Pub Date : 2022-01-26DOI: 10.1109/IWED54598.2022.9722595
A. Dianov
Field-weakening mode of operation is an important feature of modern permanent magnet (PM) synchronous electrical drives, which overcomes speed limitation due to the lack of supplying voltage and increases their speed operational range. Therefore, field-weakening (FW) algorithm is an inalienable part of the overwhelming majority of control systems for PM synchronous motors. At the same time, seamless integration of the filed-weakening techniques into the conventional control systems is not considered well and some reported solutions may decrease system reaction time and cause stability issues. This paper proposes an improved field-weakening strategy, which includes optimized FW controller and novel current limitation strategy in the field-weakening mode. These features simplify structure of the resulting control scheme, decrease computational burden on the microcontrollers and decreases system reaction time, caused by wind-up of the speed controller operating in parallel with the conventional FW algorithms.
{"title":"Optimized Field-Weakening Strategy for Control of PM Synchronous Motors","authors":"A. Dianov","doi":"10.1109/IWED54598.2022.9722595","DOIUrl":"https://doi.org/10.1109/IWED54598.2022.9722595","url":null,"abstract":"Field-weakening mode of operation is an important feature of modern permanent magnet (PM) synchronous electrical drives, which overcomes speed limitation due to the lack of supplying voltage and increases their speed operational range. Therefore, field-weakening (FW) algorithm is an inalienable part of the overwhelming majority of control systems for PM synchronous motors. At the same time, seamless integration of the filed-weakening techniques into the conventional control systems is not considered well and some reported solutions may decrease system reaction time and cause stability issues. This paper proposes an improved field-weakening strategy, which includes optimized FW controller and novel current limitation strategy in the field-weakening mode. These features simplify structure of the resulting control scheme, decrease computational burden on the microcontrollers and decreases system reaction time, caused by wind-up of the speed controller operating in parallel with the conventional FW algorithms.","PeriodicalId":57487,"journal":{"name":"国际电力","volume":"52 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85675015","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 : 2022-01-26DOI: 10.1109/IWED54598.2022.9722598
Daria Bondarenko, I. Voronin, P. Voronin, O. Osipov
The paper presents a comparative analysis of the efficiency of two main options of soft switching at zero current in high-power inverters. Based on the phase trajectories for both options, the maximum currents and voltages of the resonant circuit are estimated. The balance of consumed and stored energy of the resonant circuit is calculated. The advantages and disadvantages of both options are shown for the optimal choice of their application.
{"title":"The Efficiency Analysis of Resonant Circuits in High-Power Soft Switching Mode Inverters","authors":"Daria Bondarenko, I. Voronin, P. Voronin, O. Osipov","doi":"10.1109/IWED54598.2022.9722598","DOIUrl":"https://doi.org/10.1109/IWED54598.2022.9722598","url":null,"abstract":"The paper presents a comparative analysis of the efficiency of two main options of soft switching at zero current in high-power inverters. Based on the phase trajectories for both options, the maximum currents and voltages of the resonant circuit are estimated. The balance of consumed and stored energy of the resonant circuit is calculated. The advantages and disadvantages of both options are shown for the optimal choice of their application.","PeriodicalId":57487,"journal":{"name":"国际电力","volume":"19 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81375066","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 : 2022-01-26DOI: 10.1109/IWED54598.2022.9722582
Omar Alassaf, A. Lukin, G. Demidova, Gleb Kozlov, Andrey Volkhontsev, N. Poliakov
Magnus wind turbine is a type of small wind turbine for private houses in the Energy 4.0 concept. Due to its novelty, there is no strong topology for such facilities. In this paper, the construction of the Magnus wind turbine is modified for the best energy efficiency. The cylindric blades as a main part of the Magnus wind turbine which are generally producing the Magnus Force was also modified. The control system for the cylindric blades based on brushless direct current motor was performed.
{"title":"Cylindrical Blades Magnus Wind Turbine Optimization and Control System","authors":"Omar Alassaf, A. Lukin, G. Demidova, Gleb Kozlov, Andrey Volkhontsev, N. Poliakov","doi":"10.1109/IWED54598.2022.9722582","DOIUrl":"https://doi.org/10.1109/IWED54598.2022.9722582","url":null,"abstract":"Magnus wind turbine is a type of small wind turbine for private houses in the Energy 4.0 concept. Due to its novelty, there is no strong topology for such facilities. In this paper, the construction of the Magnus wind turbine is modified for the best energy efficiency. The cylindric blades as a main part of the Magnus wind turbine which are generally producing the Magnus Force was also modified. The control system for the cylindric blades based on brushless direct current motor was performed.","PeriodicalId":57487,"journal":{"name":"国际电力","volume":"65 6 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87309961","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 : 2022-01-26DOI: 10.1109/IWED54598.2022.9722576
Shahab Khalghani, L. Aarniovuori, J. Pyrhönen
An analytical calculation model is constructed to determine the losses of a 5-kW squirrel cage induction machine at multiple operation points at different speeds. The losses are analyzed and compared with measured results to emulate the converter supply according to IEC standard loss segregation. The operation area includes load torque values below 125% of the rated torque and speeds below the rated operation point. The model utilizes motor design data, including geometry details and material parameters, to predict power losses in the induction motor and system. This kind of tool is useful to rapidly assess all power losses in an induction motor based on different imposed factors including voltage, load, stator frequency and ambient temperature.
