A Coupled Inductor Scheme for CLLC Bidirectional Converter and Optimized Current Detection Method

Article Engineering, Electrical & Electronic

Synchronous Rectification Based on Resonant Inductor Voltage for CLLC Bidirectional Converter

Ning Chen et al.

Summary: This article proposes a synchronous rectification (SR) scheme based on resonant inductor voltage, which indirectly obtains the polarity of the resonant current through the inductor voltage, avoiding the use of current sensors. A corresponding SR control strategy is proposed to handle the false pulses problem caused by parasitic oscillation, and the effectiveness of the proposed SR method is verified through experimental results.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2022)

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Article Engineering, Electrical & Electronic

Control and Modulation of a Single-Phase ACDC Converter With Smooth Bidirectional Mode Switching and Symmetrical Decoupling Voltage Compensation

Xiaoqing Wang et al.

Summary: In this article, a bidirectional single-phase ac/dc converter with active power decoupling (APD) and smooth mode switching is proposed. The converter is capable of eliminating dc bus voltage ripple and suppressing load disturbances under transient conditions through the multiuse of APD cells. The proposed controller achieves symmetrical power decoupling voltage without additional sensors, ensuring minimum capacitance requirements.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2022)

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Article Computer Science, Information Systems

Magnetic Integrated LLC Resonant Converter Based on Independent Inductance Winding

Shengwei Gao et al.

Summary: LLC resonant converter has high efficiency and high frequency, but the power density is limited by multiple magnetic components. This paper proposes an integrated magnetic LLC resonant converter with independent inductance winding to reduce leakage inductance and magnetic saturation, thus improving efficiency and power density. An experimental prototype demonstrates the correctness of the design scheme.

IEEE ACCESS (2021)

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Article Engineering, Electrical & Electronic

An Optimized Digital Synchronous Rectification Scheme Based on Time-Domain Model of Resonant CLLC Circuit

Bodong Li et al.

Summary: An accurate time-domain model introduced in this article for the resonant CLLC circuit improves the determination of zero-crossing points of the secondary side resonant current. This model is more accurate and less computationally intensive compared to previous methods, allowing for adaptive generation of SR signals in different frequency ranges and smooth mode switching. The proposed SR method is also analyzed for robustness and validated through a 3-kW resonant CLLC prototype.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2021)

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Article Engineering, Electrical & Electronic