Abstract: A method and a control device operate a three-phase brushless direct current motor with phase windings that are fed by an inverter connected to a voltage source having a high potential and a low potential. The semiconductor switches of the inverter are arranged in a bridge circuit and are controlled such that current always flows through two phase windings during motor operation. The motor is operated with normal commutation when the rotational speed is greater than or equal to a minimum rotational speed, wherein the angles are shifted by 60°. During start-up operation, up to the minimum rotational speed, a high-potential-side commutation angle of a phase winding is shifted toward a low-potential-side commutation angle of the phase winding by an angle greater than 0° and less than or equal to 60° with respect to the normal commutation.

Abstract: An electrical assembly connection, in particular a motor connection for an electrical radiator fan motor, for a motor vehicle, has a connected cable harness. The cable ends of the cable harness are connected to an assembly-end connection terminal. Two housing parts of a connection housing are combined so as to form a hollow space in the assembled state and accommodate the connection-end cable ends of the cable harness. Wherein one of the housing parts contains at least one cable bushing which has a conical guide inner contour which opens in the direction of the connection terminal. A clamping part rests against the guide inner contour, and wherein, as a result of tensile loading on the cable harness, the clamping part slides along the corresponding guide inner contour and increases the clamping action on the corresponding cable as the tensile loading increases.

Abstract: An electrical motor connection, in particular of an electrical cooling fan motor for a motor vehicle, has a connected cable harness whose cable ends are connected to a motor-end connecting terminal. A connecting housing has two housing parts, which are joined together in the assembled state to form a cavity, and which hold connection-end cable ends of the cable harness. One of the housing parts has at least one filling opening, which opens into the cavity, for filling with a curable encapsulation compound, and with the cured encapsulation compound surrounding the cable ends in the area of the connecting terminal, and being joined to the housing parts.

Abstract: A method processes a motor variable of a DC motor of an actuating device for a motor vehicle. The DC motor is supplied by an on-board system DC voltage, in which the armature current and the motor voltage of the DC motor are detected and the actuating position of an actuating element is determined from a time profile of the armature current by counting the current ripple contained therein. During an initial phase, the armature current which rises over time is replicated by a function which is determined from pairs of values for the motor voltage and the armature current which are detected in a time interval. A current value of the armature current expected at a later point in time is extrapolated. In the event of a discrepancy between the armature current detected at this later point in time and the extrapolated armature current, a ripple count is started.