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

{"title":"INTEGRATION OF RESEARCH RESULTS IN THE PRODUCTION OF THE SYNCHRONOUS MOTOR FOR ELECTRIC BUSES","authors":"Emil Tudor, I. Berca, Alexandru-Ionel Constantin, C. Dumitru, M. Ilie","doi":"10.36801/apme.2022.1.7","DOIUrl":"https://doi.org/10.36801/apme.2022.1.7","url":null,"abstract":"The historical manufacturer of electric traction machines for trams and trolleybuses, the innovative commercial company UMEB, has initiated a joint project with the National Institute of Research and Development for Electrical Engineering ICPE-CA, to design and produce a new line of electric machines that achieve the desired power, starting torque, speed range and operating temperatures. Following the requests received by UMEB from the integrators of vehicles for the transport of people, the need arose to produce an electric motor characterized by a high torque density and a wide range of operating speeds. The development team selected the technical solution of permanent magnet and liquid-cooled synchronous motor, carried out the design theme, motor sizing, numerical simulation validation of the project, motor component design, their execution, assembly of the prototype motor and its testing. The resulting TN-EB 21 prototype engine is presented during this innovative development process.","PeriodicalId":185216,"journal":{"name":"ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)","volume":"215 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":"131690521","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}

{"title":"NEW SOLUTIONS FOR MAKING ELECTRIC MACHINES WITH HIGH SPECIFIC POWERS FOR PROPULSION SYSTEMS OF ELECTRIC AND HYBRID VEHICLES","authors":"A. Craciunescu","doi":"10.36801/apme.2022.1.16","DOIUrl":"https://doi.org/10.36801/apme.2022.1.16","url":null,"abstract":"Within the propulsion systems of electric or hybrid vehicles, road, naval or air, electric cars represent some of the main components that determine the weight of these systems. As a result, the realization of light electric propulsion systems requires the use of electric machines with high specific powers. In this work, we will present the results published in recent years in the specialized literature regarding the realization of electric car cooling systems in order to obtain high specific powers. New technologies for dissipating the heat generated by the energy losses in these machines will be presented, technologies that combine both passive cooling structures and active cooling structures, such as those using heat pumps. Also, research results will be presented regarding the realization of some components of these cooling structures using additive manufacturing technology, made with 3D printing systems, a technology that has evolved rapidly in recent years offering a new way to easily create, from various conductive, insulating or magnetic materials of parts with complex geometry, such as electric machine windings with direct incorporation of ceramic insulation, magnetic circuits with permanent magnets or thermal heat exchanger circuits.","PeriodicalId":185216,"journal":{"name":"ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)","volume":"54 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":"122812606","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}

{"title":"ASPECTS REGARDING THE SIMULATION OF THE OPERATION OF THE CONTROL PART FOR A THREE-PHASE VOLTAGE INVERTER USING OPEN SOURCE SOFTWARE TOOLS","authors":"D. Stănescu, Marian Cosmin Bușe, I. Sirbu, L. Mandache, R. Dinu","doi":"10.36801/apme.2022.1.9","DOIUrl":"https://doi.org/10.36801/apme.2022.1.9","url":null,"abstract":"In this paper, a series of aspects regarding the simulation of the control part related to a three-phase voltage inverter with PWM modulation are presented. The simulations were carried out using an open source software. The advantage of using this type of software is related to the fact that simulations can be carried out quickly, results can be validated, analyzes can be made, without the need for commercial software tools.","PeriodicalId":185216,"journal":{"name":"ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)","volume":"39 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":"133278322","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}

{"title":"IN MEMORIAM PROFESSOR ALEXANDRU FRANSUA","authors":"","doi":"10.36801/apme.2022.1.1","DOIUrl":"https://doi.org/10.36801/apme.2022.1.1","url":null,"abstract":"","PeriodicalId":185216,"journal":{"name":"ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)","volume":"25 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":"123356656","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}

{"title":"IN MEMORIAM EUGENIU NICULESCU","authors":"","doi":"10.36801/apme.2022.1.2","DOIUrl":"https://doi.org/10.36801/apme.2022.1.2","url":null,"abstract":"","PeriodicalId":185216,"journal":{"name":"ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)","volume":"46 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":"133473471","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}

{"title":"ANALYSIS OF REACTIVE POWER COMPENSATION WITH PASSIVE CIRCUIT ELEMENTS FOR GRID-CONNECTED PHOTOVOLTAIC PLANTS","authors":"Dan-Valeriu Groşanu, E. Cazacu, L. Petrescu","doi":"10.36801/apme.2022.1.13","DOIUrl":"https://doi.org/10.36801/apme.2022.1.13","url":null,"abstract":"The work represents the optimized solution for the selection of the reactive power compensation system for an on-grid photovoltaic plant with an installed power of 8 MW. The reactive power, of significant values, is mainly due to the length of the medium voltage cable that connects the photovoltaic plant to the connection station located at a distance of 10 km. Thus, a critical analysis is presented, with a technical-economic foundation of power factor correction solutions. The operation of the power plant's correction system was monitored both during the day (while the panels were lit) and at night (without the panels lit). Special attention was paid to the influence of the energy quality parameters regarding the additional consumptions of the plant in the two situations. It was also considered to find an optimal solution for the maximum safety of the equipment in order to avoid reaching the critical operating temperature of the transformers in the plant. In addition, a detailed economic study was also carried out to justify the choice of the adopted solution (compensation with passive circuit elements - reactance coils) over the classic ones (adjusting the ignition angle of the inverters in the plant so that they work in inductive mode ).","PeriodicalId":185216,"journal":{"name":"ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)","volume":"14 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":"123884801","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}

