This document discusses optimized operation of a current-fed dual active bridge DC-DC converter for photovoltaic applications. It analyzes the operating principle and soft-switching conditions over a wide operating range with phase shift and duty cycle control. An optimized operating mode is proposed to achieve minimum RMS transformer current and extend the soft-switching region to reduce losses. Experimental results from a 5 kW hardware prototype verify the analysis. Contact and location information is also provided for an organization that develops IEEE software and hardware projects.

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2. DOCUMENT FORMAT
• Abstract:
• Introduction:
• Literature Survey:
• System Analysis:
• Existing System:
• Disadvantages:
• Proposed System:
• Advantages:
• System Requirements:
• Block Diagram:
• Working Flow Diagram:
• Circuit Diagram:
• Implementation:
• Modules Description:
• System Study:
• System Testing:
• Software Description:
• Sample code:
• Conclusion:
• Future Enhancement:
• References:
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3. OPTIMIZED OPERATION OF CURRENT-FED DUAL
ACTIVE BRIDGE DC-DC CONVERTER FOR PV
APPLICATIONS
TITLE
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4. ABSTRACT
The current-fed dual active bridge (CF-DAB) dc-dc converter gains growing applications in
photovoltaic (PV) and energy storage systems due to the advantages of wide input voltage range,
high step-up ratio, low input current ripple and multiport interface capability. In addition, the direct
input current controllability and extra control freedom of CF-DAB converter make it possible to
buffer the double-line-frequency energy in grid-interactive PV systems without using electrolytic
capacitors in the dc-link. Therefore, the PV system achieves high reliability as well as high efficient
maximum power point tracking. This paper studies the optimized operation of CF-DAB converter for
PV application in order to improve the system efficiency. The operating principle and soft-switching
conditions over the wide operating range are thoroughly analyzed with phase shift and duty cycle
control, and an optimized operating mode is proposed to achieve minimum root-mean-square (rms)
transformer current. The proposed operating mode can extend the soft-switching region and reduce
the power loss, especially under heavy load and high input voltage. And the efficiency can be further
improved with higher dc-link voltage. A 5 kW hardware prototype was built in the lab, and
experimental results are provided for verification. The paper provides a design guideline for CF-DAB
converter applied to PV systems, as well as other applications with wide input voltage variation.
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5. CONTACT
MOBILE No:
99436 99916
99436 99926
99436 99936
E Mail:
i3eprojectskarur@gmail.com
Web:
www.i3etechnologies.com
www.i3eprojects.com
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6. ADDRESS
#23A, 2nd Floor SKS Complex,
Bus Stand Opp. Karur-639 001.
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7. Course
Embedded System,
PLC,
MATLAB,
Hardware & Networking.
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8. We Develop IEEE Software &
Hardware Projects
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