Full-Bridge Active-Clamp Forward-Flyback Converter with an Integrated Transformer for High-Performance and Low Cost Low-Voltage DC Converter of Vehicle Applications

Abstract

This paper presents a full-bridge active-clamp forward-flyback (FBACFF) converter with an integrated transformer sharing a single primary winding. Compared to the conventional active-clamp-forward (ACF) converter, the proposed converter has low voltage stress on the primary switches due to its full-bridge active-clamp structure, which can leverage high performance Silicon- metal–oxide–semiconductor field-effect transistor (Si-MOSFET) of low voltage rating and low channel resistance. Integrating forward and flyback operations allows the proposed converter to have much lower primary root mean square (RMS) current than the conventional phase-shifted-full-bridge (PSFB) converter, while covering wide input/output voltage range with duty ratio over 0.5. The proposed integrated transformer reduces the transformer conduction loss and simplify the secondary structure of the proposed converter. As a result, the proposed converter has several advantages: (1) high heavy load efficiency, (2) wide input voltage range operation, (3) high power density with the integrated transformer, and (4) low cost. The proposed converter is a very promising candidate for applications with wide input voltage range and high power, such as the low-voltage DC (LDC) converter for eco-friendly vehicles.

A comprehensive review on isolated and non-isolated converter configuration and fast charging technology: For battery and plug in hybrid electric vehicle

“…17 . When the switch is in ON mode, voltage is created on each side while transformer action takes place [ 101 ]. The magnetizing current for the closed switch and open switch operation becomes

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WITHDRAWN: Investigation of Non-isolated Dual Inputstep-up Dc-dc Converter Using Sliding Mode Control for Ev Application

“…On the other hand, the multiple input dc-dc converters are of isolated and non-isolated types. The isolated topologies use transformers to provide galvanic isolation that might reduce the effect of shock [7]- [9]. It offers many advantages like high gain, impedance matching, noise filtration, reduced voltage and current ratings on semiconductor devices, etc.…”

A Robust MPPT Control Based on Double Ended Forward Converter Architecture

“…Active clamp circuits contain switches along with passive circuit elements compared to only passive components of passive clamp circuits. Passive clamp circuits offer greater efficiency as they are free of conduction losses across the switch [21]. To increase efficiency and voltage gain, a coupled inductor type dc-dc converter with a passive clamp circuit is proposed [22].…”