Results 11 to 20 of about 1,686,540 (264)
Optimal Asymmetric Duty Modulation for Dual Active Bridge Converters with DC Blocking Capacitors
Energies, 2023 Aiming at the optimization of current stress with low voltage ratio and full ZVS, a control method combining variable duty cycle and phase shift was proposed based on dual active bridge (DAB) converters with DC blocking capacitors.
Peng Dai +3 more
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Frontiers in Energy Research, 2023 The Buck circuit is a common topology in DC-DC converter. The existing control strategies have the advantages of short modulation time and high dynamic performance, but they also have the disadvantages of poor active modulation of the working mode of the
Ning Li +5 more
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Energy Reports, 2022 With the development of renewable energy, dual active half bridge (DAHB) has been widely used in renewable energy systems. For the purpose of reducing the damage caused by excessive current stress and improve the operation performance of the DAHB, this ...
Jianyu Zhang +5 more
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Current status of stress echocardiography [PDF]
Clinical Cardiology, 2000 AbstractStress echocardiography is a widely applied technique for the evaluation of individuals with known or suspected coronary artery disease. The technique combines echocardiographic imaging with exercise testing or pharmacologic stress. Advances in digital image acquisition and harmonic imaging have substantially improved the quality of ...
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Direct power control of dual-active-bridge dc–dc converters based on unified phase shift control
The Journal of Engineering, 2019 Dual-active-bridge (DAB) dc–dc converters are the important part of the transformerless electric traction drive system in railway application. Also the dynamic characteristic of DAB converters in the electric traction drive system is very significant ...
Feng An, Wensheng Song, Kexin Yang
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Optimization of current stress for Dual Active Bridge converter based on power compensation control
Energy Reports, 2023 With the rapid development and application of renewable energy, the advantages of DC distribution system are becoming more and more obvious. In the DC distribution system, the DC transformer is a component that connects different voltage DC bus and ...
Xinyu Cui, Feng Wang, Fang Zhuo
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Continuum mechanics, stresses, currents and electrodynamics [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2016 The Eulerian approach to continuum mechanics does not make use of a body manifold. Rather, all fields considered are defined on the space, or the space–time, manifolds. Sections of some vector bundle represent generalized velocities which need not be associated with the motion of material points.
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Geophysical Research Letters, 2018 We analyzed the current stress state on the Nojima Fault, the source of the 1995 Mw 6.9 Kobe (Japan) earthquake, using breakouts in a borehole through the fault to a depth of ~1,000 m in 2017. The main fault was found at a depth of 529.3 m, with a damage
Takafumi Nishiwaki +2 more
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The Distribution of Shearing Stresses in a Tidal Current [PDF]
Geophysical Journal International, 1959 Summary Observations were made in a tidal current off Red Wharf Bay, Anglesey, North Wales. The frictional stress at the bottom, Fb, was determined from the velocity profile within the first zm above the bottom and found to be related to the velocity at I m by a quadratic law, Fb = kpUl2, where K has the value 3-5 x 10-3. The corresponding value of the
Bowden, K. F. +2 more
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Current Methods to Detect Stressed Staphylococci
Journal of Food Protection, 1979 Many of the operations employed in food processing can sublethally damage staphylococci, temporarily rendering the cells incapable of growth on selective media commonly employed for their enumeration. Stressed staphylococci are, under the proper conditions, capable of recovery and subsequently normal growth, including enterotoxin production by some ...
Russell S, Flowers, Z John, Ordal
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