{"title":"Evaluation of 5 kW Converter-Fed Induction Motor Losses by Analytical Calculation","authors":"Shahab Khalghani, L. Aarniovuori, J. Pyrhönen","doi":"10.1109/IWED54598.2022.9722576","DOIUrl":"https://doi.org/10.1109/IWED54598.2022.9722576","url":null,"abstract":"An analytical calculation model is constructed to determine the losses of a 5-kW squirrel cage induction machine at multiple operation points at different speeds. The losses are analyzed and compared with measured results to emulate the converter supply according to IEC standard loss segregation. The operation area includes load torque values below 125% of the rated torque and speeds below the rated operation point. The model utilizes motor design data, including geometry details and material parameters, to predict power losses in the induction motor and system. This kind of tool is useful to rapidly assess all power losses in an induction motor based on different imposed factors including voltage, load, stator frequency and ambient temperature.","PeriodicalId":57487,"journal":{"name":"国际电力","volume":"45 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90694200","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 : 2022-01-26DOI: 10.1109/IWED54598.2022.9722578
S. Autsou, T. Vaimann, A. Rassõlkin, B. Asad, K. Kudelina, Van Khang Hyunh
Condition monitoring of any electromechanical equipment is an essential tool to extend lifetime of the device and provide reliable work of the whole system. Due to friction mechanical subsystem is usually the weakest part of electromechanical equipment that. Early-stage diagnosis of that type of faults may save the equipment from serious failures. In this paper the model of tooth belt transmission of the Hirata cartesian robot is presented. Transmission operational principles and mathematical model reviewed from the point of fault diagnosis of the system. Importance of fault diagnosis of the transmission and diagnostics methodology is highlighted. Applied fault diagnostic method is based on Fast Fourier Transform (FFT) method. The simulation results of faulty tooth belt transmission are analyzed.
{"title":"Fault Diagnosis of the Tooth Belt Transmission of Cartesian Robot","authors":"S. Autsou, T. Vaimann, A. Rassõlkin, B. Asad, K. Kudelina, Van Khang Hyunh","doi":"10.1109/IWED54598.2022.9722578","DOIUrl":"https://doi.org/10.1109/IWED54598.2022.9722578","url":null,"abstract":"Condition monitoring of any electromechanical equipment is an essential tool to extend lifetime of the device and provide reliable work of the whole system. Due to friction mechanical subsystem is usually the weakest part of electromechanical equipment that. Early-stage diagnosis of that type of faults may save the equipment from serious failures. In this paper the model of tooth belt transmission of the Hirata cartesian robot is presented. Transmission operational principles and mathematical model reviewed from the point of fault diagnosis of the system. Importance of fault diagnosis of the transmission and diagnostics methodology is highlighted. Applied fault diagnostic method is based on Fast Fourier Transform (FFT) method. The simulation results of faulty tooth belt transmission are analyzed.","PeriodicalId":57487,"journal":{"name":"国际电力","volume":"29 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81886103","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 : 2022-01-26DOI: 10.1109/IWED54598.2022.9722597
Lukin Aleksandr, G. Demidova, Omar Alassaf, D. Lukichev, A. Rassõlkin, T. Vaimann
Wind turbines play an important role in energy generation using renewable sources. The wind is very changeable, and such turbines require techniques for finding and tracking maximum power density. The presented work includes an overview of maximum power point tracking techniques applicable to small-size wind turbines based on the Magnus effect. An overview of existing algorithms is presented. Overviewed algorithms are assessed using a simulation in MATLAB with a model of the experimental Magnus effect wind turbine.
