Invention Grant
- Patent Title: Drive system and method for operating a drive system
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Application No.: US17424655Application Date: 2020-01-13
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Publication No.: US11722076B2Publication Date: 2023-08-08
- Inventor: Timo Hufnagel , Hans Jürgen Kollar , Christopher Reichert
- Applicant: SEW-EURODRIVE GMBH & CO. KG
- Applicant Address: DE Bruchsal
- Assignee: SEW-EURODRIVE GMBH & CO. KG
- Current Assignee: SEW-EURODRIVE GMBH & CO. KG
- Current Assignee Address: DE Bruchsal
- Agency: Carter, Deluca & Farrell LLP
- Priority: DE 2019000330.6 2019.01.21
- International Application: PCT/EP2020/025010 2020.01.13
- International Announcement: WO2020/151914A 2020.07.30
- Date entered country: 2021-07-21
- Main IPC: H02P3/18
- IPC: H02P3/18 ; H02P3/04 ; H02M7/217

Abstract:
In a drive system and method for operating a drive system, in which the drive systems includes an electromagnetically operable brake, an electric motor, e.g., a three-phase motor, and an electronic circuit, the brake has an energizable coil, e.g., a brake coil, the electronic circuit has a rectifier, an upper controllable semiconductor switch, a freewheeling diode, and a varistor, a direct voltage provided by a rectifier is able to be made available by closing or by a pulse-width-modulated actuation of an upper controllable semiconductor switch of the coil, and by opening the upper controllable semiconductor switch, a current driven by the coil in the de-excitation of the coil is freewheeling and/or flowing through the freewheeling diode and the varistor or through a component connected in parallel with the varistor.
Public/Granted literature
- US20220131484A1 DRIVE SYSTEM AND METHOD FOR OPERATING A DRIVE SYSTEM Public/Granted day:2022-04-28
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