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Journal articles on the topic 'Reversible hydraulic machine'

Author: Grafiati
Published: 30 May 2022
Last updated: 31 May 2022

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1

Borovin, Gennady Konstantinovich, and Veniamin Vadimovich Tkachuk. "About the works of modeling and designing a pump-turbine system in pumped-storage power plants (review)." Keldysh Institute Preprints, no. 9 (2022): 1–22. http://dx.doi.org/10.20948/prepr-2022-9.

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The paper presents an overview of research in the world on the design and creation of pumped hydroelectric energy storage with hydraulic machines having optimal characteristics according to the principle of operation of reversible pump turbines, optimization of their flow part. Special attention was paid to the work on the study of the operation of the hydraulic machine in pumping and turbine modes. As the study of publications has shown, active research is being conducted abroad on the design and creation of hydroelectric power plants with hydraulic machines having optimal characteristics. Wh
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2

Tynyanova, Irina, Viktor Drankovskiy, Kseniya Rezvaya, and Оleksandr Kosorukov. "MODELING OF THE HYDRODYNAMIC CHARACTERISTICS OF A REVERSIBLE HYDRAULIC MACHINE." Bulletin of the National Technical University "KhPI". Series: Hydraulic machines and hydraulic units, no. 1 (September 27, 2019): 51–57. http://dx.doi.org/10.20998/2411-3441.2019.1.08.

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3

Ionov, Pavel A., Petr V. Senin, Sergey V. Pyanzov, Aleksey V. Stolyarov, and Alexander M. Zemskov. "Developing a Stand for Evaluating Technical Condition of Volumetric Hydraulic Drives with a Hydraulic Loading Device." Engineering Technologies and Systems 29, no. 4 (2019): 529–45. http://dx.doi.org/10.15507/2658-4123.029.201904.529-545.

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Introduction. The article deals with the development of a device for evaluating technical condition on of volumetric hydraulic drives made in Russia and abroad at repair and service centres. Materials and Methods. The study uses the statements of theoretical mechanics and hydrodynamics, the basic principles of mechanisms and machines production. For technical condition evaluating of volumetric hydraulic drives, the method of hydraulic loading of hydraulic motor was applied. Reliability of results was confirmed during experimental settings of the hydraulic loading device stand. Results. A stand
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4

Volkov, A. V., A. G. Parygin, A. A. Vikhlyantsev, and A. A. Druzhinin. "On optimization of flow passages of impellers of centrifugal pumps." Safety and Reliability of Power Industry 11, no. 4 (2019): 311–18. http://dx.doi.org/10.24223/1999-5555-2018-11-4-311-318.

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The conventional solution for HAPPs is the use of reversible hydraulic machines operating both in the pump mode as well as in the turbine mode. At the same time, for example, a blade system of a hydraulic machine designed for the pumping mode has a high efficiency. However, in the turbine mode, the energy characteristics of such machine are far from optimal. Considering different patterns of micro- and mini-HAPPs (up to 100 kW) of modular design, it is most appropriate to use a pump and a turbine separately, since the efficiency of hydraulic machines is very important in the case of such low p
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5

Zamyslov, V. "Control of a reversible electric machine included in the vehicle suspension." Journal of Physics: Conference Series 2061, no. 1 (2021): 012052. http://dx.doi.org/10.1088/1742-6596/2061/1/012052.

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Abstract The relevance of the work is due to the constantly growing requirements for the ride comfort of automobiles. The purpose of the study is a rational choice and combination of principles for constructing an algorithm for controlling an electric machine, replacing a hydraulic damper in the design of a vehicle’s suspension system. The study of the behavior of suspension, depending on the applied control algorithms, was carried out by the method of mathematical modeling. In this work, the control of the suspension of one wheel was considered. The angular and longitudinal oscillations of th
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6

Adamkowski, Adam, Waldemar Janicki, and Mariusz Lewandowski. "Measurements of Discharge through a Pump-Turbine in Both Flow Directions Using Volumetric Gauging and Pressure-Time Methods." Energies 13, no. 18 (2020): 4706. http://dx.doi.org/10.3390/en13184706.

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This article presents the original procedures for measuring the flow rate using the pressure-time and the volumetric gauging method in the case of performance tests of a reversible hydraulic machine in either turbine or pump modes of operation. Achieving the lowest possible measurement uncertainty was one of the basic conditions during implemented machine tests. It was met using appropriate measuring procedures and high-class measuring equipment. Estimation of the uncertainty for both methods was made on the basis of an analysis consistent with current requirements in this respect. The pressur
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7

Seleznev, V. N. "Numerical simulation of cavitation in the flow path of a reversible hydraulic machine for a head up to 250m." Izvestiya MGTU MAMI 15, no. 4 (2021): 43–48. http://dx.doi.org/10.31992/2074-0530-2021-50-4-43-48.

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In areas where thermal and nuclear power plants are mainly located, the problem of lack of maneuverable capacities, the coverage of peak loads and the passage of periods of reduced energy consumption is solved through the construction of large pumped storage power plants (PSPP). To create highly efficient flow paths for pump-turbines, one of the modern trends is the use of numerical modeling of three-dimensional fluid flow. Nowadays, there are many software products that implement numerical modeling by the finite volume method. The most famous among them are Fluent, CFX, StarCD, Numeca, Flow V
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8

Hu, Ying, Qing Xue Huang, Xiao Hong Hao, and Shao Zhen Jin. "The Supervisory Control and Data Acquisition System for Plate Leveler Based on Multi-Fieldbus." Advanced Materials Research 156-157 (October 2010): 992–95. http://dx.doi.org/10.4028/www.scientific.net/amr.156-157.992.

