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A new single-stage three-phase resonant ac-dc matrix-based converter is proposed. It uses a new modulation scheme designed for use with a tuned LCL resonant network that achieves unity power factor at both network ports, which leads to reduction in rms bridge currents and conduction loss. The line-frequency phase currents are controllable by modulating the ac-side and dc-side switches according to...
A new single-stage three-phase resonant ac-dc quad-active-bridge (QAD) converter is proposed. It uses a new modulation scheme designed for use with a tuned LCL resonant network that achieves unity power factor at both network ports, which leads to reduction in rms bridge currents and conduction loss. The line-frequency phase currents are individually controllable by modulating the ac-side and dc-side...
This paper proposes a capacitive current balancing method for multistring LED lighting system driven by a LCC resonant converter. Different from conventional current balancing methods, this method replaces the capacitor in the resonant tank by a switch-controlled capacitor (SCC) with which the output voltage can be regulated by modulating the frequency of the resonant tank instead of the switching...
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