公开(公告)号：US10418857B2

公开(公告)日：2019-09-17

申请号：US15790815

申请日：2017-10-23

Applicant: WITS Co., Ltd.

Inventor： Hyo Young Kim ,  Seung Won Park ,  Eun Young Shin ,  Byoung Woo Ryu ,  Dong Woo Han ,  Ye Ji Park ,  Young Seung Roh

IPC: H02J50/12 ,  H02M7/539 ,  H02M1/14 ,  H02M1/36 ,  H02M3/155 ,  H02M7/48 ,  H02J50/80 ,  H02J7/02 ,  H02M1/00

Abstract: A wireless power transmitter includes: a converter including switching elements forming a bridge circuit and configured to output an alternating current (AC) voltage in response to control signals; a resonator including a resonant capacitor and a resonant coil, and configured to receive the AC voltage to transmit power wirelessly; and a controller configured to set a dead time at which a magnitude of the AC voltage is substantially zero in response to a signal received from a wireless power receiver.