Publications

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2016
Energy harvesting: an interesting topic for education programs in engineering specialities, Vassilenko, Valentina, Valtchev Stan, Pamies-Teixeira {Jorge Joaquim}, and Pavlov Serhii , Proceedings of the tenth international scientific-practical conference «Internet-Education-Science» (IES-2016), p.149–156, (2016) Abstract

Nowadays some possible alternative methods to replace the batteries as power source, or to achieve better maintenance of existing (or smaller) batteries, are the so called Energy Harvesting (EH) methods, i.e. to obtain energy from the environment or recover and store energy generated by the human body in its usual activities. However, this requires specific technology and materials and usually a multidisciplinary team. For this reason, inclusion a topic on energy harvesting in educational programs of several engineering specialties at technical universities is of great importance.In this paper we present some results from interdisciplinary collaboration at Faculty of Science and Technology at Nova University of Lisbon on the energy harvesting. Experiments were performed in order to calculate the power that could be generated from the chest movements during breathing and from the feet during walking, etc. For the experiments, mostly piezoelectric effect was explored.

Experimental study of wireless inductive system for electric vehicles batteries charging, Gigov, G., Krusteva A., and Valtchev S. , Proceedings - 2016 IEEE International Power Electronics and Motion Control Conference, PEMC 2016, p.286-290, (2016) Abstract
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Improving magnetic coupling for battery charging through 3D magnetic flux, Jorge, L. F. R., Valtchev SS, and Melicio R. , Proceedings - 2016 IEEE International Power Electronics and Motion Control Conference, PEMC 2016, p.291-297, (2016) Abstract
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The mathematical modeling of alternating current electric drive with DC-DC converter and ultracapacitors, Braslavsky, I., Plotnikov I., and Valtchev S. , Proceedings - 2016 IEEE International Power Electronics and Motion Control Conference, PEMC 2016, p.511-515, (2016) Abstract
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Modeling and supervisory control of a virtual X8-VB quadcopter, Brito, V., Palma L. B., Coito F. V., and Valtchev S. , Proceedings - 2016 IEEE International Power Electronics and Motion Control Conference, PEMC 2016, p.686-693, (2016) Abstract
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Some aspects of the reliability increasing of the transport electric drives, Braslavsky, I. Y., Metelkov V. P., Valtchev S., Esaulkova D. V., Kostylev A. V., and Kirillov A. V. , Proceedings - 2016 IEEE International Power Electronics and Motion Control Conference, PEMC 2016, p.706-710, (2016) Abstract
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Study of the electromagnetic interference generated by wireless power transfer systems, Baikova, E. N., Valtchev SS, Melicio R., Krusteva A., and Fernão Pires V. , International Review of Electrical Engineering, Volume 11, Number 5, p.526-534, (2016) Abstract
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Study on electromagnetic emissions from wireless energy transfer, Baikova, E. N., Valtchev SS, Melicio R., Pires V. F., Krusteva A., and Gigov G. , Proceedings - 2016 IEEE International Power Electronics and Motion Control Conference, PEMC 2016, p.492-497, (2016) Abstract
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Three-phase magnetic field system for wireless energy transfer, Romba, L. F., Valtchev SS, and Melicio R. , 2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2016, p.73-78, (2016) Abstract
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Wireless Energy Transfer with Three-Phase Magnetic Field System: Experimental Results, Romba, Luis, Valtchev Stan, and Melício Rui , (2016) Abstract
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Wireless Energy Transfer with Three-Phase Magnetic Field System: Experimental Results, Romba, Luis, Valtchev Stan, and Melício Rui , (2016) Abstract
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Wireless power transfer impact on data channel, Baikova, E. N., Valtchev SS, Melicio R., and Pires V. F. , 2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2016, p.582-587, (2016) Abstract
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2015
Smart microgrid sensorless load monitoring and management in {TN}-S and {TN}-C-S electrical networks, Mihaylov, Kaloyan, Valtchev Stanimir, and Arnaudov Rumen , 2015 International Conference on Electrical Drives and Power Electronics ({EDPE}), sep, (2015) Abstract
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Sensorless load monitoring and management in electric power grid through energy harvesting, Mihaylov, Kaloyan, Valtchev Stanimir, and Arnaudov Rumen , 2015 International Conference on Renewable Energy Research and Applications ({ICRERA}), nov, (2015) Abstract
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Pespectives of {TFET} devices in ultra-low power charge pumps for thermo-electric energy sources, Cavalheiro, David, Moll Francesc, and Valtchev Stanimir , 2015 {IEEE} International Symposium on Circuits and Systems ({ISCAS}), may, (2015) Abstract
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Tunnel {FET} device characteristics for {RF} energy harvesting passive rectifiers, Cavalheiro, David, Moll Francesc, and Valtchev Stanimir , 2015 {IEEE} 13th International New Circuits and Systems Conference ({NEWCAS}), jun, (2015) Abstract
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Novel {UHF} Passive Rectifier with Tunnel {FET} Devices, Cavalheiro, David, Moll Francesc, and Valtchev Stanimir , 2015 {IEEE} Computer Society Annual Symposium on {VLSI}, jul, (2015) Abstract
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400V DC Supply Discussed Once Again, and Unavoidable (more efficient, more reliable, safer), Valtchev, Stanimir , Symposium INTELEC95, Presentation and publication of article, available to authorized industry and academy participants, Zaltbommel, (2015) Abstract
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400V DC Supply Discussed Once Again, and Unavoidable (more efficient, more reliable, safer), , Symposium INTELEC95, Presentation and publication of article, available to authorized industry and academy participants, Zaltbommel, (2015) Abstract
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Investigation of the Tesla Transformer as a Device for One-Wire Power and Signaling and as a Device for Power and Signaling through the Ground, Valtchev, Stanimir , Advanced Doctoral Conference DOCEIS, Caparica, (2015) Abstract
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Investigation of the Tesla Transformer as a Device for One-Wire Power and Signaling and as a Device for Power and Signaling Through the Ground, Mihaylov, Kaloyan, Neves-Medeiros Rui, Arnaudov Rumen, and Valtchev Stanimir , {IFIP} Advances in Information and Communication Technology, p.459–466, (2015) Abstract
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Investigation of the Tesla Transformer as a Device for One-Wire Power and Signaling and as a Device for Power and Signaling through the Ground, , Advanced Doctoral Conference DOCEIS, Caparica, (2015) Abstract
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Novel Charge Pump Converter with Tunnel FET Devices for Ultra-Low Power Energy Harvesting Sources, Valtchev, Stanimir , MWSCAS, Fort Collins, Colorado, (2015) Abstract
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Resonant Power Converters in Contactless Energy Transfer: Electric Vehicle and Renewable Energy Processing, Invited Speech, Valtchev, Stanimir , XVIth International Scientific Technical Conference Alternating Current Electric Drives (ACED), pp. 195-200, (2015) Abstract
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Resonant Power Converters in Contactless Energy Transfer: Electric Vehicle and Renewable Energy Processing, Invited Speech, , XVIth International Scientific Technical Conference Alternating Current Electric Drives (ACED), pp. 195-200, (2015) Abstract
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