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Advisors: Usaola García, Julio tutor

Contributor: Chalmers University of Technology. Division of Electric Power Engineering

Department-Institute: Universidad Carlos III de Madrid. Departamento de Ingeniería Eléctrica

Degree: Ingeniería Industrial

Issued date: 2012

Defense date: 2012-07-19

Keywords: Transferencia de energía , Electromagnetismo , Electrónica de potencia

Rights: Atribución-NoComercial-SinDerivadas 3.0 España

Abstract: 

In this project, the power transfer and the coupling between two partially coupled coils using a ferrite core were studied. Some approaches of the magnetic parameters that define the coupling between the coils were done by analytical calculations and also by sIn this project, the power transfer and the coupling between two partially coupled coils using a ferrite core were studied. Some approaches of the magnetic parameters that define the coupling between the coils were done by analytical calculations and also by simulations with FEMM. Then, the system was assembled, and some real measurements were taken, so the calculations that were done previously were checked with the values obtained by the real measurements. To finish, some measurements more were done to check the influence of the design parameters, air gap, number of turns and frequency, in the system. The general conclusions of checking the analytical calculations with the values obtained by the real measurements are that it is possible to achieved tolerable approaches with simple calculations. Regarding the real measurements, it was found that when the frequency was varied and the other parameters were fixed, the maximum efficiency, 18 %, is achieved working at 50 kHz and with a load resistance around 40 Ω. When the number of turns was varied keeping the other parameters fixed, it was found that the greatest efficiency, 23%, is achieved with 20 turns and using a load resistance of approximately 20 Ω . +- 

En este proyecto se han estudiado la transferencia de energía y el acoplamiento entre dosbobinas acopladas usando un núcleo de ferrita. Se han hecho algunas aproximaciones de losparámetros magnéticos, inductancias, mediante cálculos analíticos del circuito mEn este proyecto se han estudiado la transferencia de energía y el acoplamiento entre dosbobinas acopladas usando un núcleo de ferrita. Se han hecho algunas aproximaciones de losparámetros magnéticos, inductancias, mediante cálculos analíticos del circuito magnético, asícomo simulaciones con FEMM. A continuación, se hizo el montaje del sistema en ellaboratorio, y se tomaron medidas reales con las que se calcularon los mismos parámetros,pudiendo de esta manera comprobar los valores calculados previamente. Para finalizar, sehicieron varias medidas, para comprobar la influencia en la transferencia de potencia delsistema de varios parámetros de diseño, frecuencia, número de vueltas de las bobinas -airgap-.La conclusión general de la comparación de los valores obtenidos en el laboratorio con losvalores calculados a través de simulaciones y cálculos analíticos es que es posible alcanzaraproximaciones bastante tolerables con cálculos muy simples. En cuanto a las medidasexperimentales, se llegó a que cuando se varía la frecuencia, dejando fijos el resto deparámetros, la eficiencia máxima, 18 %, es alcanzada trabajando a 50 kHz y con una resistenciade carga en torno a 40 Ω. Cuando se varía el número de vueltas de las bobinas, manteniendo elresto de parámetros fijados a un valor, se llegó a que la mejor eficiencia, que fue del 23%, fuealcanzada con bobinas de 20 vueltas y con una resistencia de carga de aproximadamente 20%.+- 







Autor: Montalvo Cano, Raquel

Fuente: http://e-archivo.uc3m.es


Introducción



Universidad Carlos III de Madrid Repositorio institucional e-Archivo http:--e-archivo.uc3m.es Trabajos académicos Proyectos Fin de Carrera 2012 Wireless power transfer Montalvo Cano, Raquel http:--hdl.handle.net-10016-16087 Descargado de e-Archivo, repositorio institucional de la Universidad Carlos III de Madrid Wireless Power Transfer RAQUEL MONTALVO CANO Departamento de electricidad.
Univ.
Carlos III de Madrid Leganés, Spain 2012 Department of Energy and Environment Division of Electric Power Engineering CHALMERS UNIVERSITY OF TECHNOLOGY Göteborg, Sweden 2012 i ii Wireless Power Transfer RAQUEL MONTALVO CANO Department of Energy and Environment Division of Electric Power Engineering CHALMERS UNIVERSITY OF TECHNOLOGY Göteborg, Sweden 2012 iii iv Wireless Power Transfer RAQUEL MONTALVO CANO © RAQUEL MONTALVO CANO 2012 Division of Electric Power Engineering Department of Energy and Environment Chalmers University of Technology SE-412 96 Göteborg Sweden Telephone: 46 (0)31-772 1000 Chalmers Bibliotek, Reproservice Göteborg, Sweden 2012 v Wireless power transfer. RAQUEL MONTALVOCANO Department of Energy and Environment Division of Electric Power Engineering Chalmers University of Technology Abstract In this project, the power transfer and the coupling between two partially coupled coils using a ferrite core were studied.
Some approaches of the magnetic parameters that define the coupling between the coils were done by analytical calculations and also by simulations with FEMM.
Then, the system was assembled, and some real measurements were taken, so the calculations that were done previously were checked with the values obtained by the real measurements.
To finish, some measurements more were done to check the influence of the design parameters, air gap, number of turns and frequency, in the system. The general conclusions of checking the analytical calculations with the values obtained by the real measurements are that it is possible to ...





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