Results 1 to 10 of about 122,391 (218)
Research on Transient DC Bias Analysis and Suppression in EPS DAB DC-DC Converter [PDF]
IEEE Access, 2020 During excitation and demagnetization phase for the superconducting magnet, in dual-active-bridge (DAB) converter based power supply, a dc bias may occur in high-frequency transformer and thus lead to the faults. In this paper, an improved transient extend-phase-shift (TEPS) control strategy is proposed to suppress the dc bias without any additional ...
Tianli Dai +6 more
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Transient DC bias suppression of three‐port isolated DC–DC converter [PDF]
IET Power Electronics, 2020 Three‐port isolated dc–dc converter, as an active exploration and trial of photovoltaic access to dc distribution system, has the advantages of superior control flexibility and high reliability. Due to the changes in the phase‐shift (PS) angle, the conventional PS control method cause transient dc bias in inductor current and magnetisation current ...
Chunming Tu +4 more
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Transmitting CMUT Arrays without a DC Bias [PDF]
2019 IEEE International Ultrasonics Symposium (IUS), 2019 This study focuses on design, simulation, fabrication and measurement of transmitting CMUT arrays with unbiased mode of operation. We presented a design procedure considering the radiation pattern, Rayleigh distance and the parameters of the large signal equivalent circuit, which can be applied for different operation frequencies and applications ...
Enhoş, Kerem +4 more
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DC-Bias for Optical OFDM in Visible Light Communications [PDF]
IEEE Access, 2019 The requirement of a DC-bias is known to make DC-biased optical orthogonal frequency division multiplexing (DCO-OFDM) less energy efficient. This can be improved by asymmetrically clipped optical OFDM (ACO-OFDM), pulse amplitude modulated OFDM (PAM-OFDM) or Flip-OFDM, but these variants use the bandwidth inefficiently.
Xiong Deng +3 more
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Stationary Hamiltonian transport with dc bias [PDF]
Europhysics Letters (EPL), 2006 The dynamics of a particle in a symmetric periodic potential under the influence of a time-periodic field is characterized by a mixed phase space with regular and chaotic components. An additional external dc bias transforms the chaotic manifold into a domain with unbounded acceleration.
Denisov, Sergey Vadimovich +2 more
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Analysis of switching effects in DC-DC converters via bias point computation [PDF]
2007 18th European Conference on Circuit Theory and Design, 2007 The paper describes a method for finding steady states in switched DC-DC converters, which is based on the SPICE bias point computation rather than a time-consuming transient analysis. The switched converter is modeled by unified substitutive circuits whose DC analysis determines directly the limit values of steady-state circuit variables at time ...
Dalibor Biolek +2 more
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Prediction Method of DC Bias in DC-DC Dual-Active-Bridge Converter
CPSS Transactions on Power Electronics and Applications, 2019 The dual-active-bridge (DAB) converter attracts more and more attentions due to its ability of bidirectional power transmission and high conversion efficiency. The adoption of high-frequency transformer provides galvanic isolation, but also brings the possibility of dc bias.
Liangcai Shu, Wu Chen, Zhanfei Song
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DC-Bias Characteristics of Magnetic Materials for a Linear DC Motor
Journal of the Magnetics Society of Japan, 1997 This paper describes the dc-bias characteristics of five magnetic materials used in a linear dc motor (LDM): three block materials−carbon steel (S45C), pure iron (SUYB1) and cast iron (FCD450), and two laminated materials− non-oriented silicon steel sheets (35H440) and oriented sili-con steel sheets (23ZH100). The following conclusions are reached: (1)
Miyashita, T. +5 more
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FEBS Open Bio, EarlyView.The dual roles of CC and CXC chemokines in distinguishing active, latent, and subclinical tuberculosis were reviewed, along with an evaluation of their potential as diagnostic biomarkers and therapeutic targets to advance precision medicine in tuberculosis management. The graphical abstract was generated with AI assistance (Gemini 3.0).
Xuying Yin, Dangsheng Xiao, Jiezuan Yang
wiley +1 more source
Cutaneous Melanoma Drives Metabolic Changes in the Aged Bone Marrow Immune Microenvironment
Aging and Cancer, EarlyView.Melanoma, the deadliest form of skin cancer, increasingly affects older adults. Our study reveals that melanoma induces changes in iron and lipid levels in the bone marrow, impacting immune cell populations and increasing susceptibility to ferroptosis.
Alexis E. Carey +12 more
wiley +1 more source