Results 161 to 170 of about 1,230,070 (216)

Study and Comparison of Discontinuous Modulation for Modular Multilevel Converters in Motor Drive Applications

IEEE Transactions on Industrial Electronics, 2019
Discontinuous modulation applied to modular multilevel converters is an effective method for reducing the capacitor voltage ripples. In this paper, the discontinuous modulation is adapted and used in a motor drive application. For proper operation of the
Ricard Picas, Jordi Zaragoza, Josep Pou   +2 more
exaly   +2 more sources

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On the Analysis of Quasi-Discontinuous Modulations for Dual-Active-Bridge

IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society, 2021
The dual-active-bridge is a DC/DC converter that is widely used due to its design flexibility. Diverse modulations have been used to extend the soft-switching range, reducing the RMS current or improve the overall performance. In this paper, the analysis of different quasi-discontinuous conduction modulations for the DAB converter is made. The analysis
Pablo Guzmán, Nimrod Vázquez, Marco Liserre, Rodolfo Orosco, Jaime Arau, Claudia Hernández   +5 more
openaire   +1 more source

Investigation on the Discontinuous Modulation Method of Full-Bridge Modular Multilevel Converters

International Conference Renewable Energy and Power Engineering, 2022
As a new type of multilevel converter topology, the Modular Multilevel Converter (MMC) has the advantages of high equivalent switching frequency, strong scalability and flexible control in recent years, thus has attracted more and more attention.
Jinke Li, Yun Yang, Yonggao Guan, Shirui Feng, Yue He, Qiyuan Tian, Yucheng Wu, L. Jing   +7 more
semanticscholar   +1 more source

Three-Phase Reference Voltage Independent Control-Based Discontinuous Modulation Algorithm for Open-End Winding PMSM Fed by Dual Three-Level Inverters With Common DC Bus

IEEE transactions on power electronics, 2022
This article proposes a novel modulation strategy forthe open-end winding permanent magnet synchronous motor (OEW-PMSM) fed by dual three-level inverters with common dc bus.
Liping Zhong, Song Hu
semanticscholar   +1 more source

A Direct Digital Technique Implementation of General Discontinuous Pulse Width Modulation Strategy

IEEE Transactions on Industrial Electronics, 2011
International audienceThis paper presents direct digital technique-generalized discontinuous pulse width modulation (PWM) - a new implementation method for an optimal discontinuous PWM (DPWM) in terms of switching losses of the inverter on an embedded ...
Nicolas Patin
exaly   +2 more sources

Discontinuous Modulation of Cascaded H-Bridge StatComs Considering Capacitor Voltage Oscillations

European Conference on Cognitive Ergonomics, 2021
This paper formulates a discontinuous modulation (DM) technique for cascaded H-bridge (CHB) static compensators (StatComs) with star configuration. In the CHB StatComs, capacitor voltage (CV) oscillations cannot be disregarded when using relatively small
Qingxiang Liu, Ezequiel Rodriguez, G. Farivar, J. Pou, S. Ceballos, C. Townsend, R. Leyva   +6 more
semanticscholar   +1 more source

Power Loss and Thermal Impedance Modeling of Multilevel Power Converter With Discontinuous Modulation

IEEE transactions on energy conversion, 2021
The hard switching operation of the insulated gate bipolar transistor (IGBT)-based multilevel converters (MLCs) in the transformer less direct integration of renewable power plants produces a considerable amount of switching and conduction power loss ...
Md. Mazharul Islam, Md. Ashib Rahman, Md. Rabiul Islam   +2 more
semanticscholar   +1 more source

Closed-Loop Discontinuous Modulation Technique for Capacitor Voltage Ripples and Switching Losses Reduction in Modular Multilevel Converters

IEEE Transactions on Power Electronics, 2015
In this paper, a new discontinuous modulation technique is presented for the operation of the modular multilevel converter (MMC). The modulation technique is based on adding a zero sequence to the original modulation signals so that the MMC arms are ...
Ricard Picas, Salvador Ceballos, Josep Pou   +2 more
exaly   +2 more sources

Integration of vision modules and labeling of surface discontinuities

IEEE Transactions on Systems, Man, and Cybernetics, 1989
It is assumed that a major goal of the early vision modules and their integration is to deliver a cartoon of the discontinuities in the scene and to label them in terms of their physical origin. The output of each of the vision modules is noisy, possibly sparse, and sometimes not unique. The authors suggest the use of a coupled Markov random field (MRF)
Edward B. Gamble, Davi Geiger, Tomaso A. Poggio, Daphna Weinshall   +3 more
openaire   +1 more source

Temporal-Discontinuity Detection with Contrast-Modulated Gratings

Perception, 1995
Three experiments on temporal-discontinuity detection were carried out. In experiment 1, temporal-discontinuity thresholds were measured for sinusoidal gratings by the use of the double-staircase method. A sinusoidal grating was presented twice successively. The subject judged whether or not an interval was present. The temporal-discontinuity threshold
S, Ichihara, K, Susami
openaire   +2 more sources