Electrochemical Investigation of Hydrogen-Sorbing Alloys for Secondary Power Sources

2003 ◽  
Vol 39 (2) ◽  
pp. 238-244
Author(s):  
S. D. Korolenko ◽  
F. V. Makordei ◽  
L. D. Konovalenko ◽  
I. S. Andrianova
RSC Advances ◽  
2015 ◽  
Vol 5 (47) ◽  
pp. 37330-37339 ◽  
Author(s):  
Zhuo Zheng ◽  
Zhen-Guo Wu ◽  
Yan-Jun Zhong ◽  
Chong-Heng Shen ◽  
Wei-Bo Hua ◽  
...  

A 0.75Li1.2Ni0.2Mn0.6O2·0.25LiNi0.5Mn1.5O4 cathode material with outstanding electrochemical properties has been synthesized by introducing spinel LiNi0.5Mn1.5O4 material to fill the surface gaps in pristine lithium-rich layered Li1.2Ni0.2Mn0.6O2 in a molar ratio of 25 : 75.


Author(s):  
Alexander Alekseevich Worshevsky ◽  
Evgenii Sergeevich Grishakov

The paper describes the problem of electromagnetic compatibility for electrostatic discharge (ESD), which is most actual for ships where all systems are highly automated and susceptible to ESD digital technology. The results of electromagnetic compatibility tests of ship systems after their installation on the vessel allow to conclude that it is not enough to fulfill only the existing ESD immunity requirements of the Russian Maritime register of shipping which are currently confirmed by ESD tests in the laboratory. ESD methods and reasons have been analyzed. The possible accumulated potentials and parameters of currents, voltages and field strengths during discharge are presented. The existing ESD immunity standards are being considered. The scheme of the developed and certified generator of electrostatic discharges ESD – 25000 is presented. The most frequent defects under the influence of ESD are given. There have been formulated the equivalent schemes of the electric equipment housing at different lengths of grounding of the housing and the methods of connecting the cover with the housing. The results of measurements of electric field and magnetic field parameters are presented. The results of modeling and experiments are compared. The developed sensors, methods of their calibration and obtained technical characteristics are being tested. There are given the parameters and forms of ESD voltage and current, experimental data of ESD secondary effects in the EE hull and adjacent equipment, results of discharges in the ship's cable, interference in the supply network through secondary power sources. The most effective design and ESD protection methods have been analyzed


Author(s):  
И.А. Овейчук ◽  
Р.В. Скворцов

В настоящей статье представлены научные результаты решения задачи повышения надёжности и технологичности бортовой радиотелеметрической аппаратуры. Рассмотрены 3 варианта решения поставленной задачи и выбран наиболее перспективный - замена ЭРИ на источники вторичного питания. Данный метод показал наиболее высокие характеристики по сравнению с аналогичными методами. Приведённые расчёты наглядно показывают эффективность предложенного метода. This article presents the scientific results of improving the reliability and manufacturability of on-board radio telemetry equipment. We considered 3 variants of the solution of the task and choose the most promising - the replacement of radio elements with secondary power sources. This method demonstrates the highest characteristics compared to similar methods. The above calculation clearly demonstrates the effectiveness of the proposed method.


2020 ◽  
Vol 2020 (2) ◽  
pp. 43-48
Author(s):  
Sh Begmatov ◽  

The article suggests an innovative way of creating a secondary power supply source-parametric stabilizer on the basis of magnetic semiconductor and electro-ferro-magnetic circuits with practically ideal current stabilization. In contrast to the existing methods of creating parametric stabilizers, the proposed method uses a combination of magnetic semiconductor converter and ferro-resonance-stabilizing device. This combination allows you to create a controlled parametric current stabilizer, characterized by high stability, speed and reliability in operation. Also, as a result of the analysis of the parametric current stabilizer, new analytical expressions have been obtained, allowing revealing simple and accurate methods of calculation of such devices.


2020 ◽  
Vol 7 (3) ◽  
pp. 11-22
Author(s):  
VALERY ANDREEV ◽  
◽  
ALEXANDER POPOV

A reduced model has been developed to describe the time evolution of a discharge in an iron core tokamak, taking into account the nonlinear behavior of the ferromagnetic during the discharge. The calculation of the discharge scenario and program regime in the tokamak is formulated as an inverse problem - the optimal control problem. The methods for solving the problem are compared and the analysis of the correctness and stability of the control problem is carried out. A model of “quasi-optimal” control is proposed, which allows one to take into account real power sources. The discharge scenarios are calculated for the T-15 tokamak with an iron core.


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