Results 51 to 60 of about 1,230,070 (216)

Impact on the Harmonic Distortion of Low-Capacitance Static Compensator with Discontinuous Modulation

, 2022
Publisher Copyright: © 2022 IEEE.This paper investigates the quality of line-to-line voltages synthesized by a cascaded H-bridge static compensator, under continuous and discontinuous modulation strategies, when the capacitor voltage ripples are ...
Rodriguez, Ezequiel, Pou, Josep, Farivar, Glen G., Townsend, Christopher D., Leyva, Ramon, Ceballos, Salvador, Liu, Qingxiang   +6 more
core   +1 more source

A General Pulse Width Modulation Method for Zero-Voltage-Switching Active-clamping Three-phase Power Converters: Edge Aligned Pulse Width Modulation (EA-PWM)

IEEE Open Journal of Power Electronics, 2020
A general PWM method for soft-switching three-phase power converters-Edge Aligned PWM (EA-PWM) is proposed. It aligns all the high loss commutation instants of the converter bridges in a switching cycle at the same instant so that all the switches of the
Keyan Shi, Jinyi Deng, Dehong Xu
doaj   +1 more source

Elastic temporal waveguiding

New Journal of Physics, 2023
We provide a theoretical framework to mold time-modulated mechanical metamaterials with frequency conversion and wave-steering capabilities. To illustrate the concept, we initially focus on 1D lattices, whereby a sufficiently slow time-modulation of the ...
Jonatha Santini, Emanuele Riva
doaj   +1 more source

A Novel Filter Extracted Equivalent Control Based Fixed Frequency Sliding Mode Approach for Power Electronic Converters

Energies, 2019
The key issue in the implementation of the Sliding Mode Control (SMC) in analogue circuits and power electronic converters is its variable switching frequency.
Abdul Rehman Yasin, Muhammad Ashraf, Aamer Iqbal Bhatti   +2 more
doaj   +1 more source

Lifetime-Based Discontinuous PWM for Cascaded H-Bridge Converters

IEEE Access
The cascaded H-bridge (CHB) is an attractive converter topology because it can provide voltage and power scalability. However, due to the difference in electrical and thermal characteristics of power devices, the CHB can be composed of cells with unequal
Anas Ibrahim, Mohamed Salem, Tomonobu Senjyu, Soichiro Ueda, Dahaman Ishak, Mahmood Swadi   +5 more
doaj   +1 more source

Derivation of OCC Modulator for Grid-Tied Single-Stage Buck-Boost Inverter Operating in the Discontinuous Conduction Mode

Energies, 2020
This paper is concerned with the derivation of a one-cycle controller for driving a single-stage buck-boost DC-AC micro-inverter in grid-tied applications.
Ben Zhao, Yigeng Huangfu, Alexander Abramovitz   +2 more
doaj   +1 more source

Design of pulsewidth-modulation based sliding mode controllers for power converters in discontinuous conduction mode [PDF]

, 2006
This paper presents an approach of designing fixed-frequency pulsewidth-modulation based sliding mode controllers for power converters operating in the discontinuous conduction mode. The basic concept and design issues are discussed.
Tan, SC, Cid-Pastor, A, Siew-Chong Tan, Luis Martinez-Salamero, CidPastor, A, Y. M. Lai, Lai, YM, Chi K. Tse, Martinez-Salamero, L, Angel Cid-Pastor, MartinezSalamero, L, Tse, CK   +11 more
core   +1 more source

Optical tunable modulator based on graphene metamaterials at terahertz communication range

Results in Physics, 2020
An optical graphene-based external modulator has been proposed. Through the destructive interference of excited optical modes, an obvious plasmon-induced transparency effect can be achievable.
Biao Zeng, Hui Xu, Mingzhuo Zhao, Cuixiu Xiong, Chao Liu, Hongjian Li   +5 more
doaj   +1 more source

Global synchronous discontinuous pulse width modulation method with fast calculation capability for distributed three-phase inverters

Journal of Modern Power Systems and Clean Energy, 2016
When multiple distributed converters are integrated, the high frequency harmonics will randomly accumulate at the point of common coupling (PCC). This paper proposes a new fast global synchronous discontinuous pulse width modulation (GSDPWM) method of ...
Tao Xu, Ran Wei, Ke Zhou, Feng Gao
doaj   +1 more source

Modulations of the processing of line discontinuities under selective attention conditions? [PDF]

Perception & Psychophysics, 2002
We examined whether the processing of discontinuities involved in figure-ground segmentation, like line ends, can be modulated under selective attention conditions. Subjects decided whether a gap in collinear or parallel lines was located to the right or left. Two stimuli were displayed in immediate succession.
Anne, Giersch, Manfred, Fahle
openaire   +2 more sources