{"title":"MPPT Algorithms for Wind Turbines: Review and Comparison","authors":"Lukin Aleksandr, G. Demidova, Omar Alassaf, D. Lukichev, A. Rassõlkin, T. Vaimann","doi":"10.1109/IWED54598.2022.9722597","DOIUrl":"https://doi.org/10.1109/IWED54598.2022.9722597","url":null,"abstract":"Wind turbines play an important role in energy generation using renewable sources. The wind is very changeable, and such turbines require techniques for finding and tracking maximum power density. The presented work includes an overview of maximum power point tracking techniques applicable to small-size wind turbines based on the Magnus effect. An overview of existing algorithms is presented. Overviewed algorithms are assessed using a simulation in MATLAB with a model of the experimental Magnus effect wind turbine.","PeriodicalId":57487,"journal":{"name":"国际电力","volume":"40 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81388519","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 : 2022-01-26DOI: 10.1109/IWED54598.2022.9722373
Polyakov Vladimir, Plotnikov Iurii
The paper deals with the problem of the voltage stabilization in the DC link of a frequency converter with an PWM inverter, which is part of AC drive with a frequency method of speed control. To stabilize the voltage in the DC link, energy storage technology is used, which is implemented with using an energy storage device based on supercapacitors, which is connected to the DC link by means of bi-directional DC-DC converter. The work uses the concept of stabilizing the DC bus voltage by compensating the PWM inverter load current with the external current of the energy storage device. The energy storage device is equipped with a single-loop tracking current control system. The current control system is based on the combined control method. The aim of the work is to improve the accuracy of voltage stabilization in the DC link of frequency converter. The sensitivity of the DC link voltage to various disturbing factors is investigated. The theoretical analysis of the error coefficient of the current control system is carried out. The simulation of the electric drive is carried out without and taking into account the discreteness of the DC-DC converter. The research results can be useful in the development of supercapacitor energy storage control systems for various applications.
{"title":"The Accuracy Increasing of Voltage Stabilization on the Input of PWM Inverter in the Electric Drive with Energy Storage based on Supercapacitors","authors":"Polyakov Vladimir, Plotnikov Iurii","doi":"10.1109/IWED54598.2022.9722373","DOIUrl":"https://doi.org/10.1109/IWED54598.2022.9722373","url":null,"abstract":"The paper deals with the problem of the voltage stabilization in the DC link of a frequency converter with an PWM inverter, which is part of AC drive with a frequency method of speed control. To stabilize the voltage in the DC link, energy storage technology is used, which is implemented with using an energy storage device based on supercapacitors, which is connected to the DC link by means of bi-directional DC-DC converter. The work uses the concept of stabilizing the DC bus voltage by compensating the PWM inverter load current with the external current of the energy storage device. The energy storage device is equipped with a single-loop tracking current control system. The current control system is based on the combined control method. The aim of the work is to improve the accuracy of voltage stabilization in the DC link of frequency converter. The sensitivity of the DC link voltage to various disturbing factors is investigated. The theoretical analysis of the error coefficient of the current control system is carried out. The simulation of the electric drive is carried out without and taking into account the discreteness of the DC-DC converter. The research results can be useful in the development of supercapacitor energy storage control systems for various applications.","PeriodicalId":57487,"journal":{"name":"国际电力","volume":"9 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89521803","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 : 2022-01-26DOI: 10.1109/IWED54598.2022.9722579
S. Tecle, Nakataev Anton Andreevich, A. Ziuzev
This paper presents a strategy to emulate a reduced scale of sucker rod pump using laboratory test bench. The strategy is based on combination of software and hardware system. Torque reference is generated using the proposed strategy based on real time model of sucker rod pump that runs in LabVIEW. The output of encoder and torque sensor are integrated through NI PCI- 6221 data acquisition card to the real time platform. The performance of the experimental test bench is evaluated using current, voltage, speed, and torque measurements and power calculations. The experimental results are compared to simulation results. The results indicate the capability of this test bench to serve as a platform for conducting experimental studies on sucker rod pump.
{"title":"An Experimental Test Bench for Studying Sucker Rod Pump","authors":"S. Tecle, Nakataev Anton Andreevich, A. Ziuzev","doi":"10.1109/IWED54598.2022.9722579","DOIUrl":"https://doi.org/10.1109/IWED54598.2022.9722579","url":null,"abstract":"This paper presents a strategy to emulate a reduced scale of sucker rod pump using laboratory test bench. The strategy is based on combination of software and hardware system. Torque reference is generated using the proposed strategy based on real time model of sucker rod pump that runs in LabVIEW. The output of encoder and torque sensor are integrated through NI PCI- 6221 data acquisition card to the real time platform. The performance of the experimental test bench is evaluated using current, voltage, speed, and torque measurements and power calculations. The experimental results are compared to simulation results. The results indicate the capability of this test bench to serve as a platform for conducting experimental studies on sucker rod pump.","PeriodicalId":57487,"journal":{"name":"国际电力","volume":"40 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73730163","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 : 2022-01-26DOI: 10.1109/IWED54598.2022.9722375
L. Rassudov, Alina Korunets
operating real hardware is a fundamental engineering skill. For this reason, hands-on classes involving real equipment is an essential tool in engineering education. At the same time in many cases there are certain limitations related to in-person training of students: hardware availability, hardly modifiable functionality for each student and educational goal, the increased demand on remote learning and safety aspects. Modern information technologies enable various means for partially solving the mentioned issues by providing remote access, VR-technologies, digital twins, etc. The paper provides a brief overview of aspects related to introducing virtual labs into educational process, with the main focus on the requirement for the virtual hardware, such as an electric power drive system, should replicate processes with time resolution in order of several milliseconds. And the interaction of the equipment with the student should be done in a way there is a feeling of a real object, necessitating low response time in order of hundreds of milliseconds. This requires high priority of computational power allocation for mathematical model calculation as well as high communication channel bandwidth between the computation power source and the user interface. The paper presents an example of such a server deployed virtual laboratory. The functionality was inspired by that of real equipment installed at Energy saving electric power drive laboratory at the Department of Electric Drives of Moscow Power Engineering Institute. Apart from substantively replicating the functionality and feel of high-dynamic hardware real-time operation, it enables to provide each student with an individual virtual equipment set to be explored, tuned or diagnosed. Virtual labs of the kind proved to be an effective engineering education tool for remote learning, giving new opportunities in improving the in-person training process as well.
