Development of high frequency spice models for ferrite core inductors and transformers
- Texas Tech Univ., Lubbock, TX (USA). Dept. of Electrical Engineering
In this work high frequency SPICE models were developed to simulate the hysteresis and saturation effects of toroidal shaped ferrite core inductors and transformers. The models include the nonlinear, multi-valued B-H characteristic of the core material, leakage flux, stray capacitances, and core losses. The saturation effects were modeled using two diode clamping arrangements in conjunction with nonlinear dependent sources. Two possible controlling schemes were developed for the saturation switch. One of the arrangements used the current flowing through a series RC branch to control the switch, while the other used a NAND gate. The NAND gate implementation of the switch proved to be simpler and the parameters associated with it were easier to determine from the measurements and the B-H characteristics of the material. Lumped parameters were used to simulate the parasitic effects. Techniques for measuring these parasitic are described. The models were verified using manganese-zinc ferrite-type toroidal cores and they have general applicability to all circuit analysis codes equivalent function blocks such as multipliers, adders, and logic components. 7 refs., 22 figs.
- Research Organization:
- Texas Tech Univ., Lubbock, TX (USA). Dept. of Electrical Engineering
- Sponsoring Organization:
- DOE/DP
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5725088
- Report Number(s):
- SAND-89-1626C; CONF-8910156-1; ON: DE89015121
- Resource Relation:
- Conference: Industry applications conference, San Diego, CA (USA), 1-5 Oct 1989
- Country of Publication:
- United States
- Language:
- English
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99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
FARADAY INDUCTION
COMPUTERIZED SIMULATION
TRANSFORMERS
ELECTRIC FIELDS
FERRITE
HYSTERESIS
MAGNETIC FIELDS
S CODES
ALLOYS
CARBON ADDITIONS
COMPUTER CODES
ELECTRICAL EQUIPMENT
EQUIPMENT
INDUCTION
IRON ALLOYS
SIMULATION
420800* - Engineering- Electronic Circuits & Devices- (-1989)
990220 - Computers
Computerized Models
& Computer Programs- (1987-1989)