Pub Date : 2021-11-19DOI: 10.1109/apeie52976.2021.9647638
Svetlana V. Yastrebova, M. Grif
The paper considers the field of designing functional networks in human-machine systems based on the functional-structural theory. Current research is constructing an algorithm for generation structural and parametrical alternatives serial-parallel functional network. The description of software development that will help in automation of the design processes for hybrid expert system Intellect-3was made based on the proposed algorithms. The existed functioning will be updated and a new module will be created in purpose to extend an ability of this module realization. There will be used a new stack of technologies which include .NET 6, C# 10 and ML.NET. It will help in creation a storage, which will collect all functional networks for a future use. The storage will help in creation a knowledge base, which will be very useful in filtration and functional network search, and it will be possible to classify functional networks in the future updates of Intellect-3.
{"title":"Program Module Development for Generation Structural Alternatives Serial-parallel Functional Networks","authors":"Svetlana V. Yastrebova, M. Grif","doi":"10.1109/apeie52976.2021.9647638","DOIUrl":"https://doi.org/10.1109/apeie52976.2021.9647638","url":null,"abstract":"The paper considers the field of designing functional networks in human-machine systems based on the functional-structural theory. Current research is constructing an algorithm for generation structural and parametrical alternatives serial-parallel functional network. The description of software development that will help in automation of the design processes for hybrid expert system Intellect-3was made based on the proposed algorithms. The existed functioning will be updated and a new module will be created in purpose to extend an ability of this module realization. There will be used a new stack of technologies which include .NET 6, C# 10 and ML.NET. It will help in creation a storage, which will collect all functional networks for a future use. The storage will help in creation a knowledge base, which will be very useful in filtration and functional network search, and it will be possible to classify functional networks in the future updates of Intellect-3.","PeriodicalId":272064,"journal":{"name":"2021 XV International Scientific-Technical Conference on Actual Problems Of Electronic Instrument Engineering (APEIE)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132109775","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 : 2021-11-19DOI: 10.1109/apeie52976.2021.9647682
A. Aletdinova, M. Murtazina
In the paper, the importance of online labor market data analyzing is considered, and the problems that arise during online data on job vacancies collection and processing are analyzed. The methodological approaches used by scientists for data mining of the labor market are reviewed. The data on job vacancies should be classified as semistructured data. In this regard, the analysis of data on job vacancies requires the use of data preparation procedures and algorithmic methods to extract the relevant information. If the data are used from different online job database, then it is necessary to form a common system of industries and professional areas. It is necessary to choose the profession title and the list of key competencies that define it, as well as identify synonyms among the competencies names. It is necessary to resolve the issue of wages level measuring, and to determine the strategy for processing job vacancy data instances in which some fields were not filled. The paper proposes an approach to build the core of professional competencies model based on the methods of the labor market data mining. The research object is the vacancies from the online labor exchange source HeadHunter. The results of extracting key professional competencies for IT specialists and sales managers are given in the paper. According to the study results, it was determined that further development of the methodology for the semi-structured data mining on the labor market is required.
{"title":"The Collection and Processing Specifics of Online Data on Job Vacancies in the Russian Labor Market","authors":"A. Aletdinova, M. Murtazina","doi":"10.1109/apeie52976.2021.9647682","DOIUrl":"https://doi.org/10.1109/apeie52976.2021.9647682","url":null,"abstract":"In the paper, the importance of online labor market data analyzing is considered, and the problems that arise during online data on job vacancies collection and processing are analyzed. The methodological approaches used by scientists for data mining of the labor market are reviewed. The data on job vacancies should be classified as semistructured data. In this regard, the analysis of data on job vacancies requires the use of data preparation procedures and algorithmic methods to extract the relevant information. If the data are used from different online job database, then it is necessary to form a common system of industries and professional areas. It is necessary to choose the profession title and the list of key competencies that define it, as well as identify synonyms among the competencies names. It is necessary to resolve the issue of wages level measuring, and to determine the strategy for processing job vacancy data instances in which some fields were not filled. The paper proposes an approach to build the core of professional competencies model based on the methods of the labor market data mining. The research object is the vacancies from the online labor exchange source HeadHunter. The results of extracting key professional competencies for IT specialists and sales managers are given in the paper. According to the study results, it was determined that further development of the methodology for the semi-structured data mining on the labor market is required.","PeriodicalId":272064,"journal":{"name":"2021 XV International Scientific-Technical Conference on Actual Problems Of Electronic Instrument Engineering (APEIE)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133712195","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 : 2021-11-19DOI: 10.1109/apeie52976.2021.9647517
E. Karaush
The evolution of global navigation satellite systems has formed a tendency towards the creation of methods for determining coordinates and time using multi-frequency navigation observations. This made it necessary to estimate the GNSS signals delays in receivers and satellites. This signal delays are considered constant in time and dependent on the frequency of the navigation signal. This circumstance makes it difficult to estimate the signal delays in the receiver for GLONASS. Currently, the GLONASS system uses frequency division of signals. It also complicates the monitoring of the Earth's ionosphere using GLONASS signals. Therefore, it is necessary to estimate such signal delays in satellites and receivers. There is a way to calibrate GNSS receivers using a signal simulator. Calibration is carried out in laboratories. But for receivers in hard-to-reach areas (for example, the Arctic and Antarctica), this calibration method is not suitable. Therefore, a method is needed to calibrate the receiver to GNSS signals. This paper describes the estimating delays problem of receiver navigation signals from GNSS observations. The conditions and methods of processing observations to estimate such delays are also considered.
