Advanced Modulation Scheme of a Dual-Active-Bridge Series Resonant Converter (DABSRC) for Enhanced Performance

Asad Hameed, Ali Nauman, Munleef Quadir (), Irfan Latif Khan, Adeel Iqbal, Riaz Hussain and Tahir Khurshaid ()
Additional contact information
Asad Hameed: Department of Electrical and Computer Engineering, COMSATS University, Islamabad 45550, Pakistan
Ali Nauman: Department of Information and Communication Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
Munleef Quadir: Department of Computer Science and Information Technology, Jazan University, Jazan 45142, Saudi Arabia
Irfan Latif Khan: Department of Electrical and Computer Engineering, COMSATS University, Islamabad 45550, Pakistan
Adeel Iqbal: Department of Electrical and Computer Engineering, COMSATS University, Islamabad 45550, Pakistan
Riaz Hussain: Department of Electrical and Computer Engineering, COMSATS University, Islamabad 45550, Pakistan
Tahir Khurshaid: Department of Electrical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea

Mathematics, 2022, vol. 10, issue 23, 1-20

Abstract: This paper proposes a two-degree-of-freedom (2-DoF) modulation technique for the efficient optimization of an open-loop three-phase dual-active-bridge series resonant converter (3P-DABSRC). The efficiency and performance of an conventional dual-active-bridge (DAB) converter decrease when it is operated over a wide range of voltage gain. The efficiency and performance of a DAB converter depend upon the switching and conduction losses. Circulating current is the main cause of conduction loss, and hard switching of active switches adds a switching loss. To increase the performance of DAB converters, the first objective is to minimize the conduction loss, and the second objective is to reduce the switching loss. Still, unfortunately, it is not easy to achieve these two objectives simultaneously. Circulating current helps us to reduce the switching loss, but the unbridled amount of circulating current will increase the root-mean-square inductor tank current, and as a result, the conduction loss will be increased. This paper presents an advanced modulation scheme for a 3P-DABSRC that can be used not only in low-power applications, but also in high-power applications. The DABSRC consists of a series LC resonant tank, isolated high-frequency transformer, and dual active bridge connected with the primary and secondary sides of the transformer. The proposed 2-DoF modulation technique not only minimizes the circulating current, but also eliminates the switching loss. Keeping the minimum phase shift between the primary and secondary bridges reduces the circulating current, and thus, all switches can be operated with zero-voltage switching (ZVS) for the entire power range. The power is controlled by changing the switching frequency from 45 to 63 kHz. To confirm the proposed topology and modulation scheme, a 1500 W DABSRC, which interfaces a 300 V DC bus with a 75 V DC bus, is simulated. A loss model of the proposed topology is also made to verify the results. The simulation results are used to confirm the proper operation of the 3P-DABSRC.

Keywords: dual-active-bridge series resonant converter; open loop; dual active bridge; switching loss; conduction loss; hard switching; circulating current; LC resonant tank; phase shift; switching frequency (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2227-7390/10/23/4402/pdf (application/pdf)
https://www.mdpi.com/2227-7390/10/23/4402/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jmathe:v:10:y:2022:i:23:p:4402-:d:980471

Access Statistics for this article

Mathematics is currently edited by Ms. Emma He

More articles in Mathematics from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().