Effects of temperature, frequency, flux density, and excitation waveform on the core loss and dynamic B-H loops of Supermalloy
- NASA Lewis Research Center, Cleveland, OH (United States)
- Univ. of Pittsburgh, Johnstown, PA (United States)
- NYMA, Inc., Brook Park, OH (United States)
The availability of experimental data which characterize the performance of soft magnetic materials for the combined conditions of temperature and frequency over a wide flux density range for different types of excitation is almost nonexistent. An experimental investigation of an 80-20 Ni-Fe alloy (Supermalloy) was conducted over the temperature (T) range of 23 to 300 C, frequency (f) range of 1 to 50 kHz, and maximum flux densities (B{sub M}) from 0.1 T up to 0.7 T for both sine and square wave voltage excitation. The investigation focused on the effects of B{sub M}, f, T, and excitation waveform on the specific core loss (SCL) and dynamic B-H loops. The results show that the ratio (R) of sine to square wave excitation specific core loss was always greater than unity for a given f and T and identical values of B{sub M}. The values of R ranged from 1.07 to 1.34. The classical theory of core loss separation into a hysteresis and eddy current loss component was used to theoretically determine the lower and upper bounds on R, against which the experimental R-values were compared. The experimental R-values were also used to make a comparison of the core loss of a sine and square wave voltage driven transformer.
- OSTI ID:
- 163358
- Report Number(s):
- CONF-950729-; TRN: IM9604%%463
- Resource Relation:
- Conference: 30. intersociety energy conversion engineering conference, Orlando, FL (United States), 30 Jul - 5 Aug 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the 30. intersociety energy conversion engineering conference. Volume 1; Goswami, D.Y. [ed.] [Univ. of Florida, Gainesville, FL (United States)]; Kannberg, L.D.; Somasundaram, S. [eds.] [Pacific Northwest Lab., Richland, WA (United States)]; Mancini, T.R. [ed.] [Sandia National Labs., Albuquerque, NM (United States)]; PB: 798 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Characterization of soft magnetic material Metglas 2605S-3A for power applications and transformers
High frequency, high temperature specific core loss and dynamic B-H hysteresis loop characteristics of soft magnetic alloys