Pub Date : 2024-08-29DOI: 10.3103/s1068371224700482
M. G. Astashev, D. I. Panfilov, P. A. Rashitov, D. V. Mostovoy, A. V. Chasov
Abstract
The influence of control discretization on the operation of semiconductor power regulators used in distribution networks for balancing operation mode and compensating reactive power is considered. Analytical expressions are presented for calculating the parameters of the power section of power regulators in two topologies. An analysis of the range of required parameters of the power section under continuous control is performed, highlighting the necessity of constraints considering practical implementation and control discretization. A method for assessing the efficiency of power regulators under discrete parameter control is proposed. An analysis of the impact of parameter setting discretization on the efficiency of operation of two power-regulator schemes is conducted. Various methods for calculating discrete values of the parameters of the power section of power regulators are discussed. The influence of calculation methods for power circuit parameters on the efficiency of power-regulator operation and the number of iterations required to calculate their discrete values is demonstrated.
{"title":"Efficiency of Semiconductor Power Regulators in Discrete Control","authors":"M. G. Astashev, D. I. Panfilov, P. A. Rashitov, D. V. Mostovoy, A. V. Chasov","doi":"10.3103/s1068371224700482","DOIUrl":"https://doi.org/10.3103/s1068371224700482","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The influence of control discretization on the operation of semiconductor power regulators used in distribution networks for balancing operation mode and compensating reactive power is considered. Analytical expressions are presented for calculating the parameters of the power section of power regulators in two topologies. An analysis of the range of required parameters of the power section under continuous control is performed, highlighting the necessity of constraints considering practical implementation and control discretization. A method for assessing the efficiency of power regulators under discrete parameter control is proposed. An analysis of the impact of parameter setting discretization on the efficiency of operation of two power-regulator schemes is conducted. Various methods for calculating discrete values of the parameters of the power section of power regulators are discussed. The influence of calculation methods for power circuit parameters on the efficiency of power-regulator operation and the number of iterations required to calculate their discrete values is demonstrated.</p>","PeriodicalId":39312,"journal":{"name":"Russian Electrical Engineering","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-29DOI: 10.3103/s1068371224700561
A. V. Korzhov, M. A. Dziuba, V. I. Safonov, R. M. o. Babayev, I. E. Korostelev
Abstract
The results of experiments on the study of partial discharges in the insulation of cable lines at nonsinusoidal voltage are presented. With a nonsinusoidality of approximately 10%, the operation of the electrical network in normal mode was simulated, and overvoltage waves were simulated with a nonsinusoidality of about 80% and harmonics in the frequency range of 2–4 kHz. In the case of nonsinusoidality, it is statistically shown that the main factor in the development of partial discharges is the difference between the amplitude of the applied voltage and the threshold voltage of the occurrence of partial discharges, and the partial discharges’ power weakly depends on the harmonic composition of the voltage. It is shown that the greatest deviation from the linear law with an increase in the applied voltage is observed for the power of the partial discharges; therefore it is most advisable to use this dependence when analyzing the state of cable lines by the level of partial discharges. It has been shown experimentally and by simulation that with a nonsinusoidality of 80% and harmonics in the frequency range of 2–4 kHz, the number and power of partial discharges during the period of the main harmonic increase significantly. In this case, the amplitude of the harmonic is already sufficient to recharge the defect and it is the harmonic that becomes decisive in the formation of partial discharges.
