Incorporation of Hysteretic Effects in Model-Order Reduction Analysis of Magnetic Devices
Sander, Jonathan J.
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https://hdl.handle.net/2142/11992
Description
Title
Incorporation of Hysteretic Effects in Model-Order Reduction Analysis of Magnetic Devices
Author(s)
Sander, Jonathan J.
Issue Date
2009-06-01T16:07:30Z
Director of Research (if dissertation) or Advisor (if thesis)
Chapman, Patrick L.
Department of Study
Electrical and Computer Engineering
Discipline
Electrical and Computer Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
hysteresis
model reduction
Magnetic equivalent circuit (MEC)
Abstract
The ability to predict the properties of magnetic materials in a device is essential to
ensuring the correct operation and optimization of the design as well as the device
behavior over a wide range of input frequencies. Typically, development and
simulation of wide-bandwidth models requires detailed, physics-based simulations
that utilize significant computational resources. Balancing the trade-offs between
model computational overhead and accuracy can be cumbersome, especially when the
nonlinear effects of saturation and hysteresis are included in the model.
This study focuses on the development of a system for analyzing magnetic devices
in cases where model accuracy and computational intensity must be carefully and
easily balanced by the engineer. A method for adjusting model complexity and
corresponding level of detail while incorporating the nonlinear effects of hysteresis is
presented that builds upon recent work in loss analysis and magnetic equivalent circuit
(MEC) modeling. The approach utilizes MEC models in conjunction with
linearization and model-order reduction techniques to process magnetic devices based
on geometry and core type. The validity of steady-state permeability approximations
is also discussed.
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