Results 11 to 20 of about 5,275,359 (268)

A Survey on Multi-Active Bridge DC-DC Converters: Power Flow Decoupling Techniques, Applications, and Challenges [PDF]

, 2023
Multi-port DC-DC converters are a promising solution for a wide range of applications involving multiple DC sources, storage elements, and loads. Multi-active bridge (MAB) converters have attracted the interest of researchers over the past two decades ...
Watson, Alan J., Peyman Koohi, Batista Soeiro, Thiago; id_orcid, Koohi, Peyman, Wheeler, Patrick W., Jon C. Clare, Clare, Jon C., Thiago Batista Soeiro, Batista Soeiro, Thiago, Patrick W. Wheeler, Alan J. Watson   +10 more
core   +1 more source

Determination of protection system requirements for DC UAV electrical power networks for enhanced capability and survivability [PDF]

, 2011
A growing number of designs of future Unmanned Aerial Vehicle (UAV) applications utilise dc for the primary power distribution method. Such systems typically employ large numbers of power electronic converters as interfaces for novel loads and generators.
Burt, Graeme, Norman, Patrick, Galloway, Stuart, Fletcher, Steven   +3 more
core   +4 more sources

Study of the offshore wind farm based multi-terminal DC system and the application of high power DC-DC converters [PDF]

, 2019
Wind power is a type of renewable energy source which has vast potential for further development as it is featured as pollution-free and plentiful. However, wind power turbines also have negative consequences for the environment (in particular visual ...
Rong, Xiaoyun
core   +3 more sources

Five-Megahertz PWM-Controlled Current-Mode Resonant DC–DC Step-Down Converter Using GaN-HEMTs [PDF]

, 2015
High power efficiency and high power density are required in regulated isolated dc-dc converters. In this paper, a novel pulsewidth modulation (PWM) control method that is suitable for an isolated current-mode resonant dc-dc converter operated at a ...
Matsuura, Ken, Tomioka, Satoshi, Yanagi, Hiroshige, Ishizuka, Yoichi, Ninomiya, Tamotsu, Hariya, Akinori   +5 more
core   +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