LLC converter with Taiwan Tech center-tapped rectifier (LLC-TCT) for solar power conversion applications

Leu, Ching-Shan; Huang, Pin-Yu; Wang, Weikai

doi:10.1109/ifeec.2013.6687560

Cited by 7 publications

(2 citation statements)

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“…However, it suffers from the high voltage oscillation across the rectifier diodes and requires the digital controller to control the primary switches. Fourth, the converter in [21] proposed the Taiwan Tech center-tapped rectifier whose characteristic is similar to the full-bridge rectifier in terms of the component count, voltage stress, and current balancing capability. Its drawbacks are large number of rectifier diodes, large conduction loss of the rectifier diodes, additional capacitor for rectifier circuit, and requirement of floating gate driver to use SRs.…”

Section: Rectifier Circuit Configuration For Synchronous Rectifiermentioning

confidence: 99%

“…High voltage oscillation is occurred because of the resonance between the secondary leakage inductance and junction capacitance of the rectifier diode. In [21], the Taiwan Tech centertapped rectifier is proposed, and the voltage across the rectifier diodes is clamped to the output voltage. However, this rectifier requires four rectifier diodes which increases the power loss and cost.…”

Section: Introductionmentioning

confidence: 99%

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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: Rectifier Circuit Configuration For Synchronous Rectifiermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%