Simscape file for inductor with eddy currents in core

Simscape file for an inductor with cylindrical conducting core.

Models the impedance of an inductor with a cylindrical conducting magnetic core as described in references [1] and [2] below. Input paremeters L0 and R0, are described in [2], are based on the dimensions and material properties of the cylindrical core. For geometries other than a simple cylindrical core, reasonable values for L0 and R0 may be found from measurements.

This file uses features of Simscape that were first introduced with MATLAB version R2020a. This code was developed and tested using the MathWorks academic license at Penn State University that includes many MATLAB and Simulink toolboxes. However it uses only components that are available in the Simscape Foundation Library. The author believes that a license that includes MATLAB, Simulink and Simscape should be sufficient to use this file.

References
1. John Vandrkooy, "A Model of Loudspeaker Driver Impedance Incorporating
Eddy Currents in the Pole Structure," JAES Volume 37(3) pp. 119-128;
March 1989. http://www.aes.org/e-lib/browse.cfm?elib=6100.
2. Stephen C. Thompson and Daniel M. Warren, "Analog Circuit Model for
Loudspeakers including Eddy Current Behavior and Suitable for Time
Domain Simulation," AES Convention Paper 9826, October 2017,
http://www.aes.org/e-lib/browse.cfm?elib=19223.