scholarly journals EVALUATION OF THE SIMULATION RESULTS OF VARIOUS ELECTRIC DRIVE SYSTEMS OF A MINING ENTERPRISE

2021 ◽  
pp. 113-122
Author(s):  
Alexander S. Semenov ◽  
Yuriy V. Bebikhov ◽  
Pavel F. Vasilyev ◽  
Yakov S. Kharitonov
Keyword(s):  
Energy Efficiency ◽  
Electric Drive ◽  
Raw Materials ◽  
Import Substitution ◽  
Mining Industry ◽  
Electricity Consumption ◽  
Real Data ◽  
Angular Speed ◽  
Maximum Energy ◽  
Drive Systems

For the mining industry, the key problem is to ensure maximum energy efficiency at each technological stage of mining production, therefore this article is devoted to assessing the results of modeling two different electric drive systems of the main fan unit of the mine from the point of view of ensuring the energy efficiency of the most energy-intensive unit equipment. In 2017, the main fan units were replaced at one of the mines for the extraction of diamond-bearing raw materials. The main reason for the replacement was the depletion of their resource, as well as an increase in the resistance of the mine network, which required an increase in the depression created by the fan. Comparison of the actual operating parameters of the existing electric drive system and the newly installed one can give an idea of the real scale and directions of development of technologies in the field of electric drive. Collection, processing, analysis and comparison of real data on two fans and electric drive systems of domestic and foreign production can contribute to the disclosure and solution of the problems of import substitution of such equipment. To analyze energy efficiency, methods were applied that involve the creation of mathematical models of two systems in the MatLab/Simulink software package, as well as a technical and economic comparison of the two options in terms of energy consumption. Based on the data obtained as a result of modeling for the TAF-36/21.5-1 and VOD-50 fans, graphical dependencies of static pressure, supply and power on the angular speed were built, and the annual electricity consumption was calculated for each option.

scholarly journals Towards DC Energy Efficient Homes

2021 ◽  
Vol 11 (13) ◽  
pp. 6005
Author(s):  
Daniel Villanueva ◽  
Moisés Cordeiro-Costas ◽  
Andrés E. Feijóo-Lorenzo ◽  
Antonio Fernández-Otero ◽  
Edelmiro Miguez-García
Keyword(s):  
Energy Efficiency ◽  
Electric Vehicles ◽  
Energy Efficient ◽  
Electricity Consumption ◽  
Real Data ◽  
Mean Values ◽  
Led Lighting ◽  
Shed Light

The aim of this paper is to shed light on the question regarding whether the integration of an electric battery as a part of a domestic installation may increase its energy efficiency in comparison with a conventional case. When a battery is included in such an installation, two types of electrical conversion must be considered, i.e., AC/DC and DC/AC, and hence the corresponding losses due to these converters must not be forgotten when performing the analysis. The efficiency of the whole system can be increased if one of the mentioned converters is avoided or simply when its dimensioning is reduced. Possible ways to achieve this goal can be: to use electric vehicles as DC suppliers, the use of as many DC home devices as possible, and LED lighting or charging devices based on renewables. With all this in mind, several scenarios are proposed here in order to have a look at all possibilities concerning AC and DC powering. With the aim of checking these scenarios using real data, a case study is analyzed by operating with electricity consumption mean values.

scholarly journals The impact of higher voltage and current harmonics on the operation of electrical systems

2019 ◽  
Vol 124 ◽  
pp. 05067 ◽  
Author(s):  
A.N. Egorov ◽  
Ya.S. Kharitonov ◽  
V.M. Khubieva ◽  
I.A. Yakushev ◽  
N.V. Golubtsov ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Electric Drive ◽  
Electromagnetic Compatibility ◽  
The Other ◽  
Variable Frequency ◽  
Maintenance Costs ◽  
Current Harmonics ◽  
Electrical Systems ◽  
Drive Systems ◽  
The Impact

The article deals with the assessment of impact of higher harmonics on the operation of variablefrequency electric drive systems used in processing units at mining enterprises. Beyond that, energy efficiency and operation experience of variable-frequency electric drive usage at mining enterprises were studied. The advantages and drawbacks of implementation of variable-frequency electric drive systems were found. They include energy saving and reducing maintenance costs for processing units on one hand, as well as losses due to their incorrect selection and electromagnetic compatibility distortion on the other hand.

