Results 11 to 20 of about 495,795 (215)

Improved Feedback Quantizer with Discrete Space Vector [PDF]

Sensors
The use of advanced modulation and control schemes for power converters, such as a Feedback Quantizer and Predictive Control, is widely studied in the literature. This work focuses on improving the closed-loop modulation scheme called Feedback Quantizer,
Matías Veillon, Eduardo Espinosa, Pedro Melin, Galina Mirzaeva, Marco Rivera, Carlos R. Baier, Roberto O. Ramirez   +6 more
doaj   +2 more sources

Storm time neutral density assimilation in the thermosphere ionosphere with TIDA

Journal of Space Weather and Space Climate, 2022
To improve Thermosphere–Ionosphere modeling during disturbed conditions, data assimilation schemes that can account for the large and fast-moving gradients moving through the modeled domain are necessary.
Codrescu Mihail V., Codrescu Stefan M., Fedrizzi Mariangel   +2 more
doaj   +1 more source

Coordinated Control of DFIG Converters to Comply with Reactive Current Requirements in Emerging Grid Codes

Journal of Modern Power Systems and Clean Energy, 2022
The doubly-fed induction generator (DFIG) is considered to provide a low-reactance path in the negative-sequence system and naturally comply with requirements on the negative-sequence reactive current in emerging grid codes.
Yuanzhu Chang, Ilhan Kocar, Jiabing Hu, Ulas Karaagac, Ka Wing Chan, Jean Mahseredjian   +5 more
doaj   +1 more source

A Common-Mode Voltage Reduction PWM Strategy for Three-Phase Quasi-Z-Source Inverter With Optimized Switching Losses

IEEE Access, 2023
The application of the Z-source/quasi-Z-source inverter exacerbates the hazard of common mode voltage in motor drives or photovoltaic systems. The existing reduced common-mode voltage pulse width modulation (RCMV-PWM) technique applied to the Z-source ...
Yizhan Jiang, Jingwei Zhang, Qiang Wang, Fengyou He, Weifeng Zhang   +4 more
doaj   +1 more source

A New Decentralized Space Vector PWM Method for Multilevel Single-Phase Full Bridge Converters

Energies, 2022
This paper proposes a decentralized control structure and method for a multilevel single-phase power converter using space vector pulse width modulation (SVPWM).
Phu Cong Nguyen, Quoc Dung Phan, Dinh Tuyen Nguyen   +2 more
doaj   +1 more source

State and Space Vectors of the 5-Phase 2-Level VSI

Energies, 2020
The paper proposes a general description system of the five-phase two-level inverter. The two base methods are presented and discussed. The first one is based on the standard space vector transformation, while the other uses state vectors which enable ...
Jan Iwaszkiewicz, Adam Muc
doaj   +1 more source

A Low Common-Mode SVPWM for Two-Level Three-Phase Voltage Source Inverters

Energies, 2023
In order to reduce the common-mode voltage (CMV) generated by the use of space vector pulse width modulation (SVPWM) in two-level three-phase voltage source inverters, a low common-mode SVPWM method is proposed.
Jian Zheng, Cunxing Peng, Kaihui Zhao, Mingcheng Lyu   +3 more
doaj   +1 more source

A Novel Space Vector Modulation Scheme for a 10-Switch Converter

Energies, 2020
Three-level converters have drawn extensive attention due to their ability to deliver high-quality power. High semiconductor count is the main drawback of three-level converters.
Parviz Najafi, Abbas Houshmand Viki, Mahdi Shahparasti, S. Sajjad Seyedalipour, Edris Pouresmaeil   +4 more
doaj   +1 more source

A New Concept of PWM Duty Cycle Computation Using the Barycentric Coordinates in a Three–Dimensional Voltage Vectors Arrangement

IEEE Access, 2020
The paper presents a novel approach to the Pulse Width Modulation (PWM) duty cycle computing for complex or irregular voltage vector arrangements in the two (2D) and three-dimensional (3D) Cartesian coordinate systems.
Pawel Szczepankowski, Nikolai Poliakov, Denis Vertegel, Krzysztof Jakub Szwarc, Ryszard Strzelecki   +4 more
doaj   +1 more source

Solving Three Conjectures about Neutrosophic Quadruple Vector Spaces [PDF]

Neutrosophic Sets and Systems, 2020
The aim of this paper is to answer Smarandache conjectures about neutrosophic quadruple vector spaces. This paper depends on the concept of weak n-refined neutrosophic vector space to prove that an NQ vector space V defined over the field F is isomorphic.
Hasan Sankari, Mohammad Abobala
doaj   +1 more source