ph, Pc and Pe) respectively on the magnetic induction derivative (B). Basically, it is assumed through the generalization of experimental and theoretical results under sinusoidal induction, that Ph is proportional to , Pc is proportional to , and Pe, to , where the brackets indicate averaging over the magnetization period. An analytical expression for total power losses under distorted flux is consequently derived. A complete prediction requires only a priori knowledge of one value of Ph and one of Pe determined respectively by means of a quasi-static measurement, and a measurement of total loss in sinusoidal flux at a single test frequency. This paper reports on experiments which concern grain-oriented, non-oriented and amorphous laminations with distortion introduced by a variable amount of the third harmonic flux component. The specific case of trapezoidal induction wave form is also considered.}
place = {Italy}
year = {1990}
month = {Sep}
}