Power processing circuit with simultaneous frequency tuning and voltage regulation: concept analysis, design, and integration into IPT receivers
Inductive power transfer (IPT), a magnetic-coupling-based type of wireless power transfer, faces challenges owing to resonance frequency deviations arising from component tolerances and temperature effects at either the transmitter or receiver. This work introduces a receiver-side power processing a...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/452515 |
| Acceso en línea: | https://hdl.handle.net/2117/452515 https://dx.doi.org/10.1109/ACCESS.2025.3641800 |
| Access Level: | acceso abierto |
| Palabra clave: | Four-switch buck-boost converter Frequency tuning Inductive power transfer Series-parallel compensation network Wireless charging Wireless power transfer Àrees temàtiques de la UPC::Enginyeria electrònica::Microelectrònica |
| Sumario: | Inductive power transfer (IPT), a magnetic-coupling-based type of wireless power transfer, faces challenges owing to resonance frequency deviations arising from component tolerances and temperature effects at either the transmitter or receiver. This work introduces a receiver-side power processing architecture that addresses detuning challenges while simultaneously maintaining a precise output voltage. The proposed solution unifies frequency tuning and voltage regulation within a single DC-DC converter, transforming a conventional back-end buck or boost stage into a four-switch buck-boost topology by adding only two additional switches. A tailored modulation strategy enables step-up and step-down voltage regulation while dynamically compensating for IPT receiver frequency shifts, all without extra passive elements, capacitors, or inductors, typically used for frequency tuning. The concept is substantiated through comprehensive mathematical modeling, integration with a series–parallel compensation network, and experimental validation on a 15 W prototype. The results demonstrate output voltage regulation and effective frequency correction that guarantees up to 8% efficiency recovery under most adverse detuning circumstances. |
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