Abstract
In inductive power transfer applications, it is possible to ensure high efficiency of the main coils by operating at the optimum load. Since the optimum load depends on the coupling between the main coils, the operation needs to be adapted to match this case at different alignment conditions. This paper proposes a method to keep the optimum load constant by varying the natural resonant frequency of both the primary and secondary circuits of a S-S compensation network. This is possible by changing the value of the compensation capacitors at different alignments. This strategy differs from the ones found in the literature, where the input and the output voltage are changed to always match the optimum load. The proposed concept is proven through circuit simulations of an 11 kW EV battery charging system, and several strategies for the implementation of the variable capacitance are discussed.
Original language | English |
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Title of host publication | IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society |
Subtitle of host publication | Proceedings |
Place of Publication | Piscataway |
Publisher | IEEE |
Pages | 5262 - 5267 |
Number of pages | 6 |
ISBN (Electronic) | 978-1-7281-5414-5 |
ISBN (Print) | 978-1-7281-5415-2 |
DOIs | |
Publication status | Published - 2020 |
Event | The 46th Annual Conference of the IEEE Industrial Electronics Society : IECON 2020 - Singapore, Singapore Duration: 18 Oct 2020 → 21 Oct 2020 https://www.iecon2020.org/ |
Conference
Conference | The 46th Annual Conference of the IEEE Industrial Electronics Society |
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Country/Territory | Singapore |
City | Singapore |
Period | 18/10/20 → 21/10/20 |
Internet address |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-careOtherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Keywords
- Electric vehicles
- inductive power transfer
- optimum load matching
- variable capacitance
- wireless charging