Results 61 to 70 of about 8,271,096 (198)
Zero-voltage transition soft-switching step-up Cuk power factor converter circuit
Scientific ReportsIn conventional Cuk power factor correction (PFC) circuits, the switching devices experience high voltage and current ripples, leading to switching losses and poor power transfer capability.
Hongxing Chen +4 more
doaj +1 more source
A series-parallel load-resonant converter for a controlled-current arc-welding power supply [PDF]
A power supply incorporating a series-parallel load-resonant converter, capable of very efficient operation over a wide range of output power is presented. The series-parallel load-resonant converter is shown to have three pairs of resonant frequencies.
Pollock, Helen Geraldine Phyllis
core
Zero-Voltage Zero-Current Switching Full Bridge PWM Converter with Reduced Filter Size
, 2011 An improved zero-voltage zero-current switching (ZVZCS) full bridge PWM converter is proposed in this paper. The proposed converter consists of two full bridge inverters in the primary side and two rectifiers in the secondary side and total power is ...
Moon, GunWoo, Cho, In Ho, Kim, Duk You
core +1 more source
New DC/DC Converter for Electrolyser Interfacing with Stand-Alone Renewable Energy System
Electrical, Control and Communication Engineering, 2012 This paper presents findings of a R&D project targeted to the development of a galvanically isolated step-down DC/DC converter for electrolyzer integration with renewable energy systems.
Andrei Blinov, Anna Andrijanovits
doaj +1 more source
IEEE Transactions on Industrial Electronics, 2011 A novel zero-voltage-transition high-efficiency bridgeless power-factor-correction (PFC) circuit with a zero-current-switching auxiliary switch was proposed, analyzed, and experimentally verified. An assist circuit, consisting of a resonant inductor, two blocking diodes, a clamping circuit, an autotransformer, and an auxiliary MOSFET switch, was used ...
Tsai, Hsien-Yi +2 more
openaire +2 more sources
A New Class of Low-Cost Three-Phase
, 2008 — Several new schemes for constructing Q0 lowharmonic rectifiers are introduced here. These Q0 ac–dc topologies are derived from parent dc–dc converter topologies.
Zero-voltage Switching +1 more
core
Novel zero-current-switching PWM step down Sepic converter
, 1998 This paper presents a new step down PWM (pulse width modulation) Sepic (single ended primary inductance converter) converter, featuring soft commutation at zero-current (ZCS), using IGBTs (insulated gate bipolar transistors) as the power switches.
Canesin, C. A. [UNESP] +2 more
core +1 more source
Dead-Time Free Modulation Scheme for IM Drive System Fed by Voltage Source Inverter
EnergiesDuring the modulation process of the VSI motor drive system, the nonlinear errors caused by the dead-time and conduction voltage drop will increase the phase current harmonic distortion and the torque ripple. To solve this problem, a novel dead-time free
Qiwei Xu +4 more
doaj +1 more source
, 2018 Energy storage devices (ESD) like batteries and supercapacitors are necessary for standalone microgrids. These ESDs are interfaced to the DC grid using bidirectional DC-DC converters.
Agarwal, Vivek +3 more
core +1 more source
Zero-voltage and Zero-current Switching (ZVZCS) Full-Bridge Three-Level DC/DC Converter
, 2020 This paper proposes a new zero-voltage and zero-current switching (ZVZCS) full-bridge (FB) three-level DC/DC converter (TLDC) with the corresponding modulation strategy for the high-input-voltage and high-power applications.
Yanbo Wang +5 more
core +1 more source