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ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)最新文献

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DESIGN OF AN HTS SUPERCONDUCTING ELECTROMAGNET INTENSE AND UNIFORM MAGNETIC FIELD GENERATOR 高温超导电磁体强均匀磁场发生器的设计
ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS) Pub Date : 2023-03-09 DOI: 10.36801/apme.2022.1.15
Goerge Dumitru, I. Dobrin, D. Enache
{"title":"DESIGN OF AN HTS SUPERCONDUCTING ELECTROMAGNET INTENSE AND UNIFORM MAGNETIC FIELD GENERATOR","authors":"Goerge Dumitru, I. Dobrin, D. Enache","doi":"10.36801/apme.2022.1.15","DOIUrl":"https://doi.org/10.36801/apme.2022.1.15","url":null,"abstract":"The paper presents the important elements for the design of an HTS superconducting electromagnet, generator of an intense magnetic field (5T) and of high uniformity (<1%). To establish its geometric and functional parameters, the value of the induction of the generated magnetic field and the uniformity in its central area were taken into consideration. Numerical modeling of the generated magnetic field was performed in Comsol Multiphysics. The characteristics of the YBCO type HTS superconducting material were also taken into account. The coils will be made in the form of double buckets of superconducting tape, the chosen configuration being Helmholtz type. In this way, the central magnetic field area of ​​the electromagnet is accessible for applications from two directions: vertical and horizontal.","PeriodicalId":185216,"journal":{"name":"ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125229142","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}
引用次数: 0
ON THE REPRESENTATIVE SPACE PHASOR CONCEPT FROM THE DYNAMIC MODEL OF THE THREE-PHASE INDUCTION MACHINE 从三相感应电机的动态模型出发，提出了代表性空间相量的概念
ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS) Pub Date : 2023-03-09 DOI: 10.36801/apme.2022.1.4
M. Radulescu
{"title":"ON THE REPRESENTATIVE SPACE PHASOR CONCEPT FROM THE DYNAMIC MODEL OF THE THREE-PHASE INDUCTION MACHINE","authors":"M. Radulescu","doi":"10.36801/apme.2022.1.4","DOIUrl":"https://doi.org/10.36801/apme.2022.1.4","url":null,"abstract":"In the paper, based on the linear dynamic behavior models of the electrical and magnetic subsystems of the induction machine with three-phase symmetrical stator winding and polyphase rotor winding (cage type) in short circuit, the values ​​are represented, in the complex plane confused with the cross-sectional plane of the machine and the instantaneous polar angular positions of the amplitudes of the progressive (spinning) plane waves of the instantaneous resultant solenations of the machine windings, and correspondingly, the spatial phasors representative of the instantaneous electrical circuit scalar quantities of the stator phase windings and rotor equivalents of the machine are defined. The metric (length and orientation) of these representative spatial phasors allows their physical significance to be revealed.","PeriodicalId":185216,"journal":{"name":"ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125591582","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}
引用次数: 0
NUMERICAL ANALYSIS OF A SIMPLIFIED MAGNETIC GEARBOX FOR ENERGY HARVESTING APPLICATIONS 用于能量收集的简化磁齿轮箱的数值分析
ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS) Pub Date : 2023-03-09 DOI: 10.36801/apme.2022.1.6
Yelda Veli, N. Tănase, C. Ilie, A. Morega
{"title":"NUMERICAL ANALYSIS OF A SIMPLIFIED MAGNETIC GEARBOX FOR ENERGY HARVESTING APPLICATIONS","authors":"Yelda Veli, N. Tănase, C. Ilie, A. Morega","doi":"10.36801/apme.2022.1.6","DOIUrl":"https://doi.org/10.36801/apme.2022.1.6","url":null,"abstract":"The paper assesses the mechanical torque of a two-dimensional magnetic gearbox used in energy harvesting applications by increasing wind turbines' low mechanical power speed. The simplified device doesn’t consider the rotational speed transmission from the inner magnetic rotor to the outer magnetic rotor, which is considered mechanically blocked. The numerical simulation analysis considers a parametric study to address the influence of the dimensions of the outer magnets on mechanical torque by introducing a shape factor and by maintaining the same area of the outer rotor magnets. The results are obtained using the finite element method (FEM).","PeriodicalId":185216,"journal":{"name":"ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125503125","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}
引用次数: 0
PROGRAMUL ȘI REZUMATELE SME’22, Ediţia a XVIII-a
ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS) Pub Date : 2023-03-09 DOI: 10.36801/apme.2022.1.17
{"title":"PROGRAMUL ȘI REZUMATELE SME’22, Ediţia a XVIII-a","authors":"","doi":"10.36801/apme.2022.1.17","DOIUrl":"https://doi.org/10.36801/apme.2022.1.17","url":null,"abstract":"PROGRAM AND SUMMARIES OF THE PAPERS PRESENTED","PeriodicalId":185216,"journal":{"name":"ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)","volume":"386 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122988510","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}
