This paper presents a novel ZVZCS full-bridge DC/DC converter, which is able to process and deliver power efficiently over very wide load variations. The proposed converter part of plug-in AC/DC used charge the traction battery (high voltage battery) in an electric vehicle. key challenge this application operation from absolutely no-load full-load conditions. In order confirm reliable under such variations, should not only operate with soft-switching full condition satisfactory efficiency...

This paper presents a novel, yet simple zero-voltage switching (ZVS) interleaved boost power factor correction (PFC) ac/dc converter used to charge the traction battery of an electric vehicle from utility mains. The proposed opology consists passive auxiliary circuit, placed between two phases front-end PFC converter, which provides enough current and discharge MOSFETs' output capacitors during turn-ON times. Therefore, MOSFETs are turned ON at zero voltage. maintains ZVS for universal input...

Pulse width modulation (PWM) current-fed full-bridge dc-dc boost converters are typically used in applications where the output voltage is considerably higher than input voltage. In this paper, a comparison made between two converter topologies of type-the standard zero-voltage switching (ZVS) active-clamp topology and new zero-current (ZCS) topology. This paper begins with review operation ZVS that ZCS general; advantages disadvantages each approach stated. A ZCS-PWM then introduced. The...

Power electronic converter systems for applications such as telecom, automotive, and space can have dc voltage buses that are backed up with batteries or supercapacitors. These supercapacitors connected to the bidirectional dc-dc converters allow them be discharged charged, depending on operating conditions. Bidirectional may isolated nonisolated application. A new soft-switched will proposed in this letter. The operate soft switching, a continuous inductor current, fixed switching...

A new zero-voltage-switched bidirectional dc-dc converter with coupled inductors is proposed in the paper. The can operate a steep conversion ratio, soft switching, continuous inductor current, and fixed switching frequency. It also switch stresses of conventional pulsewidth-modulation-tapped/coupled-inductor regardless direction power flow without any voltage spikes across switches during turn-OFF. These features are due to very simple auxiliary circuit that operational absorbs energy from...

Isolated bidirectional dc-dc converters (IBDCs) with high efficiency and power density demand for complete zero voltage switching (ZVS) of all active devices its entire operating range. This paper presents a comprehensive analysis optimization problem formulation triple phase shift (TPS)-controlled inductive link based fed-dual bridge (VF-DAB) converter. Limitation on natural ZVS range the TPS-controlled VF-DAB is presented. To extend in converter, passive auxiliary inductors are connected...

AC/DC converters used for charging high-voltage battery banks in electric vehicles from the utility mains, generally, consist of two stages. The first is a power factor correction (PFC) ac/dc boost converter to reduce input current harmonics injected grid and convert ac voltage an intermediate dc (dc-bus voltage). second part isolated dc/dc providing high-frequency galvanic isolation. This paper presents novel intelligent control law based on differential flatness theory PFC stage which...

AC/DC converters used in electric vehicles generally consist of two stages: an input power factor correction (PFC) boost stage that converts AC voltage to intermediate DC and reduces current harmonics injected the grid, a DC/DC converter provides high-frequency galvanic isolation. Since there is low-frequency ripple (second harmonic ac line frequency) output PFC converter, loop conventional control system typically has very low bandwidth avoid distorting waveform. This causes controller have...

AC/DC converter systems generally have two stages: an input power factor correction (PFC) boost ac/dc stage that converts ac voltage to intermediate dc while reducing the current harmonics injected grid, followed by a dc/dc steps up or down dc-bus as required output load and provides high-frequency galvanic isolation. Since low-frequency ripple (second harmonic of line frequency) exists in PFC due ripple, loop conventional control system must very low bandwidth order avoid distortions...

Zero-current-transition pulsewidth-modulation (ZCT-PWM) boost converters are conventional that use an active auxiliary circuit to turn off the main power switch with zero-current switching; operation and properties of these focus this paper. In paper, general operating principles behind all ZCT-PWM reviewed, specific discussed. The strengths weaknesses each converter stated, a new improved is proposed Experimental results obtained from experimental prototype implemented several circuits...

Single-phase power factor correction (PFC) ac-dc converters are widely used in the industry for conversion from single phase ac-mains to an isolated output dc voltage. Typically, high-power applications, such use boost input converter followed by a dc-dc full-bridge converter. A new single-stage universal PFC ac full-bridge, pulse-width modulated is proposed this paper. The can operate with excellent factor, continuous and currents, non-excessive intermediate bus voltage has reduced number...

