Behavioral_Magnetic_Core_LTspice.zip
"Behavioral_Magnetic_Core_LTspice.zip" contains the LTpice implementation of a behavioral magnetic core model targeted for pulsed power applications.
The behavioral magnetic core model was engineered to overcome the limitations of traditional magnetic models, which do not account for the widening of the B-H curve with increasing frequency or fast pulses. This model is tailored for nanocrystalline magnetic cores subjected to pulsed excitations spanning from hundreds of nanoseconds to several microseconds. Nonetheless, the modeling framework is versatile and can be adapted for various time scales and different magnetic materials.
The modeling technique employs an equivalent magnetic circuit for the core, integrating custom behavioral elements to accurately replicate experimentally observed core behavior. The model's B-H curve will widen in response to increasing pulse voltage or magnetization rate, consistent with experimental observations, while maintaining low computation times, typically in the order of seconds. This minimal computational burden facilitates easy scalability to larger systems.
The model requires a DC or low-frequency (60 Hz) B-H curve and a set of empirical constants for a given core size and material. For detailed usage instructions, refer to the included PDF. The accompanying zip file contains examples of the model applied to practical pulsed power systems, with sample input parameters for various nanocrystalline magnetic cores. For more information regarding the model, please refer to the following publication:
K, Kelp, D. Wright, J. Stephens, J. Dickens, J. Mankowski, Z.C Shaw, and A. Neuber, “Modeling Pulsed Magnetic Core Behavior in LTspice,” submitted to Electronics, April 2025, under review.
It is requested that the above publication be referenced should this software package be used or adapted for further refinement.