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To improve the quality of the steel plate, The No.2 Roll Mill of Wuyang Iron and Steel Company has adopted the hydraulic reversible 11 rolls leveler developed by Taiyuan University of Science and Technology and the Taiyuan Heavy Industry Co., Ltd. The machine uses a number of advanced technologies and new equipments. For example, this plate leveler uses the Supervisory Control and Data Acquisition system, including the main operator station, the monitoring station, engineer station, etc.It also adopts Oracle 10G database system and HP 380 Server clusters to realize the management function of t
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9

Rezvaya, Kseniya, Irina Tynyanova, and Оleksandr Kosorukov. "APPLICATION OF THE METHOD OF AVERAGE DIMENSIONLESS PARAMETERS FOR DETERMINING THE OPTIMAL OPERATING MODE OF A HIGH-PRESSURE REVERSIBLE HYDRAULIC MACHINE." Bulletin of the National Technical University "KhPI". Series: Hydraulic machines and hydraulic units, no. 2 (December 26, 2019): 82–88. http://dx.doi.org/10.20998/2411-3441.2019.2.10.

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10

Salter, S. H., J. R. M. Taylor, and N. J. Caldwell. "Power conversion mechanisms for wave energy." Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment 216, no. 1 (2002): 1–27. http://dx.doi.org/10.1243/147509002320382103.

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It is easy to make a device that will respond vigorously to the action of sea waves. Indeed, it is quite hard to make one that will not. However, the conversion of the slow, random, reversing energy flows with very high extreme values into phase-locked synchronous electricity with power quality acceptable to a utility network is very much harder. This paper describes a range of different control strategies of varying degrees of sophistication and then describes possible conversion equipment for high-pressure oil and water and low-pressure air. Like many renewable energy sources, waves would be
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11

Sokol, Yevhen, Mikhaylo Cherkashenko, and Viktor Drankovskiy. "CONTROL AND ENERGY MODELS OF REVERSIBLE HYDRAULIC MACHINES." Bulletin of the National Technical University "KhPI". Series: Hydraulic machines and hydraulic units, no. 2 (December 26, 2019): 4–11. http://dx.doi.org/10.20998/2411-3441.2019.2.01.

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12

Lou, Xi Yin. "Application of Tracked Combine Harvester Step-Less Speed Regulated System." Advanced Materials Research 904 (March 2014): 365–67. http://dx.doi.org/10.4028/www.scientific.net/amr.904.365.

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In this paper, Step-less speed regulation system using double reversible variable pump and double quantitative motor, since the middle of no other control valve, the hydraulic pump and hydraulic motor with high efficiency. To meet the tracked combine and walking machines because of their own characteristics has the advantages of compact structure, light weight, high efficiency, high reliability, and other requirements of the system..
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13

KOSIYUK, MYKOLA, ARTEM KOSIIUK, and VITALY KRAVCHUK. "COMBINED POWER PLANT OF A MOTOR VEHICLE." HERALD OF KHMELNYTSKYI NATIONAL UNIVERSITY 299, no. 4 (2021): 84–88. http://dx.doi.org/10.31891/2307-5732-2021-299-4-84-88.

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Currently, the most promising areas of development of motor transport are an increase of the horsepower characteristic of their power plants as well as increase of fuel efficiency, and reduction of the toxicity level of exhaust fumes. An internal combustion engine as a power unit of the car in a number of operation modes (supplemental motion, small work load, idling, etc.) works extremely inefficiently and contains the high concentration of harmful components in the exhaust fumes. Additionally, in a context of growing shortage of carbohydrate fuels and increase in their value, the problem of t
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14

Sun, Hui, Ruofu Xiao, Weichao Liu, and Fujun Wang. "Analysis of S Characteristics and Pressure Pulsations in a Pump-Turbine With Misaligned Guide Vanes." Journal of Fluids Engineering 135, no. 5 (2013). http://dx.doi.org/10.1115/1.4023647.

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Growing environmental concerns and the need for better power balancing and frequency control have increased attention in renewable energy sources such as the reversible pump-turbine which can provide both power generation and energy storage. Pump-turbine operation along the S-shaped curve can lead to difficulties in loading the rejection process with unusual increases in water pressure, which lead to machine vibrations. Pressure fluctuations are the primary reason for unstable operation of pump-turbines. Misaligned guide vanes (MGVs) are widely used to control the stability in the S region. Th
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15

Widmer, Christian, Thomas Staubli, and Nathan Ledergerber. "Unstable Characteristics and Rotating Stall in Turbine Brake Operation of Pump-Turbines." Journal of Fluids Engineering 133, no. 4 (2011). http://dx.doi.org/10.1115/1.4003874.

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Reversible pump-turbines are versatile in the electricity market since they can be switched between pump and turbine operation within a few minutes. The emphasis on the design of the more sensitive pump flow however often leads to stability problems in no load or turbine brake operation. Unstable characteristics can be responsible for hydraulic system oscillations in these operating points. The cause of the unstable characteristics can be found in the blocking effect of either stationary vortex formation or rotating stall. The so-called unstable characteristic in turbine brake operation is def
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