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In recent years, the wireless EV chargers have been spotlighted as convenient, safe, and clean apparatus. In this paper, proposed has been a newly developed large-gap wireless power transfer EV charger which can communicate control signal to a power feeding unit from a power receiving unit without any additional communication equipment. The wireless power transfer (WPT) system with a single-ended...
Recently, the wireless EV chargers have been spotlighted because of safe, and easy use apparatus. Proposed has been a newly developed large-gap wireless power transfer EV charger which can communicate control signal to a power feeding from a secondary side with no communication equipment. The SEPP inverter WPT apparatus is designed for large-gap loose-coupling condition by characteristic-impedance...
An LLC resonant circuit-based full-bridge dc–dc converter with an LC antiresonant tank for improving the performance of pulse frequency modulation (PFM) is proposed in this paper. The proposed resonant dc–dc converter, named as LLC-LC converter, can extend a voltage regulation area below the unity gain with a smaller frequency variation of PFM by the effect of the antiresonant tank. This advantageous...
In recent years, as an eco-friendly EV charging system, the wireless charging has become a topic due to the merits such as convenient, safety, and clean. In this paper, in order to realize a large-gap wireless charger which can communicate between the power feeding and receiving units without any additional communication device, a wireless power transfer (WPT) system using a single-ended push-pull...
This paper presents a novel prototype of a time-sharing frequency doubler principle-based current-fed zero current soft-switching (ZCS) high frequency resonant (HF-R) inverter for inductive power transfer (IPT) systems. The newly-proposed ZCS HF-R inverter is suitable for producing a higher frequency resonant current with switching power loss reduction by using a middle-class switching frequency insulated-gate-bipolar-power...
This paper presents a novel prototype of a timesharing frequency doubler principle-based current-fed zero current soft-switching (ZCS) high frequency resonant (HF-R) inverter for inductive power transfer (IPT) systems. The newly-proposed ZCS HF-R inverter is suitable for producing a higher frequency resonant current with switching power loss reduction by using a middle-class switching frequency insulated-gate-bipolar-power...
This paper is mainly concerned with the state-of-the-art feasible development of a novel prototype high-efficiency phase-shift soft-switching pulse modulated full-bridge DC-DC power converter with a high-frequency power transformer, which is designed for utility-grid tied photovoltaic (PV) power inverters. The proposed high-frequency transformer (HFTR) link DC-DC converter topology is based upon a...
This paper mentions an inverter control scheme suitable for series resonant load. The proposed method changes pulse density modulation (PDM) scheme, and improves power controllability of series resonant load inverter. Unlike pulse width modulation (PWM) method, the proposed scheme does not cause switching noise peaks.
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