Paper Title
Resonate Enhanced Full Bridge Onboard Charger LLC Tank And Synchronous Rectification Design
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Keywords
DC DC converter for electric vehicle
Abstract
This paper presents the redesign of a phase-shifted full-bridge onboard DC–DC converter for electric-vehicle charging by integrating an LLC resonant tank on the primary side and synchronous rectification on the secondary. The resonant tank (Lr–Cr with transformer magnetizing inductance Lm) enables soft switching over a wide load range, substantially reducing switching and reverse-recovery losses while permitting higher effective switching frequencies and a smaller magnetic footprint. A frequency-control strategy is used to regulate the output voltage while maintaining Zero-Voltage Switching (ZVS) margins across nominal input/output conditions. Detailed magnetics design, tank tuning, and control implementation are described to manage resonant currents, limit RMS stress, and ensure robust transient and startup behavior. Comparative loss breakdowns from simulations and hardware prototyping show a marked reduction in switching energy and improved thermal distribution versus the original phase-shifted topology, leading to higher overall efficiency and reduced EMI generation. The proposed LLC approach offers a practical pathway for increasing power density and efficiency in onboard chargers while maintaining reliability and controllability required for automotive applications.
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How To Cite (APA)
Er.E.Rajasekaran & Gayathri J (November-2025). Resonate Enhanced Full Bridge Onboard Charger LLC Tank And Synchronous Rectification Design . INTERNATIONAL JOURNAL OF NOVEL RESEARCH AND DEVELOPMENT, 10(11), 331-393. https://ijnrd.org/papers/IJNRDTH00235.pdf
Issue
Volume 10 Issue 11, November-2025
Pages : 331-393
Other Publication Details
Paper Reg. ID: IJNRD_310111
Published Paper Id: IJNRDTH00235
Downloads: 00065
Research Area: Other area not in list
Author Type: Indian Author
Country: Cuddalore , Tamil Nadu , India
Published Paper PDF: https://ijnrd.org/papers/IJNRDTH00235.pdf
Published Paper URL: https://ijnrd.org/viewpaperforall?paper=IJNRDTH00235
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