Performance Evaluation of the FCI-DAB as a Single-Stage and Storage Capacitorless PFC Wireless Charger

Performance Evaluation of the FCI-DAB as a Single-Stage and Storage Capacitorless PFC Wireless Charger

This paper compares two single-stage (1-S) topologies for Electric Vehicle (EV) wireless battery chargers. The Single Stage Resonant-Dual Active Bridge (SSR-DAB) topology is a very compact topology due to the lack of input and output interfaces, reducing considerably the passive components of the ci...

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Bibliographic Details
Main Authors: Itziar Alzuguren, Asier Garcia-Bediaga, Ander Avila, Alejandro Rujas, Miroslav Vasic
Format: Article
Language:English
Published: IEEE 2025-01-01
Series:IEEE Access
Subjects:
Active filter
EV
FCI-DAB
floating capacitor
IPT
PFC
Online Access:https://ieeexplore.ieee.org/document/11091295/
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Summary:This paper compares two single-stage (1-S) topologies for Electric Vehicle (EV) wireless battery chargers. The Single Stage Resonant-Dual Active Bridge (SSR-DAB) topology is a very compact topology due to the lack of input and output interfaces, reducing considerably the passive components of the circuit. However, its main disadvantage compared to two-stage (2-S) solutions is the fact that it transmits the low frequency fluctuation to the output, which is solved with the recently presented Floating Capacitor Integrated-Dual Active Bridge (FCI-DAB) topology, thanks to the active filter connected in series on the primary-side of the converter. The topologies are compared in terms of controllability, bifurcation, grid current quality and system power losses, taking into account two different control strategies: duty-cycle control on the primary-side and duty-cycle control on the secondary-side of the circuit. The study concludes that the FCI-DAB works better dealing with bifurcation and grid current distortion, while the SSR-DAB converter is not able to guarantee full performance with a single control strategy. The study is validated by experimental results obtained from a scaled down GaN-based Inductive Power Transfer (IPT) 1.5 kW battery charger, achieving 93 % of efficiency and PF=0.99.
ISSN:2169-3536

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