Open AccessCharging equaliser based on wireless power transfer for electric scooters
Author(s) -
Liu Lizhou,
Lu Yuanfang,
Xu Bing,
Xiong Liang,
Chen Yang,
Zhou Wei,
Mai Ruikun,
He Zhengyou
Publication year - 2020
Publication title -
iet renewable power generation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.005
H-Index - 76
eISSN - 1752-1424
pISSN - 1752-1416
DOI - 10.1049/iet-rpg.2020.0391
Subject(s) - equaliser , wireless power transfer , wireless , maximum power transfer theorem , computer science , electrical engineering , power (physics) , telecommunications , engineering , physics , quantum mechanics , decoding methods
It is more convenient and safer to employ wireless power transfer (WPT) systems to charge the battery pack of electric scooters (ESs) than conventional plug‐in systems. A charging equaliser suitable for ESs is proposed to achieve constant current (CC) output without communication link between the transmitter side and the receiver side. The full‐bridge rectifier and select switches utilised at the receiver side are employed to be operated once to change from the balancing mode to charging modes. The characteristics of the load‐independent current output in the CC mode are achieved by properly selecting the parameters of the circuit so that no sophisticated control strategies are required to regulate the output as per the charging profile. The experimental results show that when the voltage of battery pack is charged at 32 or 4.2 V, the current is 1.02 or 1.12 A, respectively. Therefore, the proposed system can be considered as a CC system.
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