Effect of the DC-Link Capacitor Size on the Wireless Inductive-Coupled Opportunity-Charging of a Drone Battery

Andrea Carloni, Federico Baronti, Roberto Di Rienzo, Roberto Roncella and Roberto Saletti
Additional contact information
Andrea Carloni: Dipartimento Ingegneria dell’Informazione, University of Pisa, Via Caruso 16, 56122 Pisa, Italy
Federico Baronti: Dipartimento Ingegneria dell’Informazione, University of Pisa, Via Caruso 16, 56122 Pisa, Italy
Roberto Di Rienzo: Dipartimento Ingegneria dell’Informazione, University of Pisa, Via Caruso 16, 56122 Pisa, Italy
Roberto Roncella: Dipartimento Ingegneria dell’Informazione, University of Pisa, Via Caruso 16, 56122 Pisa, Italy
Roberto Saletti: Dipartimento Ingegneria dell’Informazione, University of Pisa, Via Caruso 16, 56122 Pisa, Italy

Energies, 2020, vol. 13, issue 10, 1-13

Abstract: Wireless inductive-coupled power transfer and opportunity battery charging are very appealing techniques in drone applications. Weight and size are very critical constraints in drones, so the battery and the on-board electronics must be as light and small as possible. The on-board components involved in the resonant inductive-coupled wireless power transfer usually consist of the secondary coil, the compensation capacitor, the bridge rectifier, the LC -filter and the battery. This paper suggests a sizing of the LC -filter capacitor that improves the charging power of the battery. In addition, further on-board space and size is saved by using the stray inductance of the battery as filtering inductor. LTSpice simulations and experimental tests carried out on the prototype of a wireless power transfer circuit shows the dependency of the power delivered to the battery on the filter capacitor size. Finally, it is found that the power transfer to the battery is maximized by choosing the capacitor value that sets the LC -filter resonant frequency close to the double of the excitation frequency of the wireless charging. The drawback is a large current and voltage ripple in the battery.

Keywords: opportunity charging; wireless power transfer; series-series architecture; inductive-coupled resonant circuit; DC-link capacitor sizing; drone battery charging (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/13/10/2621/pdf (application/pdf)
https://www.mdpi.com/1996-1073/13/10/2621/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:13:y:2020:i:10:p:2621-:d:361080

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().