Matlab Interface For Fast Field Solvers. This is a series of functions and scripts to work with MIT's Fast Field Solvers to automate and help with the use. It has been desisgned with Wireless Power Transfer functionalities in mind.

To use this repository first install Fast Field Solvers Bundle from https://www.fastfieldsolvers.com/download.htm This repository has been tested using MATLAB R2018b.

The added functions for the interface include:

Functions that model the geometries of the inductors.

• Solenoid Spiral: X = solenoid_spiral(N,r0,h,phir,phi0,RES,x0,y0,z0,phix,phiy,phiz,view)
  • Spring with flat turns
• Round Spiral: X = round_spiral(N,r0,d,phi0,RES,x0,y0,z0,phix,phiy,phiz,view)
  • Single layer rounded spiral
• Rectangular Spiral: X = square_spiral(N,A,L,d,x0,y0,z0,phix,phiy,phiz,view)
  • Single layer rectangular spiral
• Rectangular Planar Inductor: X = rectangular_planar_inductor(N,A,L,A0,L0,d,h,x0,y0,z0,phix,phiy,phiz,view)
  • Multilayer rectangular spiral
• Helix Spiral: X = helix_spiral(N,r0,h,phi0,RES,x0,y0,z0,phix,phiy,phiz,view)
  • Helicoidal spring
• Circular Planar Inductor: X = circular_planar_inductor(N,r0,ri,d,phi0,RES,h,x0,y0,z0,phix,phiy,phiz,view)
  • Multilayer circular spiral

Functions that create the data structures and interfaces to work with Fast Field Solvers

• Generate Coil: s=generate_coil(coil_name,X,sigma,w,h,nhinc,nwinc,rh,rw)
  • Generates a struct with the coil geometry and general propierties
• Discretization Tools: [nhinc,nwinc]=optimize_discr(w,h,rh,rw,delta)
  • Calculates a mesh discretization that allows a delta width filament in the edges of the geometry
• FastHenry Creator: file_name=fasthenry_creator(file_name,coils,freq)
  • Creates a .inp file containing all the geometry and conductor data.
• FastHenry Runner: [L,R,Frequency]=fasthenry_runner(file_name,directives,show)
  • Runs the fasthenrymodel and retrives the results
• FastCap Creator: file_name=fastcap2_creator(in_file_name,out_file_name,permitivity, command)
  • Creates a .list and .que files containing the fastcap surfaces
• FastCap Runner: fastcap2_runner(file_name,directives,show)
  • Runs the fastcap model and retrieves the maxwell capacitance matrix

Other Functions and utilities

• Import Bode100: data=import_bode100(filename)
  • Imports data from a csv file generated with bode100 suite
• Generate Model Bode100: model=model_bode100(data,freq_L)
  • Takes data imported from bode100 and generates a model taht matches the data
• Real Coil: [Rs, Ls, fres]=real_coil(L,R,C,f)
  • Takes parameters from a model and calculates the series impedance equivalents
• Import raw LTSpice: raw_data = LTspice2Matlab( filename, varargin )
  • Takes a .raw file from a Spice simulation and imports it as a struct
• Run LTSpice: raw_data=LTautomation(file_name)
  • Runs a .asc LTSpice simulation file
• Modify LTSpice: component_find = LTmodify( file_name, component, value )
  • Looks for a omponent in a .asc file and modifies its value

A Lot still @TODO

• Tipical Planar Geometries
• Tipical Helicoidal Geometries
• Interface with FastHenryV2
• Interface with LTSpice
• Interface with FastCapV2
• Implement Tools for numerical maxwell calculations
• Do a guide
• Only use model and data structs to interface