引用次数: 0
ANALYSIS OF SOME GEOMETRIC PARAMETERS OF THE INDUCTIVE COUPLER INTENDED FOR HIGH POWER WIRELESS SYSTEMS 大功率无线系统用电感耦合器的几何参数分析
ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS) Pub Date : 2023-03-09 DOI: 10.36801/apme.2022.1.8
T. Tudorache, A. Marinescu, A. Vintilă
{"title":"ANALYSIS OF SOME GEOMETRIC PARAMETERS OF THE INDUCTIVE COUPLER INTENDED FOR HIGH POWER WIRELESS SYSTEMS","authors":"T. Tudorache, A. Marinescu, A. Vintilă","doi":"10.36801/apme.2022.1.8","DOIUrl":"https://doi.org/10.36801/apme.2022.1.8","url":null,"abstract":"One of the essential components of a wireless high-power transfer system for heavy-duty electric vehicles is the inductive coupler. The efficiency of the wireless power transfer system strongly depends on the geometric parameters of the inductive coupler, which in turn have an important effect on the electromagnetic parameters of the whole system. The transmitting (Tx) and receiving (Rx) coils of the inductive coupler proposed in this paper have a Double-D planar structure and are located on magnetic cores made of magnetic concrete (Tx) and ferrite (Rx), respectively. The study of the parameters of the inductive coupler was carried out with the help of the finite element method, using the Flux ® field calculation software package.","PeriodicalId":185216,"journal":{"name":"ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132381149","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}
引用次数: 1
ELECTROMAGNETIC AND THERMAL FIELD STUDIES IN REDUNDANT ELECTRIC MOTORS 冗余电动机的电磁和热场研究
ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS) Pub Date : 2023-03-09 DOI: 10.36801/apme.2022.1.5
Ioana Ionică, M. Modreanu, A. Morega
{"title":"ELECTROMAGNETIC AND THERMAL FIELD STUDIES IN REDUNDANT ELECTRIC MOTORS","authors":"Ioana Ionică, M. Modreanu, A. Morega","doi":"10.36801/apme.2022.1.5","DOIUrl":"https://doi.org/10.36801/apme.2022.1.5","url":null,"abstract":"This paper proposes the electromagnetic and thermal analysis for a two-channel limited-angle torque motor using three-dimensional numerical models. The two-channel limited-angle torque motor that we present in the paper, unlike the classic torque motor, provides the role of two limited-angle torque motors. It represents a solution for applications where high functional performance, overall dimensions, weight and operational safety are critical. Numerical analysis will be used in the design in order to establish an optimal constructive solution from the point of view of all the engine requirements established in the Technical Specification","PeriodicalId":185216,"journal":{"name":"ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115133244","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}
引用次数: 0
QUALITATIVE STUDY ON THE IMPACT OF ELECTRICAL ENERGY QUALITY PARAMETERS ON THE OPERATION OF ASYNCHRONOUS MOTORS 电能质量参数对异步电动机运行影响的定性研究
ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS) Pub Date : 2023-03-09 DOI: 10.36801/apme.2022.1.3
A. Dumitru, E. Cazacu, L. Petrescu
{"title":"QUALITATIVE STUDY ON THE IMPACT OF ELECTRICAL ENERGY QUALITY PARAMETERS ON THE OPERATION OF ASYNCHRONOUS MOTORS","authors":"A. Dumitru, E. Cazacu, L. Petrescu","doi":"10.36801/apme.2022.1.3","DOIUrl":"https://doi.org/10.36801/apme.2022.1.3","url":null,"abstract":"One of the most common requirements in modern industrial applications is to minimize the costs associated with the operation, maintenance and possible repairs of the component systems. In industrial processes, induction motors are the most commonly used electromechanical converters in electrical drive systems. The extensive development of power electronics, as well as the relatively low manufacturing cost of asynchronous motors has determined a very high incidence of the presence of induction motor drive systems in industrial systems. The use of semiconductor devices to control the drive parameters of induction motors facilitates the tuning of the system and thus greatly improves its flexibility. However, the optimal use of such electric motors is limited due to the possibility of specific defects caused by the quality of the power supply. In this context, this paper proposes an analysis of the defects that frequently appear in the case of induction motors in industrial electrical drive systems as a result of deviations from the quality of the electrical energy of their power system parameters. Two deviations from the energy quality are mainly investigated, namely, the imbalance of the voltage value applied to the motor phases, respectively the harmonic distortions of the waveforms of the voltages applied to the motor. At the same time, an analysis of the failure rate is made according to various characteristics of the induction motors.","PeriodicalId":185216,"journal":{"name":"ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130989122","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}
