Multimode Control Strategy for SiC mosfets Based Semi-Dual Active Bridge DC-DC Converter

Deshang Sha; Jiankun Zhang; Tengfei Sun

doi:10.1109/TPEL.2018.2866700

Multimode Control Strategy for SiC mosfets Based Semi-Dual Active Bridge DC-DC Converter

Deshang Sha^*, Jiankun Zhang, Tengfei Sun

^*Corresponding author for this work

School of Automation

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

40 Citations (Scopus)

Abstract

In order to meet the full load range operation requirement for a semi-dual active bridge (semi-DAB) dc-dc converter working as a battery charger, a multimode control strategy was presented. Under heavy load, it works with single phase-shifted control. Under light load, it works with pulsewidth modulation (PWM) and variable switching frequency. Under very light load conditions, it works with PWM and constant switching frequency mode. Light load conversion efficiency can be improved significantly by using the proposed multimode control strategy. Detailed loss breakdown is analyzed and compared with different switching frequencies under light load conditions. The implementation of the control strategy was given and a seamless transition can be obtained among three operating modes according to the load power. The effectiveness of the control strategy was validated by the experimental results of a 1.6-kW hardware prototype.

Original language	English
Article number	8444073
Pages (from-to)	5476-5486
Number of pages	11
Journal	IEEE Transactions on Power Electronics
Volume	34
Issue number	6
DOIs	https://doi.org/10.1109/TPEL.2018.2866700
Publication status	Published - Jun 2019

Keywords

Battery charger
DC-DC converter
dual active bridge
variable switching frequency

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10.1109/TPEL.2018.2866700

Cite this

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title = "Multimode Control Strategy for SiC mosfets Based Semi-Dual Active Bridge DC-DC Converter",

abstract = "In order to meet the full load range operation requirement for a semi-dual active bridge (semi-DAB) dc-dc converter working as a battery charger, a multimode control strategy was presented. Under heavy load, it works with single phase-shifted control. Under light load, it works with pulsewidth modulation (PWM) and variable switching frequency. Under very light load conditions, it works with PWM and constant switching frequency mode. Light load conversion efficiency can be improved significantly by using the proposed multimode control strategy. Detailed loss breakdown is analyzed and compared with different switching frequencies under light load conditions. The implementation of the control strategy was given and a seamless transition can be obtained among three operating modes according to the load power. The effectiveness of the control strategy was validated by the experimental results of a 1.6-kW hardware prototype.",

keywords = "Battery charger, DC-DC converter, dual active bridge, variable switching frequency",

author = "Deshang Sha and Jiankun Zhang and Tengfei Sun",

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AU - Sha, Deshang

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AU - Sun, Tengfei

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Y1 - 2019/6

N2 - In order to meet the full load range operation requirement for a semi-dual active bridge (semi-DAB) dc-dc converter working as a battery charger, a multimode control strategy was presented. Under heavy load, it works with single phase-shifted control. Under light load, it works with pulsewidth modulation (PWM) and variable switching frequency. Under very light load conditions, it works with PWM and constant switching frequency mode. Light load conversion efficiency can be improved significantly by using the proposed multimode control strategy. Detailed loss breakdown is analyzed and compared with different switching frequencies under light load conditions. The implementation of the control strategy was given and a seamless transition can be obtained among three operating modes according to the load power. The effectiveness of the control strategy was validated by the experimental results of a 1.6-kW hardware prototype.

AB - In order to meet the full load range operation requirement for a semi-dual active bridge (semi-DAB) dc-dc converter working as a battery charger, a multimode control strategy was presented. Under heavy load, it works with single phase-shifted control. Under light load, it works with pulsewidth modulation (PWM) and variable switching frequency. Under very light load conditions, it works with PWM and constant switching frequency mode. Light load conversion efficiency can be improved significantly by using the proposed multimode control strategy. Detailed loss breakdown is analyzed and compared with different switching frequencies under light load conditions. The implementation of the control strategy was given and a seamless transition can be obtained among three operating modes according to the load power. The effectiveness of the control strategy was validated by the experimental results of a 1.6-kW hardware prototype.

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Multimode Control Strategy for SiC mosfets Based Semi-Dual Active Bridge DC-DC Converter

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