公开(公告)号：US12021473B2

公开(公告)日：2024-06-25

申请号：US17365446

申请日：2021-07-01

申请人： ebm-papst St. Georgen GmbH & Co. KG

发明人： Andreas Pfaff ,  Paul Layes ,  Tobias Maier ,  Sebastian Flihs

IPC分类号： H02P21/36 ,  H02M3/04 ,  H02P3/06 ,  H02P3/18

CPC分类号： H02P3/06 ,  H02M3/04

摘要： A control for an electromagnetic holding brake with a coil for releasing the holding brake and maintaining it in the released position, which requires a minimum brake coil voltage to maintain it in the re-leased position, having a DC-DC converter with an input and an output, the DC-DC converter being designed to convert a variable input voltage pre-sent at the input into a predetermined switch-on voltage provided at the output and a predetermined holding voltage provided at the output, the holding voltage corresponding to the minimum brake coil voltage, the DC-DC converter being designed to implement a 2-stage voltage control and, in a first stage, to maintain the switch-on voltage as a regulated DC voltage for a predetermined time, to downregulate the voltage from the switch-on voltage following a predetermined voltage curve to the holding voltage as regulated DC voltage, and to maintain it in a second stage.