J. Faiz, Z. Valipour, M. Shokri-Kojouri, M. A. Khan
{"title":"Design of a radial flux permanent magnet wind generator with low coercive force magnets","authors":"J. Faiz, Z. Valipour, M. Shokri-Kojouri, M. A. Khan","doi":"10.1109/IEPS.2016.7521864","DOIUrl":"https://doi.org/10.1109/IEPS.2016.7521864","url":null,"abstract":"In this paper, the design procedure of a three-phase radial flux permanent magnet synchronous generator (PMSG) is presented for a wind turbine application. This generator is intended for direct coupling to a wind turbine. Low coercive force AlNiCo permanent magnet (PM) material is used in place of common and costly NdFeB PMs. The low coercive force of AlNiCo PMs may result in demagnetization of the PMs when conventional structures of a PM machine is used. This occurs due to the demagnetization magneto-motive force due to stator currents under load conditions of the machine. This may result in irreversible change in the PMs and also unstable operation of the machine, which is the main problem in using AlNiCo PMs in PMSG design. This can be resolved through alternate rotor design that aims to achieve flux intensifying operation. Moreover, the optimal number of slot/pole/phase is determined for cogging torque reduction and generator performance improvement. In this paper, a design detailed approach is formulated and presented, achieves the afore-mentioned characteristics. Finally, the precision of the analytical design approach of the PMSG is validated by means of detailed finite element computations.","PeriodicalId":428319,"journal":{"name":"2016 2nd International Conference on Intelligent Energy and Power Systems (IEPS)","volume":"2013 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128190833","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":"Simulation and study of modes for full-scale mode simulator for Ukrainian energy systems","authors":"V. Gurieiev, O. Sanginova","doi":"10.1109/IEPS.2016.7521848","DOIUrl":"https://doi.org/10.1109/IEPS.2016.7521848","url":null,"abstract":"Some aspects of simulation of the energy systems for full-scale mode simulator, staff training and teaching in order to develop its skills of complex accidents rapid elimination at the Ukrainian power supply systems are considered.","PeriodicalId":428319,"journal":{"name":"2016 2nd International Conference on Intelligent Energy and Power Systems (IEPS)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125126422","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":"Dynamic output feedback linearizing control of saturated induction motors with torque per Ampere ratio maximization","authors":"S. Peresada, S. Kovbasa, S. Dymko, S. Bozhko","doi":"10.1109/IEPS.2016.7521878","DOIUrl":"https://doi.org/10.1109/IEPS.2016.7521878","url":null,"abstract":"The paper presents a novel maximum torque per Ampere (MTA) controller for induction motor (IM) drives. The proposed controller exploits the concept of direct (observer based) field orientation and guarantees asymptotic torque tracking of smooth reference trajectories and maximizes the torque per Ampere ratio when the developed torque is constant or slowly varying. A dynamic output-feedback linearizing technique is employed for the torque subsystem design. In order to improve torque tracking accuracy a motor magnetizing curve is taken into account during MTA optimization and controller design. The achieved steady-state system efficiency have been compared experimentally for three types of controllers, namely: standard vector control with constant flux operation, controller based on classic maximization of torque per Ampere ratio for linear magnetic circuit and controller based on MTA strategy for saturated induction motor. It is shown experimentally that the controller designed for saturated induction motor provides not only higher torque per Ampere ratio but also increases power factor and reduces active power consumption hence improving the drive efficiency. Operation with slowly varying torque references has also been analysed. It is shown that the proposed controller is suitable for applications that do not demand an extremely fast dynamic response, for example for electric vehicle drives.","PeriodicalId":428319,"journal":{"name":"2016 2nd International Conference on Intelligent Energy and Power Systems (IEPS)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132883940","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":"The linearized dynamic model of the series resonant converter for small signals","authors":"G. Pavlov, A. Obrubov, I. Vinnichenko","doi":"10.1109/IEPS.2016.7521879","DOIUrl":"https://doi.org/10.1109/IEPS.2016.7521879","url":null,"abstract":"Processes in the power scheme double-bridge series resonant converter are considered. The equivalent circuit of the converter based on the imposition of linear active resonant contours with sources of rectangular form voltage is applied to the analysis of processes. The expressions for the discrete the control-to-output-envelope transfer functions of the active resonant contour and of the resonant converter are received. The block scheme of the converter dynamic model based on typical transfer links is offered. Recommendations for the use of the obtained expressions are offered.","PeriodicalId":428319,"journal":{"name":"2016 2nd International Conference on Intelligent Energy and Power Systems (IEPS)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122525199","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":"Modelling infraslow circuits in real-time systems smart-grid on the basis of separation of motions in frequency and sensing","authors":"Nikiforov Andrey Petrovich","doi":"10.1109/IEPS.2016.7521853","DOIUrl":"https://doi.org/10.1109/IEPS.2016.7521853","url":null,"abstract":"Modelling is an integral part of end-to-end computer-aided design. However, modelling real-time systems remains fragile and long-term. A method is proposed for the sustainable co-simulation of control objects and devices for relay protection and automation at rapid time of a single calculation. The relevance of objectives is the continual improvement of the hardware components, technological equipment and software requirements for the construction of electric power networks. Decisions are based on the representation of objects of information flows. We show how to improve the algorithms of the devices on the basis of mutual correspondence of two generalised block diagrams of the control object and control devices. We highlight the widget for a graphical display terminal, desktop and mobile devices for solving `bottleneck' problems of information, and outsourcing of auxiliary services networks. An example presents the improvement algorithms of active and passive `not under stress' self-monitoring. The self-control system will provide automatic maintenance of the efficiency of the network with the Petersen's coil over long-time intervals of operation for multiple collaborating network sites for smart-grids.","PeriodicalId":428319,"journal":{"name":"2016 2nd International Conference on Intelligent Energy and Power Systems (IEPS)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129127082","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":"A three-phase full soft-switching current-fed naturally clamped DC-DC converter for high-power fuel cell applications","authors":"R. Kosenko, A. Chub, A. Blinov","doi":"10.1109/ieps.2016.7521882","DOIUrl":"https://doi.org/10.1109/ieps.2016.7521882","url":null,"abstract":"This paper presents a novel three-phase full soft-switching current-fed naturally clamped DC-DC converter intended for high-power fuel cell applications. First, operation principle is described theoretically for one third of the switching period using equivalent circuits. Then, simulation study of semiconductor conduction power losses of the three-phase converter and a single-phase counterpart was presented. The three-phase converter proposed features lower switch RMS current than single-phase counterpart. Hence, it can be recommended for high power fuel cell applications.","PeriodicalId":428319,"journal":{"name":"2016 2nd International Conference on Intelligent Energy and Power Systems (IEPS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117115784","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}