An isolated single-stage three-phase ac-dc converter is proposed for aircraft system in this paper. The uses the matrix (3 × 1) topology to directly convert threephase line frequency ac voltages into high-frequency voltage, and therefore facilitates use of transformer galvanic isolation leading more compact lighter weight power electronic converter. A space vector modulationbased switching scheme digitally implemented superior input quality improved conversion efficiency. current doubler...

A new ac-dc single-stage voltage-fed pulsewidth-modulation (PWM) full-bridge converter is proposed in this paper. The can simultaneously perform input power factor correction and dc-dc conversion using conventional phase-shift PWM maintain a primary-side dc bus voltage of less than 450 V even at high line 265 <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">rms</sub> . This combination features that few, if any, other converters the same type...

Three-level PWM dc-dc converters convert high dc voltage (>500 V) generally at the output of a three-phase ac-dc rectifier in to an isolated which can be used power data center loads. Strict efficiency requirements loads from 20% 50% full load for telecom applications have been introduced by energy star enforcing industries improve converter powering data-center those High-efficiency low and mid switching frequency three-level implemented with MOSFETs achieved reducing losses through...

High-frequency link matrix rectifier (HFLMR) is an isolated single-stage three-phase ac–dc converter, which originates from the converter and inherits advantages of such as no dc-link components. In this paper, HFLMR for more electric aircraft system proposed. The proposed consists a input <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LC</i> filter, rectifier, high-frequency transformer, diode bridge purely capacitive output filter....

This study analyses social media networks in tourism using graphs focusing on user influence, hashtag patterns, and engagement. aims to reveal the structural function of core users, development hashtags, interaction patterns that construct discourses. Using NodeXL 2024 for network visualization clustering analysis, this measures centrality, modularity, geodesic distances influential detection, topical dissemination, engagement pattern identification. The results uncover bridging nodes...

Optical Network on Chip (ONoC) is being researched for integrating no of cores a single chip or die. As there are some subsisting topologies optical interconnect ONoC, multi segment bus (MSB) one them in which cluster interconnected domain. Along the signal path these topologies, losses and crosstalk component takes into account. MSB topology results reduction power to noise ratio also decreases. This paper presents simulation analysis 16 topology. The design made by considering due various...

Three-phase power factor correction rectifiers followed by a dc-dc isolated converter are widely used for conversion of three-phase ac to dc output high-power telecommunication loads. In this paper, reduced device count nine-switch topology, which integrates the two stages conventional ac- supply with an voltage telecom applications is proposed. A novel modulation scheme using three separate 120° phase-shifted high-frequency carriers legs proposed developed drive switches. It shown that such...

This paper presents a matrix-based nonisolated three-phase ac-dc converter with current-doubler rectifier (CDR) circuit. Buck-type rectifiers are normally used for step-down ac-to-dc conversion. However, buck rectifiers, the lower bound of rectified dc voltage is limited as severely underutilized by operating at modulation index. Moreover, index, rms values current increases contributing to higher conduction losses. using matrix (3 × 1) topology followed CDR, desired output can be reduced...

The nine-switch converter is a multiport having two three-phase terminals and dc-link, just like 12-switch back-to-back (BTB) converter, but with 25% reduction of active switch count. However, the from to 9-switch may not always be an efficient choice considering losses in switches. Only load-source combination for ac-ac common frequency mode source-source ac-dc different (ac-dc DF) have been reported, so far, yield relatively lower loss converter. This paper shows that can even combination,...

Microinverters require high voltage gain capability for interfacing the low dc output of photovoltaic (PV) module to single-phase ac grid. A two-stage nonisolated inverter is proposed in this paper, with a first boost stage and second traditional pulse width modulated grid-tied stage. The consists coupled inductor added multiplier achieve required at efficiency operate over wide input range. Among topologies, adding clamp circuit common solution limit spike caused by leakage inductance. In...

Two stage ac-dc converters consisting of front-end power factor correction boost converter followed by an isolated dc-dc form the industry workhorses for powering network servers, telecom, and other dc loads. For safe uninterrupted operation during sudden intermittences in supplied from ac mains, should be able to supply load with constant output voltage order prevent them unwanted resetting or words exhibit sufficient hold-up time (HUT) operation. This paper proposes a novel nonresonant...