{"title":"EFFICIENCY MAPS FOR AN EV BLDC MOTOR USING ANALYTIC CALCULATION AND SIMULATION","authors":"L. Popescu, Alexandru Stănescu","doi":"10.36801/apme.2022.1.11","DOIUrl":"https://doi.org/10.36801/apme.2022.1.11","url":null,"abstract":"In an EV (Electric Vehicle), the more tractive force produced by the electric powertrain in fact requires more electric current from the battery. The question is how efficiently the stored energy is used, as for modern EVs, the ability to move over a greater distance represents an important issue. Of course, it can be best confirmed by physical measurements on the vehicle, but before, the analytic calculations and the simulations are important to certify the choices. In this context, the actual paper presents the analysis of the capabilities of a BLDC motor powertrain. A new method is used in the determination of the number of identical motors needed to participate in the powertrain, based on the efficiency map of the individual motor.","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":"116850540","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}

{"title":"CURRENT CONCERNS REGARDING THE CONSTRUCTION OF HIGH POWER DENSITY ELECTRICAL MACHINES FOR ELECTRICITY TRANSPORT SYSTEMS","authors":"A. Craciunescu","doi":"10.36801/apme.2021.1.16","DOIUrl":"https://doi.org/10.36801/apme.2021.1.16","url":null,"abstract":"\"Applications such as electrification of transmission systems require electric machines with high power density values. Such electric cars offer beneficial volumes and weights that are desired in transportation systems that include electric cars, electrified planes, and other types of electric vehicles. In October 2017, the US DRIVE groupThe U.S. Department of Energy (DOE), a large automobile and power company, has published a paper entitled “Roadmap for Research and Innovation in Electrical and Electronic Technologies for Efficiency vehicles and energy sustainability ”. This paper outlines the performance values ​​that electric traction motors must have in 2025 to accelerate the development of innovative and pre-competitive technologies to achieve a wide range of clean and efficient vehicles as well as related energy infrastructure. Thus, for electric traction motors with powers of 100 kW, used in the drive systems of single-electric vehicles, which is used in both engine and generator mode, for their power density is expected to increase from the value of 5.7 kW / L achieved in 2020 to the value of 50 kW / L to be achieved in 2025, which means a volume reduction of 89%. This reduction in volume must be accompanied by a reduction in the cost of these engines, from $ 4.7 / kW in 2020 to $ 3.3 / kW in 2025, ie a cost reduction of 30%. One of the factors that limits the power density of electric cars is the cooling system. In the absence of adequate cooling systems, the energy losses that occur in electric cars can cause damage to the insulation system, short circuits between the windings of the windings, demagnetization of the permanent magnets and, finally, damage to the drive system. As a result, the analysis of ways to reduce energy losses in electric cars and the identification of efficient cooling systems are essential concerns for the realization of electric cars with high values ​​of power density. In this paper, a presentation is made of the results of recently published research on finding constructive solutions for the realization of electric machines with very low energy losses as well as solutions for the realization of high-efficiency cooling systems, solutions that allows the performance of performance indicators for electric cars, on power density and cost, expected by the US Drive group for 2025.\"","PeriodicalId":185216,"journal":{"name":"ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)","volume":"363 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":"115898172","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}

{"title":"ELECTROMECHANICAL CONVERTER FOR ENERGY HARVESTING IN MEDICAL APPLICATIONS","authors":"Yelda Veli, A. Morega","doi":"10.36801/apme.2021.1.11","DOIUrl":"https://doi.org/10.36801/apme.2021.1.11","url":null,"abstract":"The paper analyzes an electromechanical converter used to collect the mechanical energy provided by the field of deformation of the walls of an arterial vessel as a result of the pulsating flow of blood through it. The structure of the converter is based on the flow of a strong electrically conductive fluid through channels in the magnetic field provided by the permanent magnets placed concentrically along the device and the arterial vessel, the electric field occurring at the electrodes. Numerical analysis neglects the electrical conductivity of the blood. The device has a wide range of applicability and can be adapted to meet industry requirements. ","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":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128283629","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}

{"title":"PROPAGATION OF OVERVOLTAGE WAVES IN ELECTRICAL TRANSFORMERS WITH GUARD RING","authors":"Alina VIIȘOREANU - RĂCHIȚEANU, A. Viişoreanu","doi":"10.36801/apme.2021.1.5","DOIUrl":"https://doi.org/10.36801/apme.2021.1.5","url":null,"abstract":"The paper presents a study based on numerical simulation methods of electrical circuits which analyzes the influence of the internal protection elements of the transformer on atmospheric surges. The difference between the time variation curves of the overvoltages propagated during the high voltage winding with and without guard ring is shown as an internal protection element of the transformer.","PeriodicalId":185216,"journal":{"name":"ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)","volume":"33 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":"121232262","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}