A Converter with Automatic Stage Transition Control for Inductive Power Transfer

Lin Chen, Jianfeng Hong, Zaifa Lin, Daqing Luo, Mingjie Guan and Wenxiang Chen
Additional contact information
Lin Chen: Department of Instrumental and Electrical Engineering, Xiamen University, Xiamen 361005, China
Jianfeng Hong: Department of Instrumental and Electrical Engineering, Xiamen University, Xiamen 361005, China
Zaifa Lin: Department of Instrumental and Electrical Engineering, Xiamen University, Xiamen 361005, China
Daqing Luo: Department of Instrumental and Electrical Engineering, Xiamen University, Xiamen 361005, China
Mingjie Guan: Department of Instrumental and Electrical Engineering, Xiamen University, Xiamen 361005, China
Wenxiang Chen: Department of Instrumental and Electrical Engineering, Xiamen University, Xiamen 361005, China

Energies, 2020, vol. 13, issue 20, 1-14

Abstract: An automatic stage transition converter for an inductive power transfer system is presented in this paper. An effective control strategy with two working stages of independent energy injection stage and free resonance stage is employed in the proposed converter. With the automatic stage transition strategy, when the frequency of the resonance network changes, the ending time of the free resonance stage is automatically determined. At the same time, the phase angle of the free resonance stage is automatically set as half a resonant cycle. As the stage transition is not triggered by the switches, the switch motion can be executed in advance of the transition moments. Time margins are offered for every switch in the converter, which make the switching moments of the switches flexible and the control simple. Another feature of this converter is that during the energy injection stage, the energy is injected into the inductor independently. Therefore, the input power can be easily regulated by adjusting the energy injection time. A prototype for the converter and the inductive power transfer system was implemented experimentally. From the experimental results, the automatic stage transition and power regulation capability of the proposed converter are verified. The switches all operated at the soft switch condition. When the energy injection time was adjusted from 10 μs to 25 μs, the output power changed from 143 W to 740 W.

Keywords: inductive power transfer; energy injection; soft switching condition; automatic stage transition; efficiency (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/1996-1073/13/20/5268/pdf (application/pdf)
https://www.mdpi.com/1996-1073/13/20/5268/ (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:20:p:5268-:d:426102

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 ().