{"title":"Virtual Labs: an Effective Engineering Education Tool for Remote Learning and not only","authors":"L. Rassudov, Alina Korunets","doi":"10.1109/IWED54598.2022.9722375","DOIUrl":"https://doi.org/10.1109/IWED54598.2022.9722375","url":null,"abstract":"operating real hardware is a fundamental engineering skill. For this reason, hands-on classes involving real equipment is an essential tool in engineering education. At the same time in many cases there are certain limitations related to in-person training of students: hardware availability, hardly modifiable functionality for each student and educational goal, the increased demand on remote learning and safety aspects. Modern information technologies enable various means for partially solving the mentioned issues by providing remote access, VR-technologies, digital twins, etc. The paper provides a brief overview of aspects related to introducing virtual labs into educational process, with the main focus on the requirement for the virtual hardware, such as an electric power drive system, should replicate processes with time resolution in order of several milliseconds. And the interaction of the equipment with the student should be done in a way there is a feeling of a real object, necessitating low response time in order of hundreds of milliseconds. This requires high priority of computational power allocation for mathematical model calculation as well as high communication channel bandwidth between the computation power source and the user interface. The paper presents an example of such a server deployed virtual laboratory. The functionality was inspired by that of real equipment installed at Energy saving electric power drive laboratory at the Department of Electric Drives of Moscow Power Engineering Institute. Apart from substantively replicating the functionality and feel of high-dynamic hardware real-time operation, it enables to provide each student with an individual virtual equipment set to be explored, tuned or diagnosed. Virtual labs of the kind proved to be an effective engineering education tool for remote learning, giving new opportunities in improving the in-person training process as well.","PeriodicalId":57487,"journal":{"name":"国际电力","volume":"15 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75148642","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 : 2022-01-26DOI: 10.1109/IWED54598.2022.9722580
L. Szabó
The power density of electronic devices continues to increase. While they are getting smaller, the amount of heat they generate is dramatically increasing. If using conventional cooling systems (heatsinks, heat pipes or various heat exchangers), their size and mass must be increased beyond limits, which is unacceptable especially in mobile applications (such as electric traction, aircraft industry, etc.). Therefore, new materials and fabrication technologies are urgently needed. Additive manufacturing, a revolutionary fabrication method, could be the key to these highly anticipated developments. This novel technology is perfectly fitted to the small-scale fabrication of specifically customized cooling systems. In this paper, the possibility of applying these new technologies to several cooling systems using enhanced thermally conductive materials is surveyed. At the same time, the main advantages brought about by this technological advance are highlighted.
{"title":"Additive Manufacturing of Cooling Systems Used in Power Electronics. A Brief Survey","authors":"L. Szabó","doi":"10.1109/IWED54598.2022.9722580","DOIUrl":"https://doi.org/10.1109/IWED54598.2022.9722580","url":null,"abstract":"The power density of electronic devices continues to increase. While they are getting smaller, the amount of heat they generate is dramatically increasing. If using conventional cooling systems (heatsinks, heat pipes or various heat exchangers), their size and mass must be increased beyond limits, which is unacceptable especially in mobile applications (such as electric traction, aircraft industry, etc.). Therefore, new materials and fabrication technologies are urgently needed. Additive manufacturing, a revolutionary fabrication method, could be the key to these highly anticipated developments. This novel technology is perfectly fitted to the small-scale fabrication of specifically customized cooling systems. In this paper, the possibility of applying these new technologies to several cooling systems using enhanced thermally conductive materials is surveyed. At the same time, the main advantages brought about by this technological advance are highlighted.","PeriodicalId":57487,"journal":{"name":"国际电力","volume":"1 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90901852","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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