scholarly journals Energy efficiency of electric drive systems and its application in education

2016 ◽  
Vol 4 (1) ◽  
pp. 21-28 ◽  
Author(s):  
Zlatin Zlatev ◽  
Antoaneta Dimitrova ◽  
Tanya Pehlivanova ◽  
Plamen Duchev
Keyword(s):  
Energy Efficiency ◽  
Electric Drive ◽  
Drive Systems

scholarly journals CLASSIFICATION OF “ELE CTRIC DRIVE – STOP VALVE” SYSTEMS FROM POSITION OF ENERGY SOURCE USED FOR “OPEN-CLOSED” CYCLE CARRYING OUT

2016 ◽  
Vol 2016 (1) ◽  
pp. 74-79
Author(s):  
Е. Плахотникова ◽  
E. Plakhotnikova
Keyword(s):  
Electric Drive ◽  
Import Substitution ◽  
Systems Design ◽  
Practical Investigations ◽  
Stop Valve ◽  
Working Cycle ◽  
Common Purpose ◽  
System Properties ◽  
Drive Systems

The common purpose of investigation – development of theory and methods of open-closed” systems design. The investigation problems: development of criteria for the functional compatibility of an electric drive and stop valve within the limits of a system, the classification of “electric drive –stop valve” systems from the position of energy sources used, that allows increasing a technical effectiveness, competitiveness of domestic produce and defining the ways for the realization of the priority trend of the RF in the field of import substitution. The paper is a generalization of theoretical and practical investigations of the author directed to the development of a complex approach to the design of “electric drive – stop drive” systems. The paper reposts theoretical prerequisites for the introduction of a new scientific classification of “electric drive-stop valve” systems from the position of energy types used for the realization of the “open-closed” working cycle. Basic classification variants of systems, signs of transition of one system into other, system properties within the limits of the classification offered are shown.

scholarly journals Research of efficiency of implementation of frequency-controlled drive at hydrocarbon warehouses

2021 ◽  
Author(s):  
V. А. Korenda ◽  
◽  
O.S. Protasov ◽  
I.Y. Vyshniakov ◽  
N.L. Tciren ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Electric Drive ◽  
Production Capacity ◽  
Electricity Consumption ◽  
Petroleum Products ◽  
The State ◽  
State Enterprise ◽  
Modes Of Operation ◽  
Pumping Station ◽  
Pumping Equipment

The most important factor in improving the energy efficiency of enterprises and organizations of the State Reserve is the rational use of fuel and energy resources. Oil depots are not the most energy-intensive in the State Reserve system, but reducing electricity consumption is an important factor in reducing the cost of their products. During the past 10-15 years, the world has seen the widespread and successful introduction of frequency-controlled electric drive to solve various technological problems in many sectors of the economy. Installation of frequency converters on the pumping equipment of oil depots gives the chance of smooth regulation of modes of their work. At the same time loading of electric motors of pumps will be optimum, and losses of the electric power are minimum. At oil depots, the main consumer of electricity is pumping equipment. The technological process of operation of these enterprises involves reverse pumping of fuels and lubricants between tanks and rail and tank trucks. The peculiarity of oil depots is the uneven loading of equipment due to different needs in the number of pumped oil products over time, so the loading of the pumping station will also be uneven due to different pressure and supply in the pipelines. To maintain the set mode of operation of the pumping station when changing external factors affecting its operation, it is necessary to monitor and regulate the modes of operation of pumping units. This function can be divided into two areas: regulation of hydraulic modes of operation of pumps, which is used at oil depots, and regulation of energy efficiency of pumping station equipment. The calculation of technical and economic indicators of the introduction of frequency-controlled electric drive is performed on the example of state enterprise "Aystra" Chernihiv. The main purpose of the plant is the reception, storage and shipment of petroleum products of the state material reserve. Production capacity for heavy-duty rail tanks and vehicles allows for freight operations with a capacity of 350 tons per hour.