引用次数: 0
SIMULATION OF ELECTRO-THERMAL CONDITION IN A FAULTY LOW-CURRENT CONTACT 故障小电流触点的电热状态模拟
ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS) Pub Date : 2023-03-09 DOI: 10.36801/apme.2022.1.10
Gideon-Gwanzuwang Dankat, L. Dumitran
{"title":"SIMULATION OF ELECTRO-THERMAL CONDITION IN A FAULTY LOW-CURRENT CONTACT","authors":"Gideon-Gwanzuwang Dankat, L. Dumitran","doi":"10.36801/apme.2022.1.10","DOIUrl":"https://doi.org/10.36801/apme.2022.1.10","url":null,"abstract":"It has been suggested in earlier literature that the accuracy of the thermal simulation of electrical connectors is closely related to contact resistance. Contact resistance in electrical connectors occurs due to both constriction resistance (caused by narrow paths in which the current flows through the electrical connector) and film resistance (oxidized metals caused by the high resistivity of materials and impurities from the atmosphere etc.). This paper reviews the oxidation and wear affecting electrical connectors by proposing a thermal-electrical coupled finite element simulation (FEM) of the contact temperature rise of a simple contact model in COMSOL Multiphysics.","PeriodicalId":185216,"journal":{"name":"ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129139297","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}
引用次数: 0
SIMULATION OF THE TRAJECTORY OF AN ELECTRIC WHEELCHAIR CONTROLLED THROUGH PROGRAMMABLE LOGIC CONTROLLER AND HMI 通过可编程逻辑控制器和人机界面控制电动轮椅的轨迹仿真
ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS) Pub Date : 2023-03-09 DOI: 10.36801/apme.2022.1.12
A. Cîrstoiu, A. Chirilă, I. Deaconu
{"title":"SIMULATION OF THE TRAJECTORY OF AN ELECTRIC WHEELCHAIR CONTROLLED THROUGH PROGRAMMABLE LOGIC CONTROLLER AND HMI","authors":"A. Cîrstoiu, A. Chirilă, I. Deaconu","doi":"10.36801/apme.2022.1.12","DOIUrl":"https://doi.org/10.36801/apme.2022.1.12","url":null,"abstract":"This paper presents a software module made by means of a programmable logic controller and an HMI (Human Machine Interface), designed to control the movement of an electric wheelchair. By developing this module, a major advantage is offered to people with disabilities, who have movement difficulties. By implementing this command on a wheelchair, people can move independently using this machine that can be controlled from a touch screen. In this direction, the user has the possibility to choose the following directions of movement of the car: forward-backward and left-right, as well as the possibility to impose the speed of movement. The software program was created using ladder diagram language, and the user interface is provided through an HMI.","PeriodicalId":185216,"journal":{"name":"ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116514517","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}
引用次数: 0
NUMERICAL ANALYSES ON THE RESPONSES OF UNIMORPH AND BIMORPH PIEZOELECTRIC HARVESTERS IN TIME DOMAIN 单晶和双晶压电采集器时域响应的数值分析
ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS) Pub Date : 2023-03-09 DOI: 10.36801/apme.2022.1.14
Yelda Veli, Claudia Săvescu, A. Morega, D. Comeagă
{"title":"NUMERICAL ANALYSES ON THE RESPONSES OF UNIMORPH AND BIMORPH PIEZOELECTRIC HARVESTERS IN TIME DOMAIN","authors":"Yelda Veli, Claudia Săvescu, A. Morega, D. Comeagă","doi":"10.36801/apme.2022.1.14","DOIUrl":"https://doi.org/10.36801/apme.2022.1.14","url":null,"abstract":"The paper presents the assessment of the electric output rendered by a unimorph and a bimorph piezoelectric harvester, with one and two active piezoceramic wafers, using numerical simulations. Expected sinusoidal voltages were obtained in a time-dependent study, with a time step corresponding to the eigenfrequency found after conducting an Eigenfrequency study. The terminal voltages obtained agree with the Euler-Bernoulli beam theory and with the distance of the piezoelectric layers from the neutral fiber. By adding an electric circuit node to the electric field problem to form a closed internal circuit, a single unified sinusoidal voltage response should be obtained, coinciding with the input vibration signal. The independent voltages of the layers of a piezoelectric structure with more than one layer (usually two or four) cannot be observed experimentally, as a harvester has only two terminals that pick the overall electric response from all the layers, giving a single alternating voltage output.","PeriodicalId":185216,"journal":{"name":"ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)","volume":"541 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116067035","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}
引用次数: 0
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