Results 61 to 70 of about 148,673 (288)
Analysis of Unidirectional Secondary Resonant Single Active Bridge DC–DC Converter
Energies, 2021 A compact and highly efficient unidirectional DC–DC converter is required as a battery charger for electrical vehicles, which will rapidly become widespread in the near future.
Cao Anh Tuan, Takaharu Takeshita
doaj +1 more source
Hybrid, multi-megawatt HVDC transformer topology comparison for future offshore wind farms [PDF]
, 2017 With the wind industry moving further offshore, High Voltage Direct Current (HVDC) transmission is becoming increasingly popular. HVDC transformer substations are not optimized for the offshore industry though, increasing costs and reducing redundancy. A
Abusara, Mohammad +5 more
core +1 more source
Hematopoietic (stem) cells—The elixir of life?
FEBS Letters, EarlyView.The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo +4 more
wiley +1 more source
Improved Multi-Conductor Transmission Line Modeling of Transformer to Study Frequency Response [PDF]
Iranian Journal of Electrical and Electronic EngineeringThis paper introduces an improved multi-conductor transmission line (MTL) model for transformers' high-frequency transient and frequency response analysis, overcoming limitations in traditional models that fail to capture complex electromagnetic ...
Ali Esmaeilvandi +2 more
doaj
Energies, 2021 Development of high-frequency-isolated DC-DC converters is underway for charging and discharging electric vehicle batteries. As a charger, a Single Active Bridge (SAB) converter, which is composed of a primary full-bridge converter, a high-frequency ...
Cao Anh Tuan, Takaharu Takeshita
doaj +1 more source
Developments for the high frequency power transformer design and implementation [PDF]
, 2003 The thesis considers design and manufacturing of ferrite based high frequency power transformers. The primary aim of the work was to study core and winding losses and in particular thermal modeling of high frequency power transformers and to determine ...
Sippola, Mika
core
Analysis and design of a modular multilevel converter with trapezoidal modulation for medium and high voltage DC-DC transformers [PDF]
, 2015 Conventional dual active bridge topologies provide galvanic isolation and soft-switching over a reasonable operating range without dedicated resonant circuits.
Adam, Grain P. +4 more
core +2 more sources
Transformation ray method: Controlling high frequency elastic waves (L) [PDF]
The Journal of the Acoustical Society of America, 2012 Elastic ray theory is a high frequency asymptotic approximation of solution of elastodynamic equation, and is widely used in seismology. In this paper, the form invariance under a general spatial mapping and high frequency wave control have been examined by transformation method.
Chang, Zheng +3 more
openaire +3 more sources
FEBS Letters, EarlyView.Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang +5 more
wiley +1 more source
Insulated electrocardiographic electrodes [PDF]
, 1975 An integrated system is disclosed including an insulated electrode and an impedance transformer which can be assembled in a small plastic housing and used for the acquisition of electrocardiographic data.
David, R. M., Portnoy, W. A.
core +1 more source