A Model-Free Capacitor Voltage Balancing Method for Multilevel DAB Converters

Article Automation & Control Systems

Capacitor Voltage Balancing for Multilevel Dual-Active-Bridge DC-DC Converters

Chaochao Song et al.

Summary: This article proposes a balancing control scheme based on the complementary switching-state method to address two typical problems in capacitor voltage balancing. The method can significantly reduce power fluctuation and current overshoot during the balancing process, as well as simplify the determination of transformer current polarity.

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS (2023)

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Article Engineering, Electrical & Electronic

Closed-Loop Black Start-Up of Dual-Active-Bridge Converter With Boosted Dynamics and Soft-Switching Operation

Jingxin Hu et al.

Summary: The letter introduces a closed-loop black start-up control for the DAB converter, which allows the converter to start up with maximum precharge current while achieving soft-switching operation. This method simplifies the start-up process, reduces the need for parameter fine-tuning, and significantly shortens start-up transients.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2021)

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Article Engineering, Electrical & Electronic

Transient DC Bias Current Reducing for Bidirectional Dual-Active-Bridge DC-DC Converter by Modifying Modulation

Caiwei Yang et al.

Summary: By staggering the load time values of the primary bridge and secondary bridge in the modulation process, the transient dc bias current in dual-active-bridge (DAB) dc-dc converter can be reduced or eliminated. This modified modulation scheme does not require any transitional period or extra calculation, and the time delay in the closed-loop control is constant and smaller than previous schemes. The experimental results confirm the theoretical analysis and demonstrate the practical feasibility of the modified modulation schemes.

IEEE TRANSACTIONS ON POWER ELECTRONICS (2021)

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Article Engineering, Electrical & Electronic