{"title":"The Effect of Nonsinusoidal Voltage and Overvoltage Waves on the Development of Partial Discharges","authors":"A. V. Korzhov, M. A. Dziuba, V. I. Safonov, R. M. o. Babayev, I. E. Korostelev","doi":"10.3103/s1068371224700561","DOIUrl":"https://doi.org/10.3103/s1068371224700561","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The results of experiments on the study of partial discharges in the insulation of cable lines at nonsinusoidal voltage are presented. With a nonsinusoidality of approximately 10%, the operation of the electrical network in normal mode was simulated, and overvoltage waves were simulated with a nonsinusoidality of about 80% and harmonics in the frequency range of 2–4 kHz. In the case of nonsinusoidality, it is statistically shown that the main factor in the development of partial discharges is the difference between the amplitude of the applied voltage and the threshold voltage of the occurrence of partial discharges, and the partial discharges’ power weakly depends on the harmonic composition of the voltage. It is shown that the greatest deviation from the linear law with an increase in the applied voltage is observed for the power of the partial discharges; therefore it is most advisable to use this dependence when analyzing the state of cable lines by the level of partial discharges. It has been shown experimentally and by simulation that with a nonsinusoidality of 80% and harmonics in the frequency range of 2–4 kHz, the number and power of partial discharges during the period of the main harmonic increase significantly. In this case, the amplitude of the harmonic is already sufficient to recharge the defect and it is the harmonic that becomes decisive in the formation of partial discharges.</p>","PeriodicalId":39312,"journal":{"name":"Russian Electrical Engineering","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-29DOI: 10.3103/s1068371224700597
Reza Mirzahosseini
Abstract
A permanent magnet motor is commonly derived by its variable frequency inverter-based supply. Therefore, it is a big issue for the designers to specify a suitable value for the frequency to run their designed PM motors with high efficiency. It is of greater importance when the machine operates at variable speeds. In this regard, the present paper tries to study the influence of frequency, pole pair numbers, and output power on the efficiency of a variable speed slotless Axial Flux Permanent Magnet (AFPM) motor. This investigation is performed by applying the electromagnetic and thermal models of the machine. The results are concluded as a formula defining the efficiency of the motor versus the supply frequency, the pole pair numbers, and the machine output power. The proposed formula is evaluated by determining efficiencies for many small power rating machines with various speeds using FE analysis and measurements of a few fabricated. Hence, the obtained formula can be included in any design algorithm of a small slotless AFPM machine.
{"title":"A Study on the Efficiency of a Variable Speed Slotless Axial Flux Permanent Magnet Motor","authors":"Reza Mirzahosseini","doi":"10.3103/s1068371224700597","DOIUrl":"https://doi.org/10.3103/s1068371224700597","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A permanent magnet motor is commonly derived by its variable frequency inverter-based supply. Therefore, it is a big issue for the designers to specify a suitable value for the frequency to run their designed PM motors with high efficiency. It is of greater importance when the machine operates at variable speeds. In this regard, the present paper tries to study the influence of frequency, pole pair numbers, and output power on the efficiency of a variable speed slotless Axial Flux Permanent Magnet (AFPM) motor. This investigation is performed by applying the electromagnetic and thermal models of the machine. The results are concluded as a formula defining the efficiency of the motor versus the supply frequency, the pole pair numbers, and the machine output power. The proposed formula is evaluated by determining efficiencies for many small power rating machines with various speeds using FE analysis and measurements of a few fabricated. Hence, the obtained formula can be included in any design algorithm of a small slotless AFPM machine.</p>","PeriodicalId":39312,"journal":{"name":"Russian Electrical Engineering","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-05DOI: 10.3103/s106837122470038x
D. N. Belkova, V. N. Anosov
Abstract
One of the sticking points of distributed generation facilities operation is considered—increased shaft vibration activity of the autonomous electric generator unit (AEU), which leads to the shutdown of the gas turbine unit (GTU) by antivibration protection. The main reasons for subsynchronous resonance in the AEU are analyzed. The AEU model based on a GTU, power transformer, and linear and nonlinear loads is presented. The results of simulation modeling of an AEU with a thyristor rectifier as a nonlinear load are obtained, and the influence of rigidity and response time of the power system mechanical component is studied.
