Results 71 to 80 of about 41,316 (141)

900 V GaN-based sine-wave inverters for three-phase industrial applications

The Journal of Engineering, 2019
GaN devices are gradually getting attention within the industry along with SiC as a potential wide bandgap device. At present, there are almost no high-voltage GaN devices with voltage >650 V, which makes an inverter design difficult for a three-phase ...
Nilanjan Mukherjee, Johannes Fuerst, Fabian Diepold, Fernando Aguilar Vega   +3 more
doaj   +1 more source

Research Progress on Electrical Insulation Under Superimposed Voltage With High‐Frequency Harmonics in New‐Type Power Systems

High Voltage, EarlyView.
ABSTRACT A new‐type power system serves as a critical technical support for the integration of new energy, and its secure and stable operation is of great importance. However, the extensive utilisation of power electronic devices leads to power equipment insulation being subjected to electrical stresses of high‐frequency harmonics, which can easily ...
Shengtao Li, Chuang Zhang, Weiwang Wang, Yuanwei Zhu, Liuqing Yang   +4 more
wiley   +1 more source

Advances in Polymeric Insulating Materials: Global Progress in These 10 Years

High Voltage, EarlyView.
ABSTRACT This journal, High Voltage, celebrates its 10th anniversary in 2026. To commemorate this significant milestone, this comprehensive special review article showcases the latest global research progress and cutting‐edge advancements in polymeric insulating materials, a critical component that underpins high‐voltage systems and is vital to modern ...
Yoshimichi Ohki, George Chen, Davide Fabiani, Reimund Gerhard, Mona Ghassemi, Stanislaw Gubanski, Shengtao Li, Ronald Plath, Roger Schurch, Yuriy Serdyuk, Gilbert Teyssedre   +10 more
wiley   +1 more source

Dual‐mode control and switching control strategy of microgrid for power battery formation and grading testing system

IET Renewable Power Generation
To address the stability issues of the microgrid system for power battery formation and grading testing systems in scenarios involving multiple parallel converters, this paper proposes a hybrid dual‐mode control strategy combining grid‐following and grid‐
Di Xie, Liangliang Wang, Tao Jiang, Longyun Kang, Shoumo Wang   +4 more
doaj   +1 more source

Natural variation in the GNH1 promoter enhances plant height and grain yield in rice

Journal of Integrative Plant Biology, EarlyView.
Natural variation in the GRAIN NUMBER AND PLANT HEIGHT 1 (GNH1) promoter alleviates repression by the C2H2‐type transcription factor ZFP36, upregulating GNH1 expression and promoting auxin accumulation, thereby increasing rice plant height and grain yield. This elite allele serves as a valuable genetic resource for molecular breeding of high‐yield rice.
Hongwei Xing, Huan Wang, Sheng Wu, Yuanjie Li, Kun Zhang, Chuanqing Sun, Hongying Sun   +6 more
wiley   +1 more source

On abolishing symmetry requirements in the formulation of a five-level selective harmonic elimination pulse-width modulation technique [PDF]

, 2006
Selective harmonic elimination pulse width modulation (SHE-PWM) techniques offer a tight control of the harmonic spectrum of a given voltage waveform generated by a power electronic converter along with a low number of switching transitions.
Rao, M.V., Dahidah, M.S.A., Agelidis, V.G.   +2 more
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Speed control with low armature loss for very small sensorless brushed DC motors [PDF]

, 2009
A method for speed control of brushed dc motors is presented. It is particularly applicable to motors with armatures of less than 1 cm3. Motors with very small armatures are difficult to control using the usual pulsewidth-modulation (PWM) approach and ...
Scott, Jonathan B., McLeish, J., Round, W. Howell   +2 more
core   +1 more source

A modified control strategy for LCC with IGCT‐based full‐bridge submodules to solve the commutation failure issues

IET Power Electronics
To solve the commutation failure (CF) issues in high voltage direct current (HVDC) transmission systems based on line commutated converter (LCC), this paper proposes a hybrid solution combining the LCC inverter with the continuously controlled IGCT‐based
Yindi Liu, Xiangjun Zeng, Yiping Luo, Haitao Qu   +3 more
doaj   +1 more source

Sequential Outlier Detection in Nonstationary Time Series

Journal of Time Series Analysis, EarlyView.
ABSTRACT A novel method for sequential outlier detection in nonstationary time series is proposed. The method tests the null hypothesis of “no outlier” at each time point, addressing the multiple testing problem by bounding the error probability of successive tests, using extreme‐value theory. The asymptotic properties of the test statistic are studied
Florian Heinrichs, Patrick Bastian, Holger Dette   +2 more
wiley   +1 more source

Nova família de conversores CC-CC PWM não isolados utilizando células de comutação de três estados [PDF]

, 2001
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Tecnológico. Programa de Pós-Graduação em Engenharia ElétricaEste trabalho apresenta uma nova família de conversores CC-CC PWM não isolados.
Bascopé, Grover Victor Torrico
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