A fixed‐frequency control method for wireless power transmission battery chargers using a dual‐function compensator

Autor: Sina Bajelvand, Amir Babaki, Alireza Jafari‐Natanzi, Ali Yazdian Varjani, Sadegh Vaez‐Zadeh
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: IET Power Electronics, Vol 17, Iss 8, Pp 930-940 (2024)
Druh dokumentu: article
ISSN: 1755-4543
1755-4535
DOI: 10.1049/pel2.12703
Popis: Abstract High efficiency and unity power factor (PF) are the most important requirements of a wireless charger system simultaneous with the output voltage regulation. Achieving all above‐mentioned criteria in a wide range of the load is challenging in the system. This paper presents a novel control approach applied to series‐series wireless power transmission converter by using a dual‐function compensator to achieve unity PF and maximum efficiency during the constant power‐constant voltage (CP‐CV) charging scenarios. A semi‐active rectifier with impedance matching capability along with a switch‐controlled capacitor constitutes the dual‐function compensator on the secondary side. Meanwhile, the primary side inverter executes the CP‐CV charging scenario for the battery with various charging characteristics at a fixed‐switching frequency. Besides that, all secondary side switches experience soft switching condition throughout the battery charging. Finally, a prototype with a power of 200 W and roughly regulated efficiency of 90% is presented in order to verify the proposed control method.
Databáze: Directory of Open Access Journals
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