Sparse Operation of Multi-Winding Transformer in Multiport-Ac-Coupled Converters

Youssef Elasser, Yenan Chen, Ping Wang, Minjie Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The multi-winding transformer in a Multiport-Ac-Coupled (MAC) converter interfaces with a large number of ac-dc ports and processes multi-way power flow. This paper investigates the "sparse operation" of multi-winding transformers, i.e. when only a few windings deliver power and a majority of the windings remain open-circuited. These open-circuited windings induce additional leakage inductance and skin proximity effects in planar magnetics, change the circuit behavior, and increase the losses. By modeling a ten-winding PCB-embeded planar transformer in SPICE, the impact of "sparse operation" on transformer performance is predicted. To verify the theoretical modeling and simulation results, the performance of a 10-winding planar PCB transformer is experimentally compared to the performance of a 10-winding litz wire transformer in a 10-port MAC converter while transferring power from one winding to another. In the planar transformer, it is observed that windings that are physically closer to each other can transfer more power at higher efficiencies than those that are further, while this trend is not present in the litz wire transformer.

Original languageEnglish (US)
Title of host publication2019 IEEE 20th Workshop on Control and Modeling for Power Electronics, COMPEL 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728118420
DOIs
StatePublished - Jun 1 2019
Event20th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2019 - Toronto, Canada
Duration: Jun 17 2019Jun 20 2019

Publication series

Name2019 IEEE 20th Workshop on Control and Modeling for Power Electronics, COMPEL 2019

Conference

Conference20th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2019
CountryCanada
CityToronto
Period6/17/196/20/19

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Energy Engineering and Power Technology
  • Control and Optimization
  • Electrical and Electronic Engineering
  • Modeling and Simulation

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    Elasser, Y., Chen, Y., Wang, P., & Chen, M. (2019). Sparse Operation of Multi-Winding Transformer in Multiport-Ac-Coupled Converters. In 2019 IEEE 20th Workshop on Control and Modeling for Power Electronics, COMPEL 2019 [8769650] (2019 IEEE 20th Workshop on Control and Modeling for Power Electronics, COMPEL 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/COMPEL.2019.8769650