Results 11 to 20 of about 16,769 (309)
Barekeng, 2023 The commutation matrix is a matrix that transforms any vec matrix , to vec transpose . In this article, three definitions of the commutation matrix are presented in different ways. It is shown that these three definitions are equivalent.
Yanita Yanita, Lyra Yulianti
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Procedure analysis of UHVDC commutation failure
The Journal of Engineering, 2019 There may be a commutation failure during a fault or start-up of the UHVDC inverter side. The law of commutation failure process in UHVDC converter is studied here. First, the cause of inverter commutation failures is briefly introduced.
Chenqing Wang +4 more
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An Evaluation Method for Commutation Failure Caused by Waveform Distortion [PDF]
E3S Web of Conferences, 2021 Commutation failure is a key issue that affects the safe operation of HVDC transmission systems. Scholars at home and abroad have conducted research on the mechanism, evaluation indicators, and control strategies of commutation failure.
Zhou Hao, Su Can, Zhou Hao
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Proposed Commutation Method for Performance Improvement of Brushless DC Motor
Energies, 2021 This study focused on the efficiency improvement and acoustic noise reduction of brushless DC (BLDC) motors by reducing current harmonics using a novel BLDC commutation method. To achieve these goals, we designed an improved 150° commutation method for a
Chang-Sung Jin +3 more
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Research & Application of Commutation Improvement on DC Traction Motor
Kongzhi Yu Xinxi Jishu, 2010 Taking ZD114-A traction motor with commutation fault as an example, it introduces the commutation theory of DC traction motor and the factors which influence the commutation of the motor, presents measurements to improve commutation performance. The test
朱利湘
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Sensors, 2021 Due to the COVID-19 virus being highly transmittable, frequently cleaning and disinfecting facilities is common guidance in public places. However, the more often the environment is cleaned, the higher the risk of cleaning staff getting infected ...
Shih-Ping Huang +9 more
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Commutative–non-commutative dualities [PDF]
Canadian Journal of Physics, 2020 We show that it is in principle possible to construct dualities between commutative and non-commutative theories in a systematic way. This construction exploits a generalization of the exact renormalization group equation (ERG). We apply this to the simple case of the Landau problem and then generalize it to the free and interacting non-canonical ...
Scholtz, F.G. +2 more
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Sensors, 2022 Determining the direction-of-arrival (DOA) of any signal of interest has long been of great interest to the wireless localization research community for military and civilian applications.
Chien-Bang Chen +6 more
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Range-Extension Algorithms and Strategies for TDOA Ultra-Wideband Positioning System
Sensors, 2023 The Internet of Things (IoT) for smart industry requires the surveillance and management of people and objects. The ultra-wideband positioning system is an attractive solution for achieving centimeter-level accuracy in target location. While many studies
Shih-Ping Huang +7 more
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Mathematics, 2021 The model of a fully available group of servers with a Poisson flow of primary calls and the possibility of losses before and after occupying a free server is considered.
Sergey Stepanov, Mikhail Stepanov
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