{"title":"A Study of the Calibration Method for Receiver's GNSS","authors":"E. Karaush","doi":"10.1109/apeie52976.2021.9647517","DOIUrl":"https://doi.org/10.1109/apeie52976.2021.9647517","url":null,"abstract":"The evolution of global navigation satellite systems has formed a tendency towards the creation of methods for determining coordinates and time using multi-frequency navigation observations. This made it necessary to estimate the GNSS signals delays in receivers and satellites. This signal delays are considered constant in time and dependent on the frequency of the navigation signal. This circumstance makes it difficult to estimate the signal delays in the receiver for GLONASS. Currently, the GLONASS system uses frequency division of signals. It also complicates the monitoring of the Earth's ionosphere using GLONASS signals. Therefore, it is necessary to estimate such signal delays in satellites and receivers. There is a way to calibrate GNSS receivers using a signal simulator. Calibration is carried out in laboratories. But for receivers in hard-to-reach areas (for example, the Arctic and Antarctica), this calibration method is not suitable. Therefore, a method is needed to calibrate the receiver to GNSS signals. This paper describes the estimating delays problem of receiver navigation signals from GNSS observations. The conditions and methods of processing observations to estimate such delays are also considered.","PeriodicalId":272064,"journal":{"name":"2021 XV International Scientific-Technical Conference on Actual Problems Of Electronic Instrument Engineering (APEIE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128853576","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 : 2021-11-19DOI: 10.1109/apeie52976.2021.9647483
A. Marchenko, V. Denisov, I. Murashkina
One of the main modern trends in the development of the electric power industry is decentralization with the transition to the use of low capacity electric generators (1–25 MW) located in close proximity to electric loads, as well as decentralization of control modes, mainly in distribution electric networks. The using of such electric generators (low capacity power plants) as the main source of energy supply with an appropriate control system, which ensures, among other things, the reliability of energy supply to consumers, allows to talk about creating qualitatively new low capacity power systems (Minigrid) based on them. The research objective is to study the method that provides the technical feasibility of safe synchronous operation of low capacity power units in Minigrid with network on parallel operation, and check the setpoint settings of the leading balanced separation of the local power supply system from the external electric network. The modeling results of Minigrid modes based on fuel generation and network equivalent area scheme of Power System are presented. The results allow drawing conclusions about the safety of Minigrid parallel operation based on a cogeneration multi-unit power plant with an external power supply network using the method developed.
{"title":"Investigation of the Parallel Operation Stability of Minigrid Based on Small Generation with an External Electrical Network of the Power System","authors":"A. Marchenko, V. Denisov, I. Murashkina","doi":"10.1109/apeie52976.2021.9647483","DOIUrl":"https://doi.org/10.1109/apeie52976.2021.9647483","url":null,"abstract":"One of the main modern trends in the development of the electric power industry is decentralization with the transition to the use of low capacity electric generators (1–25 MW) located in close proximity to electric loads, as well as decentralization of control modes, mainly in distribution electric networks. The using of such electric generators (low capacity power plants) as the main source of energy supply with an appropriate control system, which ensures, among other things, the reliability of energy supply to consumers, allows to talk about creating qualitatively new low capacity power systems (Minigrid) based on them. The research objective is to study the method that provides the technical feasibility of safe synchronous operation of low capacity power units in Minigrid with network on parallel operation, and check the setpoint settings of the leading balanced separation of the local power supply system from the external electric network. The modeling results of Minigrid modes based on fuel generation and network equivalent area scheme of Power System are presented. The results allow drawing conclusions about the safety of Minigrid parallel operation based on a cogeneration multi-unit power plant with an external power supply network using the method developed.","PeriodicalId":272064,"journal":{"name":"2021 XV International Scientific-Technical Conference on Actual Problems Of Electronic Instrument Engineering (APEIE)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128450328","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 : 2021-11-19DOI: 10.1109/apeie52976.2021.9647440
O. G. Melentiev, I. Shevnina, Alexander V. Stenin
This paper considers computational costs that occur when a cognitive radio system changes channels for a secondary user. The theoretical gain was estimated to find ways to optimize computations, based on knowledge about the conditional state of the cognitive radio system. The analysis of the unnormalized matrix of transition probabilities made it possible to formulate two rules for filling the matrices. The authors studied the structure of the matrix of transition probabilities for three channels and tried to identify the relationship between its elements and symmetry for the matrix dimensions - 24 to 24 elements. The proposed technique allows replacing the calculation of the product of N real numbers with one rewriting of the real number and reduces the multiplication operations. The results of the work can serve as methods for optimizing computational costs in cognitive radio systems or similar systems, this is due to the need to perform computations on devices that do not have enough free resources.
