Error determination in front of the direction for a drive circuit and the drive unit comprising these and method for determining an error in a drive circuit

摘要

Error determination before direction, which determines whether an error in a drive circuit is present which, with the use of a plurality of switching elements (t1 to t6), which represent a drive device, an electrical device (12), which in operation, a counter electromotive force is generated, characterized by:a temperature detecting means (36uv, 36vw, 36wu; 34) for detecting a temperature (tuv, tvw, twu) of the electrical device (12) and / or a temperature (tinv) of the control device; andmeans for determining whether during the blocking of control electrodes of the switching elements (t1 to t6) an error has occurred, based on the temperature detection device (36uv, 36vw, 36wu; 34) detected temperature (tuv, tvw, twu; tinv), while all the control electrodes of the switching elements (t1 to t6) are blocked in the drive circuit.