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Bücher Englische Bücher Wissen & Bildung Naturwissenschaft, Medizin, Informatik, Technik Technik Elektronik, Elektro- und Nachrichtentechnik Localization and Free Positioning with a Cooperative Multiple Coil Transmitter for Wireless Power Transfer
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Localization and Free Positioning with a Cooperative Multiple Coil Transmitter for Wireless Power Transfer
Wei Chen (Gebundene Ausgabe, Englisch)
★★★★★
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Optischer Zustand
Beschreibung
With the continuous development of communication technology there are more and more portable devices requiring periodic charging with a cable and power socket. Wireless power transfer (WPT) technology provides a promising solution to overcome the inconvenience, potential safety hazard and unsightliness of power supply cables. The result of this thesis is a conceptual design for an optimized
100… kHz WPT system having a large charging pad allowing free placement of the device to be charged. The system has high efficiency and is Electromagnetic Compatibility friendly.
The three-coil system, composed of a single transmitter coil and two coils in the receiver, is operating in series resonance and has been optimized by synthesis of the coupling coefficient and quality factor to provide maximum efficiency and power simultaneously. Unique to the proposed design is that the single transmitter coil is replaced with 4-coil structure which enables field forming to strengthen the field in the center of the 4-coil structure and reduce it at the margins. A transmitter matrix consisting of cooperative multiple coils is proposed to increase the charging pad area and reduce the external magnetic field. A 16 coils system is selected as most cost efficiency. The transmitter coil radius is optimized using the criterion of weighted overall efficiency, which results in high efficiency with minimal emission to the surroundings. During charging, the appropriate 4-coil structure is activated, depending on the device location, with the other coils turned off. Several algorithms are presented that enable localization of the receiver position including: grid search, Gauss-Newton and reflected impedance for combined coils. COMSOL simulation is used to investigate the effects of using ferrite, aluminum loading and a reactive resonant coil to improve system efficiency and reduce external fields below specified human exposure limits.
This thesis provides a WPT solution for charging mobile and portable devices that has many advantages. The proposed 100 kHz 16 coils transmitter matrix WPT system, consisting of individually activated 4-coil sub structures, allows free placement within the charging area, more than 65% transfer efficiency at 10 cm transmission distance and electromagnetic field emission considerably less than required by guidelines. Dieses Produkt haben wir gerade leider nicht auf Lager.
Handgeprüfte Gebrauchtware
Bis zu 50 % günstiger als neu
Der Umwelt zuliebe
Technische Daten
Erscheinungsdatum
15.03.2018
Sprache
Englisch
EAN
9783843935180
Herausgeber
Dr. Hut
Serien- oder Bandtitel
Kommunikationstechnik
Sonderedition
Nein
Autor
Wei Chen
Seitenanzahl
243
Einbandart
Gebundene Ausgabe
Schlagwörter
Wireless Power Transfer, Multiple Coil Transmitter, Localization
Thema-Inhalt
T - Technologie, Ingenieurswissenschaft, Landwirtschaft, Industrieprozesse
TJ - Elektronik, Nachrichtentechnik
Höhe
210 mm
Breite
14.8 cm
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