Globally Unified ZVS and Quasi-optimal Minimum Conduction Loss Modulation of DAB Converters

Hangbin Yu; Lijun  Hang; Xiang Zheng; Zhen  He; Yuanbin He; Lei  Shen; Chi  Shao; Pingliang  Zeng; Qiuwei Wu; Xiaolei  Yang; Huan  Tao

doi:10.1109/TTE.2021.3131192

Globally Unified ZVS and Quasi-optimal Minimum Conduction Loss Modulation of DAB Converters

Hangbin Yu, Lijun Hang, Xiang Zheng, Zhen He, Yuanbin He, Lei Shen, Chi Shao, Pingliang Zeng, Qiuwei Wu, Xiaolei Yang, Huan Tao

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Abstract

Due to the quick development of wide bandgap power devices, the power density of the converters is expected to be much higher. In order to increase the power density and efficiency of the DAB converter, especially the efficiency under light load, a quasi-optimal current root-mean-square (RMS) control strategy to achieve All-ZVS is proposed by taking the inductor RMS current optimization algorithm into account in this paper. First the constraint conditions for realizing ZVS of all switching devices under different operating modes are concluded by analyzing the switching mode and the working principle of the DAB converter under the triple phase shift (TPS) modulation. The ZVS domain for All-ZVS operation in each operating mode is further obtained. Then, the GOC strategy is combined with the ZVS condition to derive the novel modulation for all operating modes. Based on this scheme, the switching conditions of all switches can be improved, and the efficiency of the DAB system under the light load is optimized. With ZVS operation, the
switching frequency can be raised. Finally, a GaN HEMT based prototype of DAB converter was built and the switching frequency is 200kHz, the effectiveness of the proposed modulation scheme was verified by the experimental results.

Original language	English
Journal	IEEE Transactions on Transportation Electrification
Volume	8
Issue number	3
Pages (from-to)	3989-4000
ISSN	2332-7782
DOIs	https://doi.org/10.1109/TTE.2021.3131192
Publication status	Published - 2022

Keywords

Dual Active Bridge converter
Current Control
Conduction Loss
Triple Phase Shift Modulation
ZVS

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10.1109/TTE.2021.3131192

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@article{b8bbfe3f75df44eea27d2c1cef1438c4,

title = "Globally Unified ZVS and Quasi-optimal Minimum Conduction Loss Modulation of DAB Converters",

abstract = "Due to the quick development of wide bandgap power devices, the power density of the converters is expected to be much higher. In order to increase the power density and efficiency of the DAB converter, especially the efficiency under light load, a quasi-optimal current root-mean-square (RMS) control strategy to achieve All-ZVS is proposed by taking the inductor RMS current optimization algorithm into account in this paper. First the constraint conditions for realizing ZVS of all switching devices under different operating modes are concluded by analyzing the switching mode and the working principle of the DAB converter under the triple phase shift (TPS) modulation. The ZVS domain for All-ZVS operation in each operating mode is further obtained. Then, the GOC strategy is combined with the ZVS condition to derive the novel modulation for all operating modes. Based on this scheme, the switching conditions of all switches can be improved, and the efficiency of the DAB system under the light load is optimized. With ZVS operation, the switching frequency can be raised. Finally, a GaN HEMT based prototype of DAB converter was built and the switching frequency is 200kHz, the effectiveness of the proposed modulation scheme was verified by the experimental results.",

keywords = "Dual Active Bridge converter, Current Control, Conduction Loss, Triple Phase Shift Modulation, ZVS",

author = "Hangbin Yu and Lijun Hang and Xiang Zheng and Zhen He and Yuanbin He and Lei Shen and Chi Shao and Pingliang Zeng and Qiuwei Wu and Xiaolei Yang and Huan Tao",

year = "2022",

doi = "10.1109/TTE.2021.3131192",

language = "English",

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pages = "3989--4000",

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publisher = "Institute of Electrical and Electronics Engineers Inc.",

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TY - JOUR

T1 - Globally Unified ZVS and Quasi-optimal Minimum Conduction Loss Modulation of DAB Converters

AU - Yu, Hangbin

AU - Hang, Lijun

AU - Zheng, Xiang

AU - He, Zhen

AU - He, Yuanbin

AU - Shen, Lei

AU - Shao, Chi

AU - Zeng, Pingliang

AU - Wu, Qiuwei

AU - Yang, Xiaolei

AU - Tao, Huan

PY - 2022

Y1 - 2022

N2 - Due to the quick development of wide bandgap power devices, the power density of the converters is expected to be much higher. In order to increase the power density and efficiency of the DAB converter, especially the efficiency under light load, a quasi-optimal current root-mean-square (RMS) control strategy to achieve All-ZVS is proposed by taking the inductor RMS current optimization algorithm into account in this paper. First the constraint conditions for realizing ZVS of all switching devices under different operating modes are concluded by analyzing the switching mode and the working principle of the DAB converter under the triple phase shift (TPS) modulation. The ZVS domain for All-ZVS operation in each operating mode is further obtained. Then, the GOC strategy is combined with the ZVS condition to derive the novel modulation for all operating modes. Based on this scheme, the switching conditions of all switches can be improved, and the efficiency of the DAB system under the light load is optimized. With ZVS operation, the switching frequency can be raised. Finally, a GaN HEMT based prototype of DAB converter was built and the switching frequency is 200kHz, the effectiveness of the proposed modulation scheme was verified by the experimental results.

AB - Due to the quick development of wide bandgap power devices, the power density of the converters is expected to be much higher. In order to increase the power density and efficiency of the DAB converter, especially the efficiency under light load, a quasi-optimal current root-mean-square (RMS) control strategy to achieve All-ZVS is proposed by taking the inductor RMS current optimization algorithm into account in this paper. First the constraint conditions for realizing ZVS of all switching devices under different operating modes are concluded by analyzing the switching mode and the working principle of the DAB converter under the triple phase shift (TPS) modulation. The ZVS domain for All-ZVS operation in each operating mode is further obtained. Then, the GOC strategy is combined with the ZVS condition to derive the novel modulation for all operating modes. Based on this scheme, the switching conditions of all switches can be improved, and the efficiency of the DAB system under the light load is optimized. With ZVS operation, the switching frequency can be raised. Finally, a GaN HEMT based prototype of DAB converter was built and the switching frequency is 200kHz, the effectiveness of the proposed modulation scheme was verified by the experimental results.

KW - Dual Active Bridge converter

KW - Current Control

KW - Conduction Loss

KW - Triple Phase Shift Modulation

KW - ZVS

U2 - 10.1109/TTE.2021.3131192

DO - 10.1109/TTE.2021.3131192

M3 - Journal article

SN - 2332-7782

VL - 8

SP - 3989

EP - 4000

JO - IEEE Transactions on Transportation Electrification

JF - IEEE Transactions on Transportation Electrification

IS - 3

ER -

Globally Unified ZVS and Quasi-optimal Minimum Conduction Loss Modulation of DAB Converters

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