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Finite element analysis modeling of high voltage and frequency 3-phase solid state transformers enabled by metal amorphous nanocomposites

Published online by Cambridge University Press:  11 May 2018

Mst Nazmunnahar ,
Satoru Simizu ,
Paul R. Ohodnicki ,
Subhashis Bhattacharya  and
Michael E. McHenry
Mst Nazmunnahar*
Affiliation:
Materials Science & Engineering Department, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
Satoru Simizu
Affiliation:
Materials Science & Engineering Department, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
Paul R. Ohodnicki
Affiliation:
National Energy Technology Lab (NETL) and Materials Science & Engineering Department, Carnegie Mellon University, Pittsburgh, Pennsylvania 15236, USA
Subhashis Bhattacharya
Affiliation:
Electrical Engineering Department, North Carolina University, Raleigh, North Carolina 27606, USA
Michael E. McHenry
Affiliation:
Materials Science & Engineering Department, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
*
a)Address all correspondence to this author. e-mail: mnazmunn@andrew.cmu.edu
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Abstract

We review the materials paradigm for metal amorphous nanocomposite (MANC) soft magnetic materials to showcase in solid state transformers (SSTs). We report 2D finite element analysis (FEA) of 3-phase SSTs operating at 50 Hz–10 kHz frequencies. We benchmark materials in designs to control high frequency losses and achieve higher power densities. FEA models are solved in the time domain for line frequencies of 50 Hz–10 kHz and 100 KW output power for the first 4 cycles. Transformer topologies are coupled to a power analysis using a Steinmetz parameterization of magnetic losses capturing induction and field scaling for transformer grade Si steel as compared to Metglas, Ferrite, FINEMET, Co- and FeNi-based MANCs. Recently discovered FeNi-based MANCs allow smaller transformers at equivalent power as compared to Si steel, Metglas, and Co-based MANCs. Fe-rich and non-Co containing MANCs also offer economies based on lower raw materials costs compared with Co-based MANCs.

Keywords

SST (solid state transformer)FEA (finite element analysis)MANC (metal amorphous nanocomposite materials)
Type
Article
Information
Journal of Materials Research , Volume 33 , Issue 15: Focus Issue: Soft Magnetic Materials: Synthesis, Characterization, and Applications , 13 August 2018 , pp. 2138 - 2147
Copyright
Copyright © Materials Research Society 2018 

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