Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 36, Issue 3, Pages 2685-2695Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2020.3014687
Keywords
Topology; Couplings; Impedance; Equivalent circuits; Coils; Network topology; Design methodology; Inductive power transfer (IPT); input impedance angle; misalignment tolerance; output voltage fluctuation range; S; SP compensation topology
Categories
Funding
- National Natural Science Foundation of China [51922033]
- Power Electronics Science and Education Development Program of Delta Group
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The article discusses the importance of misalignment tolerance in inductive power transfer systems and proposes conditions for high tolerance compensation topologies. It is proven that proper parameter design can improve misalignment tolerance. The characteristics of impedance and two 300 W prototypes with strong misalignment tolerance are analyzed and verified.
The capability of misalignment tolerance is vital for an inductive power transfer system. The conditions satisfied by the high-misalignment-tolerant compensation topology are proposed in the article. It is proven that all compensation topologies with secondary parallel compensation component have a strong capability of misalignment tolerance if the parameters of the compensation circuit are properly designed. And, their misalignment-tolerant capability was analyzed. The impedance characteristics of the simple S/T compensation topology are analyzed. Two prototypes of approximately 300 W used S/SP (primary series, secondary series-parallel) compensation topology with strong misalignment tolerance were designed to verify the system performance. They have the characteristics of constant-voltage and constant-current output, respectively.
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