Finite element modeling of nanoscale-enabled microinductors for power electronics
Source abstract
Abstract
This article focuses on the finite element modeling of toroidal microinductors, employing first-of-its-kind nanocomposite magnetic core material and superparamagnetic iron nanoparticles covalently cross-linked in an epoxy network. Energy loss mechanisms in existing inductor core materials are covered as well as discussions on how this novel core material eliminates them providing a path toward realizing these low form factor devices. Designs for both a 2 µH output and a 500 nH input microinductor are created via the model for a high-performance buck converter. Both modeled inductors have 50 wire turns, less than 1 cm3form factors, less than 1 Ω AC resistance, and quality factors,Q’s, of 27 at 1 MHz. In addition, the output microinductor is calculated to have an average output power of 7 W and a power density of 3.9 kW/in3by modeling with the 1st generation iron nanocomposite core material.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Silicon Carbide Semiconductor Technologies · Metal and Thin Film Mechanics · GaN-based semiconductor devices and materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (36)
Show source-provided references
1. Biglarbegian · 2015 · 247
2. 22. Schneider T.A.H. , Monster J.D. , Madsen M.P. , Knott A. , and Andersen M.A.E. : Optimizing inductor winding geometry for lowest DC-resistance using livelink between COMSOL and MATLAB (2013). Available at: https://www.comsol.com/paper/download/181441/schneider_paper.pdf (accessed April 17, 2018).
3. 10.1557/jmr.2018.13910.1557/jmr.2018.139 ↗
4. 1. Chetvorno: Laminated core eddy currents (2015). Available at: https://commons.wikimedia.org/wiki/File:Laminated_core_eddy_currents.svg (accessed April 17, 2018).
5. 12. MATLAB: Nonlinear inductor: Model inductor with nonideal core (2015). Available at: https://www.mathworks.com/help/physmod/elec/ref/nonlinearinductor.html (accessed April 17, 2018).
6. A study on stray capacitance modeling of inductors by using the finite element method
7. 28. Frei W. : Exploiting symmetry to simplify magnetic field modeling (2014). Available at: https://www.comsol.com/blogs/exploiting-symmetry-simplify-magnetic-field-modeling/ (accessed April 17, 2018).
8. 29. Frei W. : Modeling coils in the AC/DC module (2016). Available at: https://www.comsol.com/blogs/modeling-coils-in-the-acdc-module/ (accessed April 17, 2018).
9. 23. COMSOL: Inductance of a power inductor (2017). Available at: https://www.comsol.com/model/inductance-of-a-power-inductor-1250 (accessed April 17, 2018).
10. 10.1109/TMAG.2012.220192210.1109/TMAG.2012.2201922 ↗
11. Araghchini · 2013
12. Phinney · 2004 · 4527
13. 10.1109/TPEL.2012.219889110.1109/TPEL.2012.2198891 ↗
14. 30. Smith S. : Evaluate your 3D inductor design with COMSOL multiphysics (2016). Available at: https://www.comsol.com/blogs/evaluate-your-3d-inductor-design-with-comsol-multiphysics/ (accessed April 17, 2018).
15. 10.1109/20.80057510.1109/20.800575 ↗
16. 27. Chu P. : Personal communication, COMSOL tech support, 2017. Available at: ping.chu@comsol.com.
17. 25. COMSOL: Modeling a spiral inductor coil (2017). Available at: https://www.comsol.com/model/modeling-a-spiral-inductor-coil-21271 (accessed April 17, 2018).
18. 10.1109/TRANSDUCERS.2011.596969910.1109/TRANSDUCERS.2011.5969699 ↗
19. 21. Mickey J.D.M. , Madsen P. , Knott A. , and Andersen M.A.E. : Design optimization of printed circuit board embedded inductors through genetic algorithms with verification by COMSOL (2013). Available at: https://www.comsol.com/paper/download/181351/madsen_paper.pdf (accessed April 17, 2018).
20. 2. Keeping S. : Design trade-offs when selecting a high-frequency switching regulator (2015). Available at: https://www.digikey.com/en/articles/techzone/2015/feb/design-trade-offs-when-selecting-a-high-frequency-switching-regulator (accessed April 17, 2018).
21. 36. Taylor B.N. and Kuyatt C.E. : Guidelines for evaluating and expressing the uncertainty of NIST measurement results (1994). Available at: https://www.nist.gov/pml/nist-technical-note-1297 (accessed June, 2018).
22. Sullivan · 2007 · 1754
23. 34. COMSOL: COMSOL Multiphysics Reference Manual 5.3. (2017).
24. Taki · 2015 · 176
25. Modeling and analysis of silicon-embedded MEMS toroidal inductors
26. 31. Frei W. : How to choose between boundary conditions for coil modeling (2016). Available at: https://www.comsol.com/blogs/how-to-choose-between-boundary-conditions-for-coil-modeling/ (accessed April 17, 2018).
27. 10.1109/20.71760710.1109/20.717607 ↗
28. Ammouri · 2015 · 1
29. 10.1016/S0304-8853(98)00352-710.1016/S0304-8853(98)00352-7 ↗
30. 24. Pokryvailo A. : Calculation of inductance of sparsely wound toroidal coils (2016). Available at: https://www.comsol.com/paper/download/362301/pokryvailo_paper.pdf (accessed April 17, 2018).
31. 9. Green L. : RF-inductor modeling for the 21st century (2001). Available at: https://m.eet.com/media/1142818/19256-159688.pdf (accessed April 17, 2018).
32. 10.1109/TMTT.2016.264557110.1109/TMTT.2016.2645571 ↗
33. 10.3390/ma708545410.3390/ma7085454 ↗
34. 3. Keeping S. : The inductor’s role in completing a power module-based solution (2011). Available at: https://www.digikey.com/en/articles/techzone/2011/nov/the-inductors-role-in-completing-a-power-modulebased-solution (accessed April 17, 2018).
35. Rozanov · 2004 · 338
36. 10.1109/TPEL.2005.84653710.1109/TPEL.2005.846537 ↗