Title:
WIRELESS POWER TRANSMITTER CAPABLE OF AUTOMATIC ADJUSTMENT ACCORDING TO IMPEDANCE CHANGE
Document Type and Number:
WIPO Patent Application WO/2017/217716
Kind Code:
A1
Abstract:
The present invention relates to a wireless power transmission technique which can operate stably by means of an automatic adjustment according to an impedance change of a load without measuring the phase information of a resonator, by detecting the hard switching of a switch in an amplifier and automatically adjusting the value of a resonant capacitor according to the detected hard switching operation state. A wireless power transmitter automatic tuning apparatus comprises: a hard switching detection unit for detecting the hard switching operation state of a switch in an amplifier constituting a wireless power transmitter; and a control unit for automatically adjusting the value of a resonant capacitor according to the detected hard switching operation state.
Inventors:
HWANG JONG TAE (KR)
JEON IK SOO (KR)
LEE DONG SU (KR)
SHIN HYUN ICK (KR)
RHEE JOON (KR)
JEON IK SOO (KR)
LEE DONG SU (KR)
SHIN HYUN ICK (KR)
RHEE JOON (KR)
Application Number:
PCT/KR2017/006073
Publication Date:
December 21, 2017
Filing Date:
June 12, 2017
Export Citation:
Assignee:
MAPS INC (KR)
International Classes:
H02J50/12; H02J7/02
Foreign References:
| KR20160017560A | 2016-02-16 | |||
| KR20130087976A | 2013-08-07 | |||
| KR20140053302A | 2014-05-07 | |||
| KR20140053282A | 2014-05-07 | |||
| JP2014519798A | 2014-08-14 |
Attorney, Agent or Firm:
SINJI PATENT FIRM (KR)
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