公开(公告)号：US09843199B2

公开(公告)日：2017-12-12

申请号：US14672803

申请日：2015-03-30

Applicant: ABB TECHNOLOGY AG

Inventor： Roman Bosshard ,  Johann Walter Kolar ,  Francisco Canales ,  Beat Guggisberg ,  Guanghai Gong ,  Bernhard Wunsch

IPC: B60L5/00 ,  B60L11/18 ,  H02J5/00 ,  H02J7/02 ,  H02J50/12 ,  H02J50/80 ,  H02M1/00 ,  H02M3/337

CPC classification number: H02J5/005 ,  B60L5/005 ,  B60L11/1812 ,  B60L11/182 ,  B60L2210/10 ,  B60L2210/30 ,  B60L2210/40 ,  H02J7/025 ,  H02J50/12 ,  H02J50/80 ,  H02J50/90 ,  H02M3/3376 ,  H02M2001/0054 ,  H02M2001/0058 ,  H02M2001/007 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T10/7216 ,  Y02T10/7241 ,  Y02T90/122 ,  Y02T90/127 ,  Y02T90/14

Abstract: An exemplary inductive power transfer system having a transmitter coil and a receiver coil. A transmitter-side power converter having a mains rectifier stage powering a transmitter-side dc-bus and controlling a transmitter-side dc-bus voltage U1,dc. A transmitter-side inverter stage with a switching frequency fsw supplies the transmitter coil with an alternating current. A receiver-side power converter having a receiver-side rectifier stage that rectifies a voltage induced in the receiver coil and powering a receiver-side dc-bus and a receiver-side charging converter controlling a receiver-side dc-bus voltage U2,dc. Power controllers that determine from a power transfer efficiency of the power transfer, reference values U1,dc*, U2,dc* for the transmitter and receiver side dc-bus voltages. An inverter stage switching controller controls the switching frequency fsw to reduce losses in the transmitter-side inverter stage.