METHODS OF CONTROLLING THE PARAMETERS OF SUBMERSIBLE ELECTRIC MOTOR STARTING PROCESS IN ABNORMAL OPERATING CONDITIONS

2018 ◽  
pp. 95-103
Author(s):  
Lysova Ol'ga Aleksandrovna ◽  
◽  
Fraishteter Vitalii Pinkosovich ◽  
Smirnov Aleksandr Iur'evich ◽  
◽  
...  
Keyword(s):  
Electric Motor ◽  
Operating Conditions ◽  
Submersible Electric Motor ◽  
Starting Process ◽  
Abnormal Operating Conditions

Process Safety for Sustainable Applications

2021 ◽  
pp. 2150033
Author(s):  
Alexander Stolar ◽  
Anton Friedl
Keyword(s):  
Risk Management ◽  
Operating Conditions ◽  
Process Safety ◽  
Implementation Effort ◽  
Wide Range ◽  
System Improvement ◽  
Management Techniques ◽  
Universal Applicability ◽  
Abnormal Operating Conditions ◽  
Business Sectors

Process safety techniques have been used in industry for decades to make processes and systems safer and to optimize them, and thus to improve sustainability. Their main aim is to prevent damage to people, equipment and the environment. In this overview, process safety and risk management techniques are shown that can be applied in the different life cycle phases of an application without much implementation effort. A broad and universal applicability in a wide range of business sectors is set as the main focus. In addition to the application of system improvement techniques, a number of additional considerations, such as maintenance and the consideration of abnormal operating conditions, are included in order to be able to comprehensively improve a system or application.

Design of Hydraulic Motor Spindle for High Speed Machining

2000 ◽  
Author(s):  
Emmanuel I. Agba ◽  
Majid Babai
Keyword(s):  
Composite Materials ◽  
Electric Motor ◽  
High Speed ◽  
Operating Conditions ◽  
High Speed Machining ◽  
Strong Indication ◽  
Hydraulic Motor ◽  
Cutting Power ◽  
Spindle System ◽  
Distinct Increase

Abstract This paper presents the design of a hydraulic motor driven spindle for the processing of metals and composite materials at high rotational speeds. Existing technologies applicable to spindles and spindle holders under severe operating conditions were reviewed. A conceptual design of the hydraulic spindle system was developed. A strong indication of distinct increase in spindle life and gains in cutting power at higher rotational speeds when compared to the conventional electric motor driven spindles underscored the need for the new spindle system.

OPTIMIZING THE PIPELINE DIAMETER OF A CIRCULAR SPRINKLER ACCORDING TO THE MINIMUM ENERGY CONSUMPTION CRITERION

2021 ◽  
pp. 66-71
Author(s):  
NIKOLAY V. TSUGLENOK ◽  
Keyword(s):  
Energy Consumption ◽  
Water Supply ◽  
Electric Drive ◽  
Electric Motor ◽  
Water Distribution ◽  
Minimum Energy ◽  
Operating Conditions ◽  
Total Energy Consumption ◽  
Minimum Energy Consumption ◽  
The Relationship

The authors have determined the conditions for the eff ective use of modern electrifi ed circular sprinklers in the central part of Russia. Their designs are chosen depending on the agrotechnical requirements for irrigation, including the change in the diameter of the water distribution pipeline. However, when the diameter of the pipeline changes, the load on the electric drive of the support trolleys of the sprinkler changes too, which leads to a corresponding change in energy consumption. In turn, this also changes the load of the water supply pump. The paper sets the task of determining the optimal change in the diameter of pipelines according to the criterion of minimum energy consumption, taking into account a number of assumptions. The authors have analyzed the relationship between the change in the load on the electric drive of the sprinkler support trolley and the change in the diameter of one sprinkler section pipeline. It has been found that a decrease in the diameter by 27% (for example, the transition of the diameter of 219 mm to the diameter of 159 mm) leads to a decrease in the load on the electric drive by 38%. However, this also leads to an increase in the head loss in the water supply pump motor and, respectively, to an increase in the load and energy consumption by 0.8…3.8%. The eff ect is initially obvious, but the power of the electric motor of the water supply pump is 10…25 times higher than that of the electric motor of the sprinkler support trolley. Based on the similarity coeffi cients of the irrigation components (water supply and water distribution), the relationship beteween the total energy consumption and the change in the diameter of the water distribution pipeline has been obtained. By diff erentiating the obtained function, the dependence of the value of the optimal diameter for specifi c operating conditions is also obtained. Graphs of the relationship between energy consumption and the change in diameter have been determined, taking into account some restrictions: pump supply, static pressure, and the number of the sprinkler sections.