{"title":"Simulation Modeling of Subsynchronous Resonance of an Autonomous Power District with a Gas Turbine Unit","authors":"D. N. Belkova, V. N. Anosov","doi":"10.3103/s106837122470038x","DOIUrl":"https://doi.org/10.3103/s106837122470038x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>One of the sticking points of distributed generation facilities operation is considered—increased shaft vibration activity of the autonomous electric generator unit (AEU), which leads to the shutdown of the gas turbine unit (GTU) by antivibration protection. The main reasons for subsynchronous resonance in the AEU are analyzed. The AEU model based on a GTU, power transformer, and linear and nonlinear loads is presented. The results of simulation modeling of an AEU with a thyristor rectifier as a nonlinear load are obtained, and the influence of rigidity and response time of the power system mechanical component is studied.</p>","PeriodicalId":39312,"journal":{"name":"Russian Electrical Engineering","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141946899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-05DOI: 10.3103/s1068371224700433
S. I. Dedov, N. I. Shchurov, A. A. Shtang, S. A. Vnukov, I. I. Singizin
Abstract
The energy efficiency was determined of the energy storage buffer of the traction power unit of an electric bus taking into account the degradation of the lithium battery. A simulation model of the energy system of an electric bus was synthesized in MATLAB/Simulink, and the results of simulation of the energy system without a buffer storage and with a buffer of various capacities based on a lithium titanate battery were compared. The implementation of an energy storage buffer with 14.47% of the total capacity of the storage will increase the battery lifetime by 32.7%.
{"title":"Determination of the Parameters of the Buffer Storage of an Electric Bus Taking into Account the Degradation of the Lithium Battery","authors":"S. I. Dedov, N. I. Shchurov, A. A. Shtang, S. A. Vnukov, I. I. Singizin","doi":"10.3103/s1068371224700433","DOIUrl":"https://doi.org/10.3103/s1068371224700433","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The energy efficiency was determined of the energy storage buffer of the traction power unit of an electric bus taking into account the degradation of the lithium battery. A simulation model of the energy system of an electric bus was synthesized in MATLAB/Simulink, and the results of simulation of the energy system without a buffer storage and with a buffer of various capacities based on a lithium titanate battery were compared. The implementation of an energy storage buffer with 14.47% of the total capacity of the storage will increase the battery lifetime by 32.7%.</p>","PeriodicalId":39312,"journal":{"name":"Russian Electrical Engineering","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141946905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-05DOI: 10.3103/s1068371224700457
A. A. Shtang, D. P. Kravchenko, S. N. Andriyashin, N. D. Ereshchenko, E. Yu. Abramov
Abstract
The increasing use of electric vehicles is leading to a need to expand charging infrastructure. With no allowance for the state of the power system, this can lead to a shortage of power supply systems and local overloads in the network. In this paper, we propose a way to reduce the local impact of electric charging stations on the network by integrating a battery into the power supply scheme as a buffer storage device to reduce peaks in electricity consumption. We develop a simulation model of an electric charging station, which includes two main elements: a dc–dc converter and a rechargeable battery. An automatic control system of an electric charging station for charging modes with constant voltage and constant current is synthesized using the method of subordinate control systems. The synthesized control system meets the required quality indicators.
{"title":"A Simulation Model and Control System of a Charging Station with Energy Storage","authors":"A. A. Shtang, D. P. Kravchenko, S. N. Andriyashin, N. D. Ereshchenko, E. Yu. Abramov","doi":"10.3103/s1068371224700457","DOIUrl":"https://doi.org/10.3103/s1068371224700457","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The increasing use of electric vehicles is leading to a need to expand charging infrastructure. With no allowance for the state of the power system, this can lead to a shortage of power supply systems and local overloads in the network. In this paper, we propose a way to reduce the local impact of electric charging stations on the network by integrating a battery into the power supply scheme as a buffer storage device to reduce peaks in electricity consumption. We develop a simulation model of an electric charging station, which includes two main elements: a dc–dc converter and a rechargeable battery. An automatic control system of an electric charging station for charging modes with constant voltage and constant current is synthesized using the method of subordinate control systems. The synthesized control system meets the required quality indicators.</p>","PeriodicalId":39312,"journal":{"name":"Russian Electrical Engineering","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141946908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-05DOI: 10.3103/s106837122470041x
I. L. Popov, D. M. Toporkov, D. Yu. Babitsky
Abstract
Often, one of the requirements put forward when designing synchronous machines with electromagnetic excitation is a low shaft speed, but it is not always possible to design a machine with a large number of poles and the required dimensions. The use of fractional-slot tooth winding makes it possible to reduce the number of teeth on the stator, which, in turn, makes it possible to reduce the diameter of the stator bore and design the machine with the required dimensions. In fractional-slot tooth windings, the coil covers one tooth, which makes the process of removing it much easier than in stators with traditional distributed windings, which increases the maintainability of machines with such windings. It is possible to simplify the removal of the coil even more by making the slots completely open, but in this case the influence of stator serration on the distribution of magnetic induction will be stronger than with semiclosed slots, which can lead to a number of negative consequences from increased losses to EMF distortion. In this case, it is possible to reduce the distortion of the magnetic induction curve in the air gap by using a wedge made of magnetically conductive material in the stator design. The article discusses the design of the rotor pole of a salient pole machine with a fractional-slot tooth winding and an open stator slot. In particular, various rotor pole configurations are considered in combination with an open slot stator, a magnetically conductive wedge and without it.
