Single-Stage Quad-Active-Bridge Series-Resonant AC-DC Converter: Modulation for Active and Reactive Power
Convertisseur AC-DC de type « Pont Actif quadruple », à un étage de conversion et à résonance série : modulation pour échanges de puissance active et réactive
Résumé
The single-stage AC-DC converters have a high potential to be used in electric vehicle (EV) chargers for vehicleto-grid (V2G) applications due to its durability, high efficiency and reduced volume. In V2G applications, bidirectional active and reactive power transfer are required. However, reactive power transfer in single-stage AC-DC converters can increase considerably the high frequency (HF) current, reducing the converter efficiency. With the aim of overcoming this limitation, this article proposes a novel modulation for a single-stage threephase AC-DC Quad-Active-Bridge Series-Resonant (QABSR) converter. The proposed modulation allows to obtain a HF current with a constant and minimum amplitude throughout grid period. Experimental results validate the converter steady-state response for bidirectional active and reactive power transfer.
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