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:
Oct. 20, 2020
Filed:
Apr. 20, 2018
Delta Electronics (Thailand) Public Company Limited, Samuptrakarn, TH;
Shuailin Du, Samutprakarn, TH;
Yongkai Liao, Samutprakarn, TH;
Kai Dong, Samutprakarn, TH;
Jinfa Zhang, Samutprakarn, TH;
DELTA ELECTRONICS (THAILAND) PUBLIC COMPANY LIMITED, Samutprakarn, TH;
Abstract
A wireless power transmission device includes a transmitter unit and a receiver unit. The transmitter unit converts an input DC power into an inverted AC power, the receiver unit receives the AC power through a coupling effect. A fault protection method is also provided in the present disclosure. If the receiver unit is abnormal, a main power circuit of the receiver unit is short-circuited. Then, a phase relationship between an inverted AC voltage and an inverted AC current of the inverted AC power is detected. A phase judgment signal is generated according to the phase relationship. An overcurrent judgment signal is generated according to the amplitude of the inverted AC current and a predetermined current threshold. A fault signal is generated according to the phase judgment signal and the overcurrent judgment signal. In response to the fault signal, the wireless power transmission device is controlled to shut down.