{"title":"Reduction of Computitional Costs when Forming a Matrix of Transition Probabilities in a Cognitive Radio System","authors":"O. G. Melentiev, I. Shevnina, Alexander V. Stenin","doi":"10.1109/apeie52976.2021.9647440","DOIUrl":"https://doi.org/10.1109/apeie52976.2021.9647440","url":null,"abstract":"This paper considers computational costs that occur when a cognitive radio system changes channels for a secondary user. The theoretical gain was estimated to find ways to optimize computations, based on knowledge about the conditional state of the cognitive radio system. The analysis of the unnormalized matrix of transition probabilities made it possible to formulate two rules for filling the matrices. The authors studied the structure of the matrix of transition probabilities for three channels and tried to identify the relationship between its elements and symmetry for the matrix dimensions - 24 to 24 elements. The proposed technique allows replacing the calculation of the product of N real numbers with one rewriting of the real number and reduces the multiplication operations. The results of the work can serve as methods for optimizing computational costs in cognitive radio systems or similar systems, this is due to the need to perform computations on devices that do not have enough free resources.","PeriodicalId":272064,"journal":{"name":"2021 XV International Scientific-Technical Conference on Actual Problems Of Electronic Instrument Engineering (APEIE)","volume":"182 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115450103","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 : 2021-11-19DOI: 10.1109/apeie52976.2021.9647547
I. Korel, Lyana V. Chetvergova, B. Nyushkov, Anastasia Yu. Kutishcheva
The authors investigate nonlinear evolution of a dark pulse allocated within an arbitrary background bright pulse upon propagation in telecom optical fibers. For the first time was revealed that owing to a phenomenon partially similar to the modulation instability, a single dark pulse can evolve into a specific pulse structure - an ordered cluster of bound bright and dark pulses, when propagating in anomalous-dispersion fibers. It was shown that energy of the background pulse can be mostly transferred to the burst of bright and dark pulses under certain conditions. This evolution is governed mainly by such initial parameters as the background pulse peak power and the dark pulse duration. It can be considered as a limiting factor for fiber transmission of arbitrary optical waveforms, on the one hand, and as a promising method for ultrashort pulse bursts generation, on the other hand. The obtained bursts feature an ultrahigh (sub-THz) intraburst pulse repetition rate.
{"title":"Propagation Dynamics of Dark Pulses in Optical Fiber Links","authors":"I. Korel, Lyana V. Chetvergova, B. Nyushkov, Anastasia Yu. Kutishcheva","doi":"10.1109/apeie52976.2021.9647547","DOIUrl":"https://doi.org/10.1109/apeie52976.2021.9647547","url":null,"abstract":"The authors investigate nonlinear evolution of a dark pulse allocated within an arbitrary background bright pulse upon propagation in telecom optical fibers. For the first time was revealed that owing to a phenomenon partially similar to the modulation instability, a single dark pulse can evolve into a specific pulse structure - an ordered cluster of bound bright and dark pulses, when propagating in anomalous-dispersion fibers. It was shown that energy of the background pulse can be mostly transferred to the burst of bright and dark pulses under certain conditions. This evolution is governed mainly by such initial parameters as the background pulse peak power and the dark pulse duration. It can be considered as a limiting factor for fiber transmission of arbitrary optical waveforms, on the one hand, and as a promising method for ultrashort pulse bursts generation, on the other hand. The obtained bursts feature an ultrahigh (sub-THz) intraburst pulse repetition rate.","PeriodicalId":272064,"journal":{"name":"2021 XV International Scientific-Technical Conference on Actual Problems Of Electronic Instrument Engineering (APEIE)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115633302","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 : 2021-11-19DOI: 10.1109/apeie52976.2021.9647498
A. M. Sazhnev, L. G. Rogulina
The results of modeling suppressors and protection devices based on them are presented in the form of a separate library using the Cadence software environment (OrCAD). The presented behavioral models of suppressors are developed for the domestic element base and allow more accurately representing the current-voltage characteristics in comparison with standard SPISE models. The behavioral models include typical SPICE components of the OrCAD software environment, such as passive elements, semiconductors, and controlled current and voltage sources. The protective devices include suppressors and assemblies based on them, designed to protect one line or two channels. The simulation results for low (100 Hz) and high (40 kHz) frequencies are presented. The studied protective devices have a high degree of protection against electrostatic discharges at an extremely low level of their own capacity, which allows them to be included in circuits with operating frequencies up to 3 GHz and successfully protect digital interfaces (USB, MHL/MDDI, LVDS, etc.), as well as multimedia ports of displays and memory cards.