Submersible pumping unit with increased electromagnetic moment of the submersible electric motor

2021 ◽  
Author(s):  
Anton Gorodnov ◽  
Vladimir Kornilov ◽  
Majid Abdulhameed Al-Ali ◽  
Evgenii Fedorov
Keyword(s):  
Electric Motor ◽  
Submersible Electric Motor ◽  
Electromagnetic Moment ◽  
Pumping Unit

Analysis on the Steady-state Performance and Losses of a Bent-axis Type Hydraulic Motor Used in Heavy Earth Moving Machinery

2021 ◽  
Author(s):  
Ajit Kumar Pandey ◽  
Amit Kumar ◽  
Nitish Kumar
Keyword(s):  
Steady State ◽  
Electric Motor ◽  
Underground Mining ◽  
Operating Conditions ◽  
Constant Speed ◽  
Working Environment ◽  
Variable Load ◽  
Mining Equipment ◽  
Mining Operations ◽  
Design Guideline

Hydraulic components play a significant role in the mining and construction equipment. It is responsible for smooth change in the output speed, torque, and power of the machine. The hydrostatic drive powered by a constant speed electric motor is widely used in the propel system of the mining equipment. Regulation of the displacements of the pump and the hydro-motor of the drive facilitates the control of the straight running and steering of the machines. In the present scenario, better efficiency and ease of control are the critical aspects to be considered in the design and selection of the hydraulic pump and motor used in underground mining operations. The bent axis hydro-motor is one such equipment that is an electro-hydraulic component that can work in an adverse working environment. The present study deals with the performance analysis of fixed displacement bent axis hydro-motor at different operating parameters such as different temperatures, sizes, viscosity at different loads, and drive speed. For analysis, the hydraulic drive consists of a variable displacement pump rotated by a constant speed electric motor and a fixed displacement hydro-motor. The regulation of the pump displacement controls the speed of the drive. Manually controlled hydrostatic drive propels the said machine against variable load demands. The present work investigates the performances of the hydro-motor used in the mining and construction machine through detailed modeling and experimentations. The steady-state performances are analyzed in terms of slip, torque losses and efficiency of the hydro-motor. The study finds the design guideline to operate the hydrostatic drive using such motors in a reasonable efficiency zone. The model is validated for various operating conditions of the equipment by comparing the predicted results with the test results. The outcome of the present work will be expedient for the preliminary design and assortment of similar hydraulic component used in the mobile, mining equipment.

scholarly journals Comparing hydraulic and electromechanical drives by electric motor’s power

2019 ◽  
Vol 294 ◽  
pp. 01002
Author(s):  
Otto Grigorov ◽  
Galyna Anishchenko ◽  
Evhen Druzhynin ◽  
Vsevolod Strizhak ◽  
Mariana Strizhak ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Electric Motor ◽  
Asynchronous Motor ◽  
Hydraulic Drive ◽  
Operation Time ◽  
Operating Conditions ◽  
Positive Displacement ◽  
Work Cycle

The authors have made the analysis of energy consumption by positive-displacement hydraulic drive and asynchronous motor with phase rotor in the course of crane mechanisms operation at all stages of motion: acceleration, movement at nominal or intermediate speed, and deceleration. There have been determined and compared equivalent capacities per work cycle for electric and hydraulic drives of crane mechanisms depending on operating conditions group and operation time. There has been justified the decrease of rated capacity of electric motor of crane mechanisms’ hydraulic drive as compared with the case of applying asynchronous motor with phased rotor for the same mechanisms.

A Solution to CT Saturation by Gregory Newton's Backward Interpolation

2011 ◽  
Vol 12 (6) ◽  
Author(s):  
Sukanta Das ◽  
Gautam Bandyopadhyay ◽  
Prasid Syam
Keyword(s):  
Operating Conditions ◽  
Discrete Wavelet ◽  
Mother Wavelet ◽  
Secondary Current ◽  
Steel Core ◽  
Protection Systems ◽  
Controller Board ◽  
Abnormal Operating Conditions ◽  
Secondary Side ◽  
Primary Current

Saturation problem in steel core Current Transformers (CTs) causes dreadful effects in protection systems as true replica of the primary current is not always reflected in CT secondary side under abnormal operating conditions. This is why detection and production of exact replica of primary current in the CT secondary side is very crucial. This paper presents a discrete wavelet transform based application using 'Daubechies3’ as mother wavelet for the detection of saturation. The compensation of saturated signal is done by Gregory Newton's Backward Interpolation (GNBI). The whole scheme of detection of CT saturation and compensation of saturated CT secondary current has been successfully tested on various saturated signals simulated in MATLAB/SIMULINK with various case studies. Finally, the scheme is validated in real time using DS1104 controller board of dSPACE. The results obtained are very encouraging.

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