Results 91 to 100 of about 3,793 (268)
Reliability model and algorithm research on HVDC system and flexible HVDC system
The Journal of Engineering, 2019 The main difference between flexible high-voltage direct current (HVDC) system and the traditional HVDC system is that there are two control degrees of freedom in the flexible HVDC system that is the amplitude and phase angle of the output voltage. While,
Zhong Zheng +4 more
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Proceedings of the American Mathematical Society, 1987 Let R R be a principal ideal ring and
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Corporate Social Responsibility and Environmental Management, EarlyView.ABSTRACT The present study seeks to advance the understanding of the determinants of occupational injuries, thereby enhancing both academic knowledge and decision‐making in the management and implementation of occupational health and safety measures.
Rosa María Cañaveras Perea +2 more
wiley +1 more source
The Journal of Engineering, 2019 In order to reduce the torque ripple of SR motor drive, this work proposes a new methodology based on the converter, controller, and motor modelling, associated with a genetic algorithm optimisation model which uses the electromagnetic vibration data to ...
Daniel A.P. Correa +4 more
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Corporate Social Responsibility and Environmental Management, EarlyView.ABSTRACT Employee sustainability teams—groups collaborating continuously and voluntarily on sustainability initiatives—can serve as a bottom‐up driver for organizational change. Despite their potential, however, their role and contributions are underexplored. To fill this gap, our multi‐case study examines 59 projects by 13 teams across three companies
Jennifer Adolph +3 more
wiley +1 more source
Research on commutation failure of Jinsu DC transmission project caused by a complex AC fault
The Journal of Engineering, 2019 Commutation failure is an important factor on safe and stable operation of the receiving-end power grid for high voltage direct current (HVDC) project. A commutation failure event in Jinsu DC transmission project caused by a complex AC failure was taken ...
Wei Peng +3 more
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Kinetic Contribution to the Arbitrary Order Odd Frequency Moments of the Dynamic Structure Factor
Contributions to Plasma Physics, EarlyView.ABSTRACT An exact expression is derived for the kinetic contribution to the odd (arbitrary order) frequency moments of the dynamic structure factor via a finite summation that features averages of even (all lower orders) powers of the momentum over the exact momentum distribution.
Panagiotis Tolias +2 more
wiley +1 more source
Stability Bounds for the Generalized Kadanoff‐Baym Ansatz in the Holstein Dimer
Contributions to Plasma Physics, EarlyView.ABSTRACT Predicting real‐time dynamics in correlated systems is demanding: exact two‐time Green's function methods are accurate but often too costly, while the Generalized Kadanoff‐Baym Ansatz (GKBA) offers time‐linear propagation at the risk of uncontrolled behavior. We examine when and why GKBA fails in a minimal yet informative setting, the Holstein
Oscar Moreno Segura +2 more
wiley +1 more source
Field–Circuit Model of a Novel PMDC Motor with Rectangular NdFeB Permanent Magnets in Ansys Maxwell
EnergiesAccurate analysis of commutation phenomena in permanent magnet DC (PMDC) motors requires simultaneous consideration of electromagnetic field distribution and armature circuit dynamics.
Paweł Strączyński +4 more
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Deep Underground Science and Engineering, EarlyView.This paper explores how climate‐resilient technologies, such as smart grids, digital twins, and self‐healing materials, can enhance urban resilience. It highlights the urgent need for proactive planning, public‐private collaboration, and data‐driven innovation to future‐proof underground infrastructure amid accelerating climate and urban pressures ...
Kai Chen Goh +12 more
wiley +1 more source