Results 121 to 130 of about 16,769 (309)
The HVDC commutation failure mechanism impacted by harmonics and its suppression method
Frontiers in Energy ResearchHarmonics are an important cause of voltage distortion, and voltage reduction and voltage distortion are the main causes of commutation failure. But most of the current research studies on commutation failure are based on the drop in fundamental voltage ...
Guojiang Zhang +4 more
doaj +1 more source
Satisfiability of commutative vs. non-commutative CSPs
CoRRv2: the main result now omits one case, but also includes infinite-dimensional operators v3: more discussion and comments on related work; v4: full version of an ICALP 2025 ...
Bulatov, Andrei A., Živný, Stanislav
openaire +3 more sources
Proceedings of the American Mathematical Society, 1987 Let R R be a principal ideal ring and
openaire +1 more source
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
A history of the tithe system in England, 1690-1850 with special reference to Staffordshire [PDF]
This thesis attempts to provide a general history of the tithe system during the last century and a half of its existence in its old form. It attempts this partly through a detailed study of one county, thus enabling a wider variety of legal ...
Evans, Eric J.
core
, 2017 The mathematical model of the equivalent circuit of a brushless DC motor switches during the operation due to commutation. This issue causes a sudden ripple in the output torque, which is called commutation torque ripple. Brushless DC motor drives suffer
Ihsan Obayes Khudhair KHUDHAIR +3 more
core +1 more source
电力工程技术The evaluation and improvement methods for commutation failure resistance ability in multi-infeed direct current (MIDC) system are of great significance for testing commutation failure characteristics, addressing assessment challenges, and applying ...
Yechun XIN +5 more
doaj +1 more source
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
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
doaj +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