Results 171 to 180 of about 1,230,070 (216)
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Advanced Discontinuous Modulation for Thermally Compensated Modular Smart Transformers
IEEE transactions on power electronics, 2020Smart transformers (STs) are challenged by high-reliability requirements. Particularly, modular STs consist of a large number of power semiconductors, and unevenly distributed thermal stress results in different remaining useful lifetimes of the devices ...
Youngjong Ko +3 more
semanticscholar +1 more source
IEEE transactions on energy conversion, 2023
This paper presents a simple discontinuous pulse width modulation (DPWM) switching scheme to reduce the switching loss of a single DC-link dual two-level inverter fed an open-end winding (OW) induction motor (IM).
Kibok Lee, Yongsu Han
semanticscholar +1 more source
This paper presents a simple discontinuous pulse width modulation (DPWM) switching scheme to reduce the switching loss of a single DC-link dual two-level inverter fed an open-end winding (OW) induction motor (IM).
Kibok Lee, Yongsu Han
semanticscholar +1 more source
Discontinuous space vector modulation technique for motor supply
2011 IEEE EUROCON - International Conference on Computer as a Tool, 2011The paper presents a simulation study of a space vector modulation inverter that supplies an alternating current motor drive with low switching losses. A new technique of the reduced number of switchings within the modulating interval is proposed. Simulation results are based on the theoretical explanation.
Valery Vodovozov, Mikhail Egorov
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IEEE Transactions on Industrial Electronics, 2010 In this paper, the application of a cascaded multilevel inverter as a dynamic voltage restorer (DVR) is investigated. Two discontinuous multilevel space vector modulation (SVM) techniques are implemented for DVR control and are shown to reduce inverter ...
Ahmed Massoud +2 more
exaly +2 more sources
IEEE transactions on power electronics, 2020
Reliability and availability are crucial in smart transformers (ST), and power routing in a modular design can reduce thermal stress of power semiconductors and thereby prevent failures.
Youngjong Ko +3 more
semanticscholar +1 more source
Reliability and availability are crucial in smart transformers (ST), and power routing in a modular design can reduce thermal stress of power semiconductors and thereby prevent failures.
Youngjong Ko +3 more
semanticscholar +1 more source
2016
This chapter lists modules that were important for several projects in the past, but which are no longer being developed.
Nagel, Kai, Horni, Andreas
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This chapter lists modules that were important for several projects in the past, but which are no longer being developed.
Nagel, Kai, Horni, Andreas
openaire +1 more source
Creation of discontinuities in a frequency-modulated ionisation wave
Journal of Physics D: Applied Physics, 1978Motion of the wavecrests is calculated for the case when a frequency modulation has been imposed locally on a coherent ionisation wave with saturated (large) amplitude. Different possibilities of continuation of the solution into the region of multivaluedness are discussed and compared with the experimentally observed pattern.
L Pekarek, J Beranek, J Krasa
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Elimination of heterojunction band discontinuities by modulation doping
Applied Physics Letters, 1992Conduction- or valence-band discontinuities occurring at the junction of two heterogeneous semiconductors can be eliminated by appropriate doping of the interfacial region. We show by analytic and self-consistent calculations that simultaneous modulation doping and parabolic compositional grading result in flat band-edge potentials.
E. F. Schubert +5 more
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Interleaved PWM with discontinuous space-vector modulation
IEEE Transactions on Power Electronics, 1999This paper describes the effect of interleaved discontinuous space-vector modulation (SVM) in paralleled three-phase systems using three-phase pulsewidth modulation (PWM) rectifiers as an example. At the discontinuous point of the SVM, the phase shift between the switching signals of the paralleled modules generates a zero-sequence excitation to the ...
null Kun Xing +4 more
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IEEE Journal of Emerging and Selected Topics in Power Electronics
Single-stage inverters, such as the proposed differentially structured flyback inverter (DSFI), offer many features, including reduced component count, voltage step-up/step-down capability, minimized cost and footprint, as well as high power density ...
A. I. M. Ali +6 more
semanticscholar +1 more source
Single-stage inverters, such as the proposed differentially structured flyback inverter (DSFI), offer many features, including reduced component count, voltage step-up/step-down capability, minimized cost and footprint, as well as high power density ...
A. I. M. Ali +6 more
semanticscholar +1 more source