{"title":"Application of a Magnetically Conductive Wedge in the Stator Design of Synchronous Salient-Pole Machines with Fractional-Slot Tooth Winding","authors":"I. L. Popov, D. M. Toporkov, D. Yu. Babitsky","doi":"10.3103/s106837122470041x","DOIUrl":"https://doi.org/10.3103/s106837122470041x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Often, one of the requirements put forward when designing synchronous machines with electromagnetic excitation is a low shaft speed, but it is not always possible to design a machine with a large number of poles and the required dimensions. The use of fractional-slot tooth winding makes it possible to reduce the number of teeth on the stator, which, in turn, makes it possible to reduce the diameter of the stator bore and design the machine with the required dimensions. In fractional-slot tooth windings, the coil covers one tooth, which makes the process of removing it much easier than in stators with traditional distributed windings, which increases the maintainability of machines with such windings. It is possible to simplify the removal of the coil even more by making the slots completely open, but in this case the influence of stator serration on the distribution of magnetic induction will be stronger than with semiclosed slots, which can lead to a number of negative consequences from increased losses to EMF distortion. In this case, it is possible to reduce the distortion of the magnetic induction curve in the air gap by using a wedge made of magnetically conductive material in the stator design. The article discusses the design of the rotor pole of a salient pole machine with a fractional-slot tooth winding and an open stator slot. In particular, various rotor pole configurations are considered in combination with an open slot stator, a magnetically conductive wedge and without it.</p>","PeriodicalId":39312,"journal":{"name":"Russian Electrical Engineering","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141946903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-05DOI: 10.3103/s1068371224700408
V. V. Grechkin, A. A. Temlyakov, V. M. Kaveshnikov, I. L. Popov, Z. S. Temlyakova
Abstract
In electric motor control systems, higher harmonics are often present in the voltage generated by frequency converters, which can cause losses in an electric machine and, ultimately, lead to its overheating. The voltage generated by the frequency converter may not meet standards, which requires special attention when developing motors designed for use with such converters. The article analyzes the voltage at the output of the frequency converter in accordance with the requirements of the state standard, presents the electrical circuit according to which data was collected, and gives recommendations for the design of motors designed to work with frequency converters.
{"title":"Analysis of the Phase Voltage of an Induction Motor of an Adjustable Electromechanical System","authors":"V. V. Grechkin, A. A. Temlyakov, V. M. Kaveshnikov, I. L. Popov, Z. S. Temlyakova","doi":"10.3103/s1068371224700408","DOIUrl":"https://doi.org/10.3103/s1068371224700408","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In electric motor control systems, higher harmonics are often present in the voltage generated by frequency converters, which can cause losses in an electric machine and, ultimately, lead to its overheating. The voltage generated by the frequency converter may not meet standards, which requires special attention when developing motors designed for use with such converters. The article analyzes the voltage at the output of the frequency converter in accordance with the requirements of the state standard, presents the electrical circuit according to which data was collected, and gives recommendations for the design of motors designed to work with frequency converters.</p>","PeriodicalId":39312,"journal":{"name":"Russian Electrical Engineering","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141946902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-05DOI: 10.3103/s1068371224700354
R. A. Bikeev
Abstract
The simulation results of the electrical operating modes of the DSP-100I7 electric arc furnace with different designs of the secondary current lead—triangulated and coplanar versions with a conductive conduit—are presented. The dependences of the skewness of arc discharge power in these furnaces under symmetrical and asymmetrical current modes are obtained. The significant influence of the asymmetrical mode on the arc power skewness in these furnaces is shown.