{"title":"The Behavioral Models of Suppressors and Devices Based on Them","authors":"A. M. Sazhnev, L. G. Rogulina","doi":"10.1109/apeie52976.2021.9647498","DOIUrl":"https://doi.org/10.1109/apeie52976.2021.9647498","url":null,"abstract":"The results of modeling suppressors and protection devices based on them are presented in the form of a separate library using the Cadence software environment (OrCAD). The presented behavioral models of suppressors are developed for the domestic element base and allow more accurately representing the current-voltage characteristics in comparison with standard SPISE models. The behavioral models include typical SPICE components of the OrCAD software environment, such as passive elements, semiconductors, and controlled current and voltage sources. The protective devices include suppressors and assemblies based on them, designed to protect one line or two channels. The simulation results for low (100 Hz) and high (40 kHz) frequencies are presented. The studied protective devices have a high degree of protection against electrostatic discharges at an extremely low level of their own capacity, which allows them to be included in circuits with operating frequencies up to 3 GHz and successfully protect digital interfaces (USB, MHL/MDDI, LVDS, etc.), as well as multimedia ports of displays and memory cards.","PeriodicalId":272064,"journal":{"name":"2021 XV International Scientific-Technical Conference on Actual Problems Of Electronic Instrument Engineering (APEIE)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126525772","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 : 2021-11-19DOI: 10.1109/apeie52976.2021.9647471
E. Ionikova, Kirill Karpov, V. Shuvalov
The article discusses a method for calculating the availability factors of optical fiber under conditions of reliable control of the technical state of the system. In the simulation, in addition to latent gradual failures, the aging degradation of the optical fiber is taken into account. The matrix method is used to calculate the system reliability indicators. The presented Markov model of the system is implemented by means of computer modeling. Based on the calculation results, the types of systems with a certain set of reliability characteristics, which require taking into account the intensity of damage accumulation in optical fiber as a result of degradation in their modeling, are determined. The article also considers the dependence of the maximum allowable load on the optical fiber on such variables as the value of the critical value of the probability of fiber destruction, accepted by the owner of the infrastructure, and the desired time of the optical fiber operation until reaching the critical value of the probability of fiber destruction. Restricting the load on the optical fiber within the maximum allowable value will ensure the required lifetime of the optical fiber.
{"title":"Reliability of Optical Cable under Gradual Failures Taking into Account the Degree of Fiber Degradation","authors":"E. Ionikova, Kirill Karpov, V. Shuvalov","doi":"10.1109/apeie52976.2021.9647471","DOIUrl":"https://doi.org/10.1109/apeie52976.2021.9647471","url":null,"abstract":"The article discusses a method for calculating the availability factors of optical fiber under conditions of reliable control of the technical state of the system. In the simulation, in addition to latent gradual failures, the aging degradation of the optical fiber is taken into account. The matrix method is used to calculate the system reliability indicators. The presented Markov model of the system is implemented by means of computer modeling. Based on the calculation results, the types of systems with a certain set of reliability characteristics, which require taking into account the intensity of damage accumulation in optical fiber as a result of degradation in their modeling, are determined. The article also considers the dependence of the maximum allowable load on the optical fiber on such variables as the value of the critical value of the probability of fiber destruction, accepted by the owner of the infrastructure, and the desired time of the optical fiber operation until reaching the critical value of the probability of fiber destruction. Restricting the load on the optical fiber within the maximum allowable value will ensure the required lifetime of the optical fiber.","PeriodicalId":272064,"journal":{"name":"2021 XV International Scientific-Technical Conference on Actual Problems Of Electronic Instrument Engineering (APEIE)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131431603","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 : 2021-11-19DOI: 10.1109/apeie52976.2021.9647491
P. Matrenin, Dmitriy Antonenkov, A. Arestova
One of the most important tasks for a large industrial enterprise is to reduce the production cost. The electricity cost for each industrial enterprise is formed by many factors, some of which can be influenced to reduce final costs. An overview of existing methods of load regulation is presented, as well as an assessment of their feasibility and efficiency in terms of reducing the cost of electricity and power. Mid-term forecasting electricity tariff rate to change the load schedule can reduce the company's electricity costs. The possibility of building a machine learning model predicting the retail market hourly electricity tariff rate has been studied. Modeling was performed on the publicly available data of electricity prices in the Novosibirsk region (Russia) for 2018–2020. It was found out that Extreme Gradient Boosting over regression decision trees can predict the hourly electricity tariff rate for a month ahead with a mean absolute percentage error of 4 %.
