The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 22, 2021
Filed:
Dec. 28, 2019
Xi'an Jiaotong University, Shaanxi, CN;
Laili Wang, Shaanxi, CN;
Yongbin Jiang, Shaanxi, CN;
Ruibang Li, Shaanxi, CN;
Yonghui Liu, Shaanxi, CN;
Min Wu, Shaanxi, CN;
Jing Sun, Shaanxi, CN;
Zexian Zeng, Shaanxi, CN;
Yue Wang, Shaanxi, CN;
Xu Yang, Shaanxi, CN;
Xi'an Jiaotong University, Xi'an, CN;
Abstract
The present invention discloses a current phase locking and driver pulse generation method for wireless charging for electric vehicles. By monitoring the resonant current iof the receiving coil, the proposed method generates the synchronization signal accurately based on the phase of the current i. Moreover, it controls the phases of driver pulses of switching transistors according to the synchronization signal so as to control the turn-on moment and turn-off moment of the switching transistors in the secondary rectifier. As a result, by using the proposed method, the pulse losing of the switching transistors in the secondary active rectifier can be avoided; the stable and reliable phase locking of the high-frequency resonant current and generation of driver pulses can be achieved; the anti-interference capability can be greatly enhanced, and the stability and reliability of the wireless charging system for electric vehicles can also be improved.