Locality and Direct Extraction of Partial Reluctance K
نویسندگان
چکیده
This paper provides a method to directly extractK element, or partial reluctance from the physical meaning of partial reluctance. The approach of directK extraction reveals the locality nature of partial reluctance and explains why inductance effect can be captured by sparseK matrix without knowing the current loop first. We use a 3-D discretization of a magneto-quasi-static integral formulation to simulate the current distribution and get the frequency dependent partial reluctance matrix K and resistance R. Directly extracting partial reluctance gives a clearer view of partial reluctance’s physical meaning and avoids inverting the partial inductance matrix before running simulation and reduction based on RKC model. Also, benefiting from the locality of the partial reluctance, a hierarchical shielding technique is used in the extraction and it brings a great speed up. The result from examples shows advantages in direct partial reluctance extraction with shielding techniques over the traditional partial reluctance extraction by inverting L.
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