Results 71 to 80 of about 1,111,087 (188)

Circulating current suppression strategy for VSG parallel system with island microgrid

Diance yu yibiao
In low-voltage microgrid, the space span between distributed generators is large, and the difference of line impedance has a great impact on the current sharing effect of inverter parallel system controlled by traditional virtual synchronous generator ...
NI Liang, LIU Guiying, SU Qiankun, LI Zhixuan, LUO Junjie   +4 more
doaj   +1 more source

Grey wolf optimizer based regulator design for automatic generation control of interconnected power system

Cogent Engineering, 2016
This paper presents an application of grey wolf optimizer (GWO) in order to find the parameters of primary governor loop for successful Automatic Generation Control of two areas’ interconnected power system.
Esha Gupta, Akash Saxena
doaj   +1 more source

Some evidence for high energy gamma-ray sources at large galactic latitudes [PDF]

The arrival directions of the gamma-quanta with energies of about 10 to 15th power eV which were registrated by Tien Shan experiment were compared with COS-B observations. On the basis of the Monte Carlo simulations it was shown with low probability that
Karakula, S., Stamenov, J. N., Tkaczyk, W.   +2 more
core   +1 more source

Calculation of Sommerfeld Integrals in Dipole Radiation Problems

Mathematics
This article proposes asymptotic methods for calculating Sommerfeld integrals, which enable us to calculate the integral using the expansion of a function into an infinite power series at the saddle point, where the role of a rapidly oscillating function
Seil Sautbekov, Merey Sautbekova, Kuralay Baisalova, Mustakhim Pshikov   +3 more
doaj   +1 more source

Adaptive Dynamic Surface Integral Sliding Mode Fault-Tolerant Control for Multimachine Excitation Systems with SVC

Complexity, 2020
In this paper, an adaptive dynamic surface integral sliding mode fault-tolerant controller is designed for the multimachine power system with static var compensator (SVC) to overcome the problem of actuator failure.
Guoqiang Zhu, Shuang Ji, Zhiwei Li, Yilong Zhang   +3 more
doaj   +1 more source

Universal optimality of the $E_8$ and Leech lattices and interpolation formulas

, 2019
We prove that the $E_8$ root lattice and the Leech lattice are universally optimal among point configurations in Euclidean spaces of dimensions $8$ and $24$, respectively.
Cohn, Henry, Kumar, Abhinav, Miller, Stephen D., Radchenko, Danylo, Viazovska, Maryna   +4 more
core  

Research on Maximum Power Control of Direct-Drive Wave Power Generation Device Based on BP Neural Network PID Method

Actuators
Ocean wave energy is a new type of clean energy. To improve the power generation and wave energy conversion efficiency of the direct-drive wave power generation system, by addressing the issue of large output errors and poor system stability commonly ...
Xinyu Fan, Hao Meng
doaj   +1 more source

Iterated socles and integral dependence in regular rings [PDF]

, 2014
Let $R$ be a formal power series ring over a field, with maximal ideal $\mathfrak m$, and let $I$ be an ideal of $R$ such that $R/I$ is Artinian. We study the iterated socles of $I$, that is the ideals which are defined as the largest ideal $J$ with $J ...
Corso, Alberto, Goto, Shiro, Huneke, Craig, Polini, Claudia, Ulrich, Bernd   +4 more
core  

Asymptotic and Pseudoholomorphic Solutions of Singularly Perturbed Differential and Integral Equations in the Lomov’s Regularization Method

Axioms, 2019
We consider a singularly perturbed integral equation with weakly and rapidly varying kernels. The work is a continuation of the studies carried out previously, but these were focused solely on rapidly changing kernels.
Abduhafiz Bobodzhanov, Valeriy Safonov, Vasiliy Kachalov   +2 more
doaj   +1 more source

Model-Free Fast Integral Terminal Sliding Mode Control for Maximum Power Point Tracking With High-Order Disturbance Observer in WECSs

IEEE Access
This paper proposes a novel model-free fast integral terminal sliding mode control (MFFITSMC) strategy for permanent magnet synchronous generators (PMSGs) to achieve maximum power point tracking (MPPT) in wind energy conversion systems (WECS) without ...
Xuan Chau Le, Kim Hung Le, Minh Quan Duong   +2 more
doaj   +1 more source