DEVICE FOR DETERMINING SLUGGISHNESS OR A BLOCKED STATE OF AN ELECTRIC MOTOR

摘要

The present invention relates to a device for determining sluggishness or a blocked state of an electric motor (M), wherein the device comprises the following characteristics: a power semiconductor switch (S), connected between a positive supply voltage connection (UB+) of a supply voltage source (UB) and the electric motor (M) itself, wherein the power semiconductor switch (S) is configured to control the current flowing through the electric motor (M) and wherein the power semiconductor switch (S) is further configured to acquire a current flow through the power semiconductor switch (S) and to provide a corresponding current-flow signal (l_sense / Kelvin source); and an evaluation unit (StS) configured to acquire the current-flow signal (l_sense / Kelvin source) and on the basis of the current-flow signal (l_sense / Kelvin source) to determine the presence of sluggishness or a blocked state of the electric motor (M).