Single-Phase Grid-Forming Strategy with Power Decoupling Implementation for Electrolytic-Capacitor-Free EV Smart Battery Charger

نویسندگان

چکیده

Smart Battery Chargers (SBCs) implementing grid-forming (GFM) control strategies are a promising solution to provide voltage and frequency support, increasing the grid reliability. Typically, GFM studies consider inverters with high DC-link capacitance. Therefore, there is research gap in two-stage DC-AC converters small capacitance strategies. This article proposes novel approach implement strategy along active power decoupling (APD) an isolated, single-phase, electrolytic-capacitor-free structure. The structure composed of source inverter (VSI), DC-linked by film capacitors, dual-active-bridge series-resonant (DABSR) DC-DC converter. High ripple allowed managed APD. Hence, electrolytic capacitors avoided, converter lifetime. In proposed approach, VSI implements strategy, operating four quadrants reactive plane. However, DABSR allows galvanic isolation, average control, suppression low-frequency on battery current, minimizing impact Design criteria given for controller, active-reactive controllers, inner APD technique. validated vehicle-to-grid stand-alone vehicle-to-home applications, using hardware-in-the-loop 2kW test setup.

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ژورنال

عنوان ژورنال: Energies

سال: 2023

ISSN: ['1996-1073']

DOI: https://doi.org/10.3390/en16020894