A Transformer Flux Balancing Scheme Based on Magnetizing Current Harmonic in Dual-Active-Bridge Converters

Gao, Zihan; Yao, Penfei; Li, Haiguo; Ji, Shiqi; Yang, Zhe; Wang, Fred; Ma, Yiwei

doi:10.1109/apec42165.2021.9487210

A Transformer Flux Balancing Scheme Based on Magnetizing Current Harmonic in Dual-Active-Bridge Converters

Conference · 14 June 2021 · 2021 IEEE Applied Power Electronics Conference and Exposition (APEC)

DOI:https://doi.org/10.1109/apec42165.2021.9487210· OSTI ID:1974592

Gao, Zihan; Yao, Penfei; Li, Haiguo; Ji, Shiqi; Yang, Zhe; Wang, Fred; Ma, Yiwei

The Dual-Active-Bridge (DAB) converter transformer flux unbalance, or dc bias, could be a critical issue due to the mismatches of converter circuit parameters and control transients. In this paper, a steady-state flux balancing scheme, based on the second-order harmonic of magnetizing current has been proposed. The relationship between steady-state flux/magnetizing current unbalance and its harmonic contents has been analyzed, with which a new current sensing method and control strategy are introduced. The proposed magnetizing current sensing method can be implemented for both unity and complicated fractional turns ratios, without high sensitivity to dc offset from the analog circuitry. The proposed scheme has been validated with experimental results on 850-V/850-V DAB converters within a system, as well as in an 850-V/6700-V medium voltage DAB unit.

View Conference

Research Organization:: Univ. of Tennessee, Knoxville, TN (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: EE0008410

OSTI ID:: 1974592

Report Number(s):: DOE-UTK-08410-3

Journal Information:: 2021 IEEE Applied Power Electronics Conference and Exposition (APEC), Conference: 2021 IEEE Applied Power Electronics Conference and Exposition (APEC), Phoenix, AZ, USA, 2021

Country of Publication:: United States

Language:: English

References (19)

Second-Harmonic Current Reduction for Two-Stage Inverter With Boost-Derived Front-End Converter: Control Schemes and Design Considerations No authors listed IEEE Transactions on Power Electronics https://doi.org/10.1109/TPEL.2017.2746878		July 2018
Design Optimization of Medium-Frequency Transformer for DAB Converters With DC Bias Capacity No authors listed IEEE Journal of Emerging and Selected Topics in Power Electronics https://doi.org/10.1109/JESTPE.2020.3010155		August 2021
Inherent volt-second balancing of magnetic devices in zero-voltage switched power converters No authors listed 2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC) https://doi.org/10.1109/APEC.2013.6520178		March 2013
Application of the magnetic ear for flux balancing of a 160kW/20kHz DC-DC converter transformer No authors listed 2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC) https://doi.org/10.1109/APEC.2013.6520588		March 2013
Novel transformer-flux-balancing control of dual-active-bridge bidirectional converters No authors listed 2015 IEEE Applied Power Electronics Conference and Exposition (APEC) https://doi.org/10.1109/APEC.2015.7104330		March 2015
Transient DC Bias and Current Impact Effects of High-Frequency-Isolated Bidirectional DC–DC Converter in Practice No authors listed IEEE Transactions on Power Electronics https://doi.org/10.1109/TPEL.2015.2445831		April 2016
A Prediction Method of DC Bias for DC-DC Dual-active-bridge Converter with MOSFETs No authors listed 2019 14th IEEE Conference on Industrial Electronics and Applications (ICIEA) https://doi.org/10.1109/ICIEA.2019.8833795		June 2019
DC Bias Study for DC-DC Dual-Active-Bridge Converter No authors listed 2018 IEEE 4th Southern Power Electronics Conference (SPEC) https://doi.org/10.1109/SPEC.2018.8636040		December 2018
Prediction Method of DC Bias in DC-DC Dual-Active-Bridge Converter No authors listed CPSS Transactions on Power Electronics and Applications https://doi.org/10.24295/CPSSTPEA.2019.00015		June 2019
A sensor for balancing flux in converters with a high-frequency transformer link No authors listed IEEE Transactions on Industry Applications https://doi.org/10.1109/28.585868		January 1997
Transformer-flux-balancing control in isolated bidirectional DC-DC converters No authors listed 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014 https://doi.org/10.1109/APEC.2014.6803288		March 2014
Closed-Loop Control of DC–DC Dual-Active-Bridge Converters Driving Single-Phase Inverters No authors listed IEEE Transactions on Power Electronics https://doi.org/10.1109/TPEL.2013.2257859		February 2014
A control scheme of three phase solid state transformer for PV generation based on improved voltage-tracking method of DC links No authors listed 2017 IEEE Applied Power Electronics Conference and Exposition (APEC) https://doi.org/10.1109/APEC.2017.7930736		March 2017
Enhancing Inherent Flux Balancing in a Dual-Active Bridge Using Adaptive Modulation No authors listed 2019 IEEE Applied Power Electronics Conference and Exposition (APEC) https://doi.org/10.1109/APEC.2019.8722054		March 2019
Flux Balancing Control of Ungapped Nanocrystalline Core-Based Transformer in Dual Active Bridge Converters No authors listed IEEE Transactions on Power Electronics https://doi.org/10.1109/TPEL.2020.2984789		November 2020
Method to control flux balancing of high‐frequency transformers in dual active bridge dc–dc converters No authors listed The Journal of Engineering https://doi.org/10.1049/joe.2018.8338		November 2018
Flux Balancing of Isolation Transformers and Application of “The Magnetic Ear” for Closed-Loop Volt–Second Compensation No authors listed IEEE Transactions on Power Electronics https://doi.org/10.1109/TPEL.2013.2294551		August 2014
Novel Principle for Flux Sensing in the Application of a DC + AC Current Sensor No authors listed IEEE Transactions on Industry Applications https://doi.org/10.1109/TIA.2015.2434875		September 2015
Overview of Dual-Active-Bridge Isolated Bidirectional DC–DC Converter for High-Frequency-Link Power-Conversion System No authors listed IEEE Transactions on Power Electronics https://doi.org/10.1109/TPEL.2013.2289913		August 2014

Similar Records

A Flux Balancing Strategy for 10-kV SiC-Based Dual-Active-Bridge Converter

Conference · 2022 · 2022 IEEE 9th Workshop on Wide Bandgap Power Devices & Applications (WiPDA) · OSTI ID:1974596

Gao, Zihan; Yao, Pengfei; Li, Haiguo; +1 more

Flux Balancing Control of Ungapped Nanocrystalline Core-Based Transformer in Dual Active Bridge Converters

Journal Article · 2020 · IEEE Transactions on Power Electronics · OSTI ID:1808181

Yao, Pengfei; Jiang, Xiaohua; Xue, Peng; +2 more

Optimized AC/DC Dual Active Bridge Converter using Monolithic SiC Bidirectional FET (BiDFET) for Solar PV Applications

Conference · 2021 · 2021 IEEE Energy Conversion Congress and Exposition (ECCE) · OSTI ID:2324651

Shah, Suyash Sushilkumar; Narwal, Ramandeep; Bhattacharya, Subhashish; +6 more

A Transformer Flux Balancing Scheme Based on Magnetizing Current Harmonic in Dual-Active-Bridge Converters

Citation Formats

References (19)

Similar Records

Related Subjects