DRIVE SYSTEM AND METHOD FOR OPERATING A DRIVE SYST

专利名称：DRIVE SYSTEM AND METHOD FOR

OPERATING A DRIVE SYSTEM

发明人：LERCH, Heiko,HERBOLD, Marcus申请号：EP12746018.6申请日：20120719公开号：EP2737623B1公开日：20180912

摘要：The invention relates to a drive system and a method for operating a drivesystem, comprising at least one converter feeding an electric motor and a safety monitor,it being possible for an alternating current, in particular a multi-phase current, to be fedto the electric motor by means of controllable power semiconductors belonging to thepower electronics of the converter, a current sensor being arranged in at least twophases of the alternating current, characterized in that the current values measured bythe current sensors are also fed to control electronics belonging to the converter, whichelectronics, in accordance with a machine model, generate drive signals, in particularpulse width modulated drive signals, for the power semiconductors, in particular as afunction of the measured current values, wherein means for determining a first modelvalue for a physical variable are provided in the control electronics and the controlelectronics are connected to a safety monitor for the purpose of data exchange, inparticular by means of electric lines, so that the first model value determined can be fedto the safety monitor, wherein the current values measured in a third phase are also fedto a safety monitor, which has at least one means for determining a second model valuefor a physical variable, and wherein the safety monitor comprises comparison means with

which the first model value can be compared with the second model value.

申请人：Sew-Eurodrive GmbH & Co. KG,SEW EURODRIVE GMBH & CO,SEW-EURODRIVEGMBH & CO. KG

地址：DE

国籍：DE

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