US 11,970,068 B2
Base station for a power transmission system
Lukas Böhler, Wangs (CH); and Marc Bosch, Sennwald (CH)
Assigned to BRUSA Elektronik AG, Sennwald (CH)
Appl. No. 17/252,797
Filed by BRUSA Elektronik AG, Sennwald (CH)
PCT Filed Jun. 24, 2019, PCT No. PCT/EP2019/066651
§ 371(c)(1), (2) Date Dec. 16, 2020,
PCT Pub. No. WO2020/002219, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 10 2018 115 885.8 (DE), filed on Jun. 29, 2018.
Prior Publication US 2021/0261006 A1, Aug. 26, 2021
Int. Cl. H02J 13/00 (2006.01); B60L 53/12 (2019.01); H02J 50/10 (2016.01)
CPC B60L 53/12 (2019.02) [H02J 50/10 (2016.02)] 17 Claims
OG exemplary drawing
 
1. A base station for a power transmission system, the base station comprising:
a generator to generate a time-dependent power having a prescribable duty ratio and a prescribable frequency;
a primary circuit having a primary coil;
a primary measuring device to measure a real power and/or an apparent power in the primary circuit; and
a control device;
wherein the primary circuit is connected to the generator and to the primary measuring device;
wherein the control device is connected to the primary measuring device and to the generator;
wherein the control device is configured to keep the prescribable duty ratio constant while varying the prescribable frequency;
wherein the control device is configured to use the primary measuring device to measure the real power and/or the apparent power while varying the prescribable frequency from a starting frequency to an ending frequency in a range of descending frequencies;
wherein the control device is further configured to keep the prescribable frequency constant and vary the prescribable duty ratio when a prescribable real power limit value and/or apparent power limit value is/are exceeded; and
wherein the control device is further configured to exclude a prescribable combination of values for the prescribable frequency and the prescribable duty ratio when varying the prescribable frequency and/or when varying the prescribable duty ratio.