Abstract
A novel circuit topology for an on-board battery charger for plugged-in electric vehicles (PEVs) is presented in this paper. The proposed on-board battery charger is composed of three H-bridges on the primary side, a high-frequency transformer (HFT), and a current doubler circuit on the secondary side of the HFT. As part of an electric vehicle (EV) on-board charger, it is required to have a highly compact and efficient, lightweight, and isolated direct current (DC)–DC converter to enable battery charging through voltage/current regulation. In this work, performance characteristics of full-bridge phase-shift topology are analyzed and compared for EV charging applications. The current doubler with synchronous rectification topology is chosen due to its wider-range soft-switching availability over the full load range, and potential for a smaller and more compact size. The design employs a phase-shift full-bridge topology in the primary power stage. The current doubler with synchronous recitation is placed on the secondary. Over 92% of efficiency is achieved on the isolated charger. Design considerations for optimized zero-voltage transition are disused.
Highlights
Electric vehicles (EVs) and plug-in hybrid electric vehicle (EV) (PHEVs) technology have drawn interest in the electric vehicles (EVs) market by manufacturers and customers, and are being sustained by several administrations with programs of development [1,2]
Because the energy required for plug-in hybrid EVs (PHEVs) and EVs is partially or fully delivered by batteries charged from a public charging station, to charge these batteries, an onboard charger (OBC) should be installed [3]
This paper introduces the analyses and performance of a phase-shift converter investigated and Various have been introduced for ondesignedsoft-switching to operate at 40high-frequency-linked kHz and 3.2 kW for EV direct current (DC)–DC
Summary
Electric vehicles (EVs) and plug-in hybrid EVs (PHEVs) technology have drawn interest in the EVs market by manufacturers and customers, and are being sustained by several administrations with programs of development [1,2]. SRCs have audible noise or power regulation issues caused by excessive low switching frequency at light-load operation condition, it has resonant current waveform [21] Zero-voltage soft-switching (ZVS) of semiconductor devices is achieved with constant switching frequency operation [25] These full-bridge phase-shift converters have several drawbacks, such as high circulating current and narrow ZVS range. Full-bridge boards (PCBs), which can cause switching a faulty triggering of switches to circuit failure Another challenge is the efficient design of magnetic components, which requires minimizing theZVS phase-shift converters have several drawbacks, such as high circulating current and narrow impacts of the skin extended and proximity effects on the transformer winding tothe reduce the conduction losscannot at range. The prototype circuit can achieve an approximate efficiency of 96% with an appropriate design of the driving circuit and control signal
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