{"title":"Energy Efficiency Improvement of Industrial Enterprise Based on Machine Learning Electricity Tariff Forecasting","authors":"P. Matrenin, Dmitriy Antonenkov, A. Arestova","doi":"10.1109/apeie52976.2021.9647491","DOIUrl":"https://doi.org/10.1109/apeie52976.2021.9647491","url":null,"abstract":"One of the most important tasks for a large industrial enterprise is to reduce the production cost. The electricity cost for each industrial enterprise is formed by many factors, some of which can be influenced to reduce final costs. An overview of existing methods of load regulation is presented, as well as an assessment of their feasibility and efficiency in terms of reducing the cost of electricity and power. Mid-term forecasting electricity tariff rate to change the load schedule can reduce the company's electricity costs. The possibility of building a machine learning model predicting the retail market hourly electricity tariff rate has been studied. Modeling was performed on the publicly available data of electricity prices in the Novosibirsk region (Russia) for 2018–2020. It was found out that Extreme Gradient Boosting over regression decision trees can predict the hourly electricity tariff rate for a month ahead with a mean absolute percentage error of 4 %.","PeriodicalId":272064,"journal":{"name":"2021 XV International Scientific-Technical Conference on Actual Problems Of Electronic Instrument Engineering (APEIE)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123143916","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 : 2021-11-19DOI: 10.1109/apeie52976.2021.9647692
V. Tokarev, S. Brovanov
Active power filters are considered to be an efficient solution for compensating the disturbances of current and reactive power in three-phase power distribution networks with non-linear loads. In this article, a parallel active power filter composed of two three-level converters connected in parallel is presented. The active power filter is intended to be part of a three-phase power distribution network with a nonlinear load. The dependences of the total harmonics distortion of the phase currents on the power consumed by the load in the case of converters working under the scalar or space vector pulse width modulation are investigated. In addition, the power losses in the elements of the converters are estimated. At medium power, a double-converter active power filter is beneficial over a single-converter active power filter, providing lower total harmonic distortion values. The space vector pulse width modulation ensures better compensation of harmonics than the scalar one. At high power, single-converter active power filters cannot compensate the current harmonics. With a double-converter active power filter, compensation is successful, and the total harmonics distortion is only 5%. Importantly, at high power, the total losses in the components of a single-converter active power filter are nearly twice the losses in the components of a double-converter filter.
{"title":"An Investigation of the Performance of Single- and Double-Converter Parallel Active Power Filters under Various Modulation Modes","authors":"V. Tokarev, S. Brovanov","doi":"10.1109/apeie52976.2021.9647692","DOIUrl":"https://doi.org/10.1109/apeie52976.2021.9647692","url":null,"abstract":"Active power filters are considered to be an efficient solution for compensating the disturbances of current and reactive power in three-phase power distribution networks with non-linear loads. In this article, a parallel active power filter composed of two three-level converters connected in parallel is presented. The active power filter is intended to be part of a three-phase power distribution network with a nonlinear load. The dependences of the total harmonics distortion of the phase currents on the power consumed by the load in the case of converters working under the scalar or space vector pulse width modulation are investigated. In addition, the power losses in the elements of the converters are estimated. At medium power, a double-converter active power filter is beneficial over a single-converter active power filter, providing lower total harmonic distortion values. The space vector pulse width modulation ensures better compensation of harmonics than the scalar one. At high power, single-converter active power filters cannot compensate the current harmonics. With a double-converter active power filter, compensation is successful, and the total harmonics distortion is only 5%. Importantly, at high power, the total losses in the components of a single-converter active power filter are nearly twice the losses in the components of a double-converter filter.","PeriodicalId":272064,"journal":{"name":"2021 XV International Scientific-Technical Conference on Actual Problems Of Electronic Instrument Engineering (APEIE)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129907639","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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