Power assembly for portable equipment with current limitation with hysteresis

摘要

The arrangement (20) has a control apparatus (S) for controlling an electric motor (M) which is fed from a direct current power source. The motor has a control characteristic curve between an electric current and a rotational speed of an output shaft (22) of the motor. The control apparatus has a current-limiter (26) that limits the current flowing through the electric motor to a maximum value. The apparatus limits the current consumption of the motor in a range of low rotational speeds to values which are smaller than characteristic curve values, as a function of the rotational speed. An independent claim is also included for a method for controlling an electric motor for a drive arrangement.