{"title":"Special Aspects of Power Transfer between Electric Arc Furnace Phases","authors":"R. A. Bikeev","doi":"10.3103/s1068371224700354","DOIUrl":"https://doi.org/10.3103/s1068371224700354","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The simulation results of the electrical operating modes of the DSP-100I7 electric arc furnace with different designs of the secondary current lead—triangulated and coplanar versions with a conductive conduit—are presented. The dependences of the skewness of arc discharge power in these furnaces under symmetrical and asymmetrical current modes are obtained. The significant influence of the asymmetrical mode on the arc power skewness in these furnaces is shown.</p>","PeriodicalId":39312,"journal":{"name":"Russian Electrical Engineering","volume":"88 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141946901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-05DOI: 10.3103/s1068371224700342
A. I. Aliferov, L. P. Goreva
Abstract
The experience of designing a secondary current supply for an ore recovery furnace with a round tub designed to replace a furnace with a rectangular tub is considered. At the same time, the power supply has far from exhausted its working life, and its replacement was not expected. Traditional design solutions for a short network of a round ore recovery furnace, providing a satisfactory level of its electrical parameters, involve the use of a secondary current supply circuit “triangle on electrodes.” The dismantled furnace had a “star on transformer” secondary current supply circuit. New design solutions have been developed based on the general physical laws of the formation of the electromagnetic field of a system of conductors with currents. Their use provided a sufficiently high level of input active power, which also made it possible to reduce the asymmetry of the inductive resistance of the secondary current supply from 58 to 10% compared with the old furnace. The study used the method of numerical modeling in specialized ANSYS software with the integration of a geometric model from a computer-aided design system.
Abstract The experience of designing a secondary current supply for a ore recovery furnace with a round tub designed to replace a furnace with a rectangular tub is considered.与此同时，该电源的工作寿命还远远没有结束，而且预计不会更换。传统的圆形矿石回收炉短路网络设计方案是使用 "三角形电极 "二次电流供应电路，从而使其电气参数达到令人满意的水平。拆除的熔炉采用了 "变压器星形 "二次电流供电电路。新的设计方案是根据电流导体系统电磁场形成的一般物理规律制定的。使用这些方案可以提供足够高的输入有功功率，还可以将二次电流供应的感应电阻不对称程度从旧炉的 58% 降低到 10%。该研究采用了 ANSYS 专业软件中的数值建模方法，并结合了计算机辅助设计系统中的几何模型。
{"title":"The Efficiency of Design Solutions of the Current Supply during Modernization of an Ore-Thermal Furnace","authors":"A. I. Aliferov, L. P. Goreva","doi":"10.3103/s1068371224700342","DOIUrl":"https://doi.org/10.3103/s1068371224700342","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The experience of designing a secondary current supply for an ore recovery furnace with a round tub designed to replace a furnace with a rectangular tub is considered. At the same time, the power supply has far from exhausted its working life, and its replacement was not expected. Traditional design solutions for a short network of a round ore recovery furnace, providing a satisfactory level of its electrical parameters, involve the use of a secondary current supply circuit “triangle on electrodes.” The dismantled furnace had a “star on transformer” secondary current supply circuit. New design solutions have been developed based on the general physical laws of the formation of the electromagnetic field of a system of conductors with currents. Their use provided a sufficiently high level of input active power, which also made it possible to reduce the asymmetry of the inductive resistance of the secondary current supply from 58 to 10% compared with the old furnace. The study used the method of numerical modeling in specialized ANSYS software with the integration of a geometric model from a computer-aided design system.</p>","PeriodicalId":39312,"journal":{"name":"Russian Electrical Engineering","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141946832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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