Improving PMUT Receive Sensitivity via DC Bias and Piezoelectric Composition [PDF]
Sensors, 2022 The receive sensitivity of lead zirconate titanate (PZT) piezoelectric micromachined ultrasound transducers (PMUTs) was improved by applying a DC bias during operation.
Christopher Cheng +6 more
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Validity Evaluation Method Based on Data Driving for On-Line Monitoring Data of Transformer under DC-Bias [PDF]
Sensors, 2020 The DC-bias monitoring device of a transformer is easily affected by external noise interference, equipment aging, and communication failure, which makes it difficult to guarantee the validity of monitoring data and causes great problems for future data ...
Yuanda He +3 more
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Optimal Strategy of Triple Phase Shift Transient DC Bias for Dual Active Bridge DC-DC Converter [PDF]
E3S Web of Conferences, 2020 Under the traditional phase shift control, dual active bridge DC-DC converter (DAB) has a transient bias on the inductance current when the phase shift ratio changes suddenly, which leads to increase in the current stress of switch tubes and even ...
Zhai Jingyu +3 more
doaj +2 more sources
Research on the Magnetostrictive Characteristics of Transformers under DC Bias
Energies, 2023 Direct current (DC) bias leads to increased vibration and noise in transformers. One of the main causes is the magnetostrictive effect of the transformer core.
Xiaoli Yan +4 more
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Characteristic Extraction and Assessment Methods for Transformers DC Bias Caused by Metro Stray Currents [PDF]
EntropyMetro stray currents flowing into transformer-neutral points cause the high neutral DC and a transformer to operate in the DC bias state.Because neutral DC caused by stray current varies with time, the neutral DC value cannot be used as the only ...
Aimin Wang +4 more
doaj +2 more sources
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
openaire +5 more sources
Dielectric behavior and phase transition in [111]-oriented PIN–PMN–PT single crystals under dc bias [PDF]
Journal of Advanced Dielectrics, 2014 Temperature and electric field dependences of the dielectric behavior and phase transition for [111]-oriented 0.23PIN–0.52PMN–0.25PT (PIN-PMN–0.25PT) and 0.24PIN–0.43PMN–0.33PT (PIN–PMN–0.33PT) single crystals were investigated over a temperature range ...
Yuhui Wan +6 more
doaj +2 more sources
AIP Advances, 2017 The iron core of large power transformer is mainly composed of electrical sheet steel, which is easily affected by temperature, harmonic, and DC bias. Therefore, it is necessary to measure the magnetic properties of electrical sheet steel under different
Dezhi Chen +3 more
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Energies, 2018 DC bias is a great threat to the safe operation of power transformers. This paper deals with a new vibration-based technique to diagnose DC bias in power transformers.
Xiaowen Wu +6 more
doaj +2 more sources
On the Implementation of a Compact Vertical DC Biasing Network with Significantly Reduced RF Components for Phase-Shifter-Free Beam Steering [PDF]
SensorsDense direct-current (DC) bias routing and numerous radio-frequency (RF) choke inductors pose major challenges to the practical implementation of phase-shifter-free beam steering using PIN-controlled phase switching.
Shuxin Zheng +3 more
doaj +2 more sources