scholarly journals Auger-type granular fertylizer distributor: matemathical model and dynamic simulation

2012 ◽  
Vol 32 (1) ◽  
pp. 151-163 ◽  
Author(s):  
Angel P. Garcia ◽  
Nelson L. Cappelli ◽  
Claudio K. Umezu
Keyword(s):  
Electric Drive ◽  
Angular Speed ◽  
Open Loop ◽  
Loop Control ◽  
Speed Controller ◽  
Variable Rate Application ◽  
Input Model ◽  
Drive Systems ◽  
Operation Cycle ◽  
The Mathematical Model

The objective of this study was to model mathematically and to simulate the dynamic behavior of an auger-type fertilizer applicator (AFA) in order to use the variable-rate application (VRA) and reduce the coefficient of variation (CV) of the application, proposing an angular speed controller θ' for the motor drive shaft. The input model was θ' and the response was the fertilizer mass flow, due to the construction, density of fertilizer, fill factor and the end position of the auger. The model was used to simulate a control system in open loop, with an electric drive for AFA using an armature voltage (V A) controller. By introducing a sinusoidal excitation signal in V A with amplitude and delay phase optimized and varying θ' during an operation cycle, it is obtained a reduction of 29.8% in the CV (constant V A) to 11.4%. The development of the mathematical model was a first step towards the introduction of electric drive systems and closed loop control for the implementation of AFA with low CV in VRA.

scholarly journals Studies on Energy Consumption of Electric Light Commercial Vehicle Powered by In-Wheel Drive Modules

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7524
Author(s):  
Piotr Szewczyk ◽  
Andrzej Łebkowski
Keyword(s):  
Energy Consumption ◽  
Electric Drive ◽  
Commercial Vehicle ◽  
Real Data ◽  
Drive System ◽  
Vehicle Loading ◽  
Light Commercial Vehicle ◽  
Wheel Drive ◽  
Electric Light ◽  
Drive Systems

This article presents the results of energy consumption research for an electric light commercial vehicle (eLCV) powered by a centrally located motor (4 × 2 drive system) or motors placed in the vehicle’s wheels (4 × 4 drive system). For the considered constructions of electric drive systems, mathematical models of 4 × 2 and 4 × 4 drive systems were developed in the Modelica simulation environment, based on real data. Additionally, the influence of changes in the vehicle loading condition on the operation of the motor mounted in the wheel and the energy consumption of the drive module was investigated. On the basis of the conducted research, a comparative analysis of energy consumption by electric drive systems in 4 × 2 and 4 × 4 configurations was carried out for selected test cycles. The tests carried out with the Worldwide harmonized Light vehicles Test Cycles (WLTC) test cycle showed a roughly 6% lower energy consumption by the 4 × 4 drive system compared to the 4 × 2 configuration.

Study on Energy Consumption Prediction of Liquor-Making Based on GA-BP Neural Net

2014 ◽  
Vol 635-637 ◽  
pp. 1681-1687
Author(s):  
Qi Yao Han ◽  
Li Juan Qian ◽  
Xian Yu Chu
Keyword(s):  
Energy Consumption ◽  
Water Consumption ◽  
Raw Materials ◽  
Electricity Consumption ◽  
Real Data ◽  
Neural Net ◽  
The Real ◽  
The Neural Networks ◽  
Mixed Coding ◽  
Energy Consumption Prediction

Aimed at the Liquor-making with the characteristic of huge consumption of raw materials and energy,this paper presents a predictive method of Liquor-making energy consumption based on GA-BP Neural Net.Genetic algorithm of mixed coding was used to optimize the structure and initial values,and then BP algorithm adjusted weight and thresholding accurately.Construct the B-P model by using the neural networks toolbox of MATLAB. Optimize calculation based on MATLAB genetic algorithm toolbox using the real data of water consumption,electricity consumptionand steam consumption.The prediction results agrees well with the real data.Finally factual data are used to validate the validity and the rationality of the designed result .Liquor-making energy consumption mainly is water consumption,electricity consumption and steam consumption.Results in some extent can reflect the liquor enterprise energy consumption.Experiment shows that the method is effective for the liquor enterprise energy consumption.prediction.

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