Results 21 to 30 of about 5,275,258 (209)

A new modulation strategy on isolated battery charger with wide input and output voltage range

IET Power Electronics, 2023
A new wide voltage operation range isolated battery charger, which is composed of an asymmetric T‐type AC–DC power rectifier and a modified re‐configurable half bridge DC–DC power converter, is proposed in this paper.
Hurng‐Liahng Jou, Fu‐Zen Chen, Jinn‐Chang Wu, Chih‐Chun Chiang, Li‐Wen Su, Wei‐Ting Chen   +5 more
doaj   +1 more source

A cryogenic dc-dc power converter for a 100kW synchronous HTS generator at liquid nitrogen temperatures [PDF]

, 2012
A dc-dc converter has been developed for retrofitting inside the vacuum space of the HTS rotor of a synchronous generator. The heavy copper sections of the current leads used for energising the HTS field winding were replaced by cryogenic power ...
Bailey, W.O.S., Yang, Y., Jia, C., Forsyth, A.   +3 more
core   +2 more sources

Optimizing the roles of unit and non-unit protection methods within DC microgrids [PDF]

, 2012
The characteristic behavior of physically compact, multiterminal dc networks under electrical fault conditions can produce demanding protection requirements.
Burt, Graeme, Norman, Patrick, Galloway, Stuart, Fletcher, Steven, Crolla, Paul   +4 more
core   +4 more sources

ENHANCING STABILITY AND REGULATION OF OUTPUT VOLTAGE IN BOOST CONVERTERS WITH LEARNING SLIDING MODE CONTROL

Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ
Although DC to DC convertors might be considered as the most widely used circuits in power electronic, where a specific DC output voltage must be stabilized to a specific desired level, yet theses circuits unfortunately exhibit a nonlinear behavior.
Abdal-Razak Shehab Hadi, Sajad Abaas, Ameen M. Al-Modaffer, Riyadh Hassan Mawat   +3 more
doaj   +1 more source

Performance improvement of a zero‐voltage switching interleaved high step‐up DC–DC converter with low‐voltage stresses

IET Power Electronics, 2023
This paper proposes a novel interleaved ultra‐large gain zero‐voltage switching (ZVS) DC–DC converter for renewable energy systems. By using coupled inductor (CI) and built‐in transformer (BIT), a high‐voltage gain is achieved.
Tohid Nouri
doaj   +1 more source

AC-DC Power System Analysis

, 1998
The following topics are dealt with: AC-DC converter; power flow solution; harmonic solution; three-phase power and harmonic flow; electromagnetic transient simulation; electromechanical stability and transient converter ...
Bruce Smith, Smith, Bruce. C., Arrillaga, Jos, Jos Arillaga   +3 more
core   +1 more source

Heterotropic regulation and negative homotropic cooperativity

FEBS Open Bio, EarlyView.
We identified a structural module common to some proteins that couple negative cooperativity with heterotropic regulation, two features that rarely coexist. These proteins are ring‐like and present an ordered asymmetry whereby noncontacting subunits are symmetric, and their tertiary structure differs from that of contacting subunits.
Veronica Morea, Francesco Angelucci, Federica Arnesano, Gianmarco Pascarella, Patrizio Di Micco, Andrea Bellelli   +5 more
wiley   +1 more source

Active elimination of DC bias current of a SiC based dual active bridge by controlling the dead time period

IET Power Electronics
Dual active bridge (DAB) is an isolated DC‐DC converter gaining wider attention in power electronics applications. The high frequency (HF) transformer is an integral part of the DAB which is prone to saturation.
Ganesan Perumal, Kamalesh Hatua, Manju Rajagopal   +2 more
doaj   +1 more source

Deadbeat control of power leveling unit with bidirectional buck/boost DC/DC converter [PDF]

, 2014
As a distributed generation system increases, a stable power supply becomes difficult. Thus control of power leveling (PL) unit is required to maintain the balance of power flow for irregular power generation. The unit is required to respond to change of
Shin-ichi Hamasaki, Ryosuke Mukai, Yano, Yoshihiro, Mukai, Ryosuke, Tsuji, Mineo, Yoshihiro Yano, Hamasaki, Shin-ichi, Mineo Tsuji   +7 more
core   +1 more source

Characterizing Cutaneous α‐Synuclein Deposition and Seeding Activity in Parkinson's Disease Subtypes

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Cutaneous phosphorylated α‐synuclein (p‐syn) and α‐synuclein seeding activity are promising biomarkers for Parkinson's disease (PD), but their clinical value remains uncertain due to disease heterogeneity. This study evaluates these two biomarkers in PD patients to inform phenotype‐specific diagnosis and disease severity assessment ...
Yuting Jin, Tianyuan Yang, Minglei Liu, Haiyang Luo, Jing Yuan, Ke Zhang, Xinsheng Han, Jing Yang, Yuming Xu   +8 more
wiley   +1 more source