This paper presents an auxiliary passive circuit and control design for wireless power transfer (WPT) systems in DC microgrids to achieve optimal efficiency while maintain accurate output voltage regulation. An inductance is added at the transmitter resonator form a current sink ensure zero switching (ZVS) of primary-side full-bridge inverter with even extremely light load conditions. Moreover,...

This paper presents a novel high step-down DC-DC converter based on switched-capacitor resonant topology. It is presented in 48/8 V version, which was verified by simulations and experiments. The most notable features specific to this are an almost non-iductive design relatively low voltage stress across switching devices. proposed topology allows for zero-current-switching (ZCS) zero-voltage-s...

We have developed a new isolated AC/DC converter for electric vehicle on-board chargers. It consists of an AC/DC converter with Gradationally Controlled Voltage Inverter (GCVI AC/DC converter) and an isolated Zero-Voltage-Switching (ZVS) DC/DC converter, each of which is optimally controlled to convert in a highly efficient means. As a result, the new on-board charger has achieved a power conve...

This paper presents a robust passivity-based control (RPBC) strategy for half-wave zero-voltage switching quasi-resonant (HW-ZVS-QR) buck and boost type converters. The proposed controller is based on energy shaping damping injection. Theoretical analysis shows that the resulted closed-loop HW-ZVS-QRs are globally asymptotically stabilised even if physical constraint magnitude of signal taken i...

High switching frequency operation in power converters leads to a significant reduction size at the cost of increased losses. Thus, soft techniques become necessary reduce WBG devices have benefit low turn-off losses, but turn-on losses are still significant. Triangular Current Mode (TCM) control can achieve zero voltage (ZVS) without adding extra resonant components or active converter. For th...