公开(公告)号：US20230402872A1

公开(公告)日：2023-12-14

申请号：US18035041

申请日：2021-11-01

申请人： UNIVERSITY OF SOUTH-EASTERN NORWAY

发明人： Mehdi AZADMEHR ,  Yelzhas ZHAKSYLYK

IPC分类号： H02J50/00 ,  H02J50/40 ,  H02J50/10

CPC分类号： H02J50/005 ,  H02J50/402 ,  H02J50/10

摘要： The invention relates to a switchable multiturn coil antenna for transmitting or receiving wireless power in a wireless power transfer system and a corresponding wireless power transfer system. The coil structure includes a planar multiturn primary conductor coil (5) and at least two secondary conductor coils (1, 2, 3, 4) positioned in the plane defined by the primary coil between the turns of the multiturn primary coil, each of the secondary coils having different sizes and lengths providing different inductance and are shorter than the primary coil, wherein each secondary coils is connected to a respective switch (9,10,11, 12) controlled by a tuning controller (23) for individually connecting and disconnecting the coil to a load or to a power supply. An impedance (8) is be connected between the ends of the primary coil and each of the secondary coils extends one turn around a common coil center.