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

Shah, Suyash Sushilkumar; Narwal, Ramandeep; Bhattacharya, Subhashish; Kanale, Ajit; Cheng, Tzu-Hsuan; Mehrotra, Utkarsh; Agarwal, Aditi; Baliga, B. Jayant; Hopkins, Douglas C.

doi:10.1109/ecce47101.2021.9595533

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

Conference · Sun Oct 10 00:00:00 EDT 2021 · 2021 IEEE Energy Conversion Congress and Exposition (ECCE)

DOI:https://doi.org/10.1109/ecce47101.2021.9595533· OSTI ID:2324651

^[1]; ; ; ; Cheng, Tzu-Hsuan; ; ; ;

North Carolina State University

Grid interface power conversion systems for commercial, industrial and residential solar power generation are becoming ubiquitous due to the competitive cost of solar energy. The AC/DC dual active bridge (DAB) converter is an upcoming topology in industrial PV energy and energy storage applications, providing bidirectional power transfer and galvanic isolation. In this paper, the properties of a DAB-type converter are leveraged to propose a design optimization process. It can optimize the high-frequency RMS current, size of magnetic elements and zero-voltage-switching (ZVS) region of the converter. The resulting design is compared against that derived from a conventional approach. In addition, an algorithm to compute the harmonic currents at the DC and line frequency AC ports of the system is proposed, and the respective filter designs are presented. The optimized design of the AC/DC DAB converter is implemented using the newly developed, 1200 V, 46 mΩ, four quadrant, SiC-based monolithic bidirectional FETs (BiDFET). Experimental results from the 2.3 kW, 400V/277VRMS hardware prototype are finally presented to verify the design process.

Research Organization:: North Carolina State University

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office

DOE Contract Number:: EE0008345

OSTI ID:: 2324651

Journal Information:: 2021 IEEE Energy Conversion Congress and Exposition (ECCE), Journal Name: 2021 IEEE Energy Conversion Congress and Exposition (ECCE)

Country of Publication:: United States

Language:: English

References (10)

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

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