US 12,143,045 B2
Technique for disconnecting the actuation of a power stage
Alexander Guenter, Barntrup (DE); Dirk Plewka, Nieheim (DE); and Lutz Heuer, Blomberg (DE)
Assigned to PHOENIX CONTACT GMBH & CO. KG, Blomberg (DE)
Appl. No. 18/014,761
Filed by Phoenix Contact GmbH & Co. KG, Blomberg (DE)
PCT Filed Jul. 7, 2021, PCT No. PCT/EP2021/068825
§ 371(c)(1), (2) Date Jan. 6, 2023,
PCT Pub. No. WO2022/008590, PCT Pub. Date Jan. 13, 2022.
Claims priority of application No. 2020/5507 (BE), filed on Jul. 8, 2020.
Prior Publication US 2023/0299706 A1, Sep. 21, 2023
Int. Cl. H02P 29/024 (2016.01); H02P 27/06 (2006.01)
CPC H02P 29/024 (2013.01) [H02P 27/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device for disconnecting an actuation of a power stage of an electric machine, comprising:
a first input configured to detect a safety function signal and a second input configured to detect a reference potential of the safety function signal; and
at least one switch-off path of the actuation, each of the at least one switch-off path comprising:
an input coupler connected between the first input and the second input on an input side and configured to transmit the safety function signal from the first and second inputs; and
at least one output configured to actuate a switch of a half bridge of the power stage, and
at least one modulation logic unit configured to logically link a modulation signal associated with a respective switch and the safety function signal transmitted by a respective input coupler and to output it at the output as a disconnectable modulation signal,
wherein the input coupler is configured to transmit the safety function signal galvanically isolated from the first and second inputs, and/or
wherein the modulation signal associated with the respective switch is galvanically isolated from a modulator configured to generate the modulation signal in the device.