Model Predictive Control Based Advanced Switching Strategy for H-Bridge Converter Used in SMES Applications to Obtain Even Loss Sharing

Chowdhury, Md. Razon; Chowdhury, Sumon; Rahman, Md. Ashib; Islam, Md. Rabiul; Mahmud, M. A. Parvez; Kouzani, Abbas Z.

doi:10.1109/tasc.2021.3094443

Cited by 3 publications

(1 citation statement)

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“…Current imbalance problem should be solved because it increases the RMS current which causes low efficiency. Also, it leads to unequal loss distribution for primary switches and rectifier diodes which deteriorates the reliability and lifetime of the converter [27]- [28].…”

Section: Introductionmentioning

confidence: 99%

A Novel Center-Tapped Rectifier With Current-Balancing and Voltage-Clamped Capability for LLC Resonant Converter

Kim,

Kang

2024

IEEE Access

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A novel center-tapped rectifier with current-balancing and voltage-clamped (CBVC) capability for the LLC resonant converter is proposed. A secondary capacitor is inserted between the contact points of the rectifier diode and the secondary winding of the transformer. The amount of the current flowing through each primary switches and rectifier diodes become almost the same by adopting the CBVC center-tapped rectifier. Equal distribution of the current improves the reliability and lifetime of the primary switches and rectifier diodes. In addition, the voltage across the rectifier diodes in the CBVC center-tapped rectifier is clamped by two times the output voltage. The conduction loss of the rectifier diodes is decreased since the diodes with low forward voltage drop can be used. Moreover, half of the output capacitor is utilized as a secondary side capacitor, which means no additional components. The validity of the proposed converter is verified through experiments on a prototype for 400 VDC input to 45-70 V/4 A output application.

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Section: Introductionmentioning

confidence: 99%