Abstract: A control device (8) for an inverter (2) that feeds an electric machine (3), wherein the control device (8) is configured to provide pulse-width-modulated switching signals (15) at a carrier frequency to drive switching elements (12) of the inverter (2), wherein the control device (8) is configured to ascertain the carrier frequency within at least one operating range (22, 23) depending on a piece of operating point information that describes an operating point defined by a rotation speed and a torque of the electric machine (3) in such a way that the carrier frequency is reduced within the at least one operating range (22, 23) compared to a maximum carrier frequency operating point at which a maximum carrier frequency is specified in the operating range.

Abstract: A rotor (1) comprising a rotor shaft (13), a rotor core (14) having a core length, windings (12), and two impregnation rings (11), the windings (12) forming protruding windings ends (121), each one of the two impregnation rings (11) comprising an annular portion (111) and a deflector portion (112), the annular portion (111) comprising radial openings (113); and a method for impregnating the rotor (1) comprising starting a rotation of the rotor shaft (13) and impregnating the windings (12) with an impregnating agent through two nozzles respectively located upward each one of the two impregnation rings (11) and oriented towards the radial openings (113), the impregnation agent being guided by the deflector portion (112) towards the protruding windings ends (121) on both sides of the rotor (1) at a same time, in order to impregnate the windings (12) through the core length.

Abstract: The invention is related to an integrated drive system including an electric motor having a stator and a rotor, an inverter configured to control the electric motor, a gearbox configured to transmit a torque provided by the electric motor, and a coolant system, wherein the coolant system includes a cooling fluid, configured to follow one cooling path for cooling the inverter, the rotor, the stator and the gearbox.

Abstract: The invention specifies an electrical machine (1, 1a . . . 1c) which comprises a housing (8), a stator (5) which is arranged in the housing (8) and a rotor (3) which is rotatably mounted in the housing (8). At least one first coolant duct (9) of a first cooling circuit (15) and at least one second coolant duct (10, 10a, 10b) of a second cooling circuit (16) are arranged in the region of the stator (5) in the housing (8). In this case, the coolant ducts (9, 10, 10a, 10b) and the housing (8) form a heat exchanger between the first cooling circuit (15) and the second cooling circuit (16). In addition, the invention specifies a gear motor comprising the electrical machine (1, 1a . . . 1c), in which gear motor the transmission is hydraulically connected to the at least one second coolant duct (10, 10a, 10b) of the second cooling circuit (16). The invention also specifies a vehicle (27) which is driven by the said electrical machine (1, 1a . . . 1c) or by the said gear motor.

Abstract: Described is an electrical machine (1) which comprises two end shields (6, 7), a stator (5) which is arranged between the two end shields (6, 7) and has a stator laminated core (11, 11a) and stator windings (12) arranged therein, and a rotor (3) which is arranged in the stator (5) and has a rotor shaft (2) mounted rotatably in the two end shields (6, 7). The electrical machine (1) furthermore has cooling channels (13) arranged fully in the stator laminated core (11, 11a) and edged by the latter. Furthermore described are a gear motor (30) comprising such an electrical machine (1), as well as a vehicle (20) comprising such an electrical machine (1).

Abstract: The electrical system comprises a cover (206) for closing the compartment (204) defined in a housing (202). The electrical system further comprises a removable element (214) configured to be mounted proximate to the housing (202), and a mobile hook (208) attached to one amongst the cover (206) and the housing (202), and configured to take an engaged position with the other amongst the cover (206) and the housing (202) and a disengaged position from the other from the cover (206) and the housing (202), wherein the removable element (214), when mounted proximate to the housing (202), is configured to cooperate with the mobile hook (208) to prevent the cover (206) from being separated from the housing (202), thereby preventing an opening of the compartment (204).

Abstract: In a control device for discharging a DC link capacitor by means of a discharging device including a load resistor and a switch element connected in series with the load resistor, the control device includes a generator unit, which is configured to generate a pulse width-modulated actuation signal for the switch element with an ascertained duty cycle, and a control unit, which is configured to ascertain the duty cycle in such a way that, in the time average, a desired discharge current flows through the load resistor.

Abstract: A power converter having a primary side and a secondary side galvanically isolated therefrom, includes a secondary-side functional unit operable in dependence on auxiliary information generated on the primary side, a primary-side voltage supply device arranged to provide a supply voltage, a power transmission device, which has a switching unit for switching the supply voltage and a transmission unit, which is set up to transmit the switched supply voltage to the secondary side, to convert the supply voltage into an operating voltage for the functional unit, a primary-side modulation device to provide a clock signal to the switching unit and to vary a frequency of the clock signal by the auxiliary information, and a secondary-side demodulation device arranged to generate at least one use signal representing the auxiliary information from a secondary voltage provided by the transmitter unit and to provide a use signal to the functional unit.

Abstract: A rotor lamination is subdivided into a plurality of equidistant sectors of equal size, each including a first half-sector and a second half-sector separated from the first half-sector by a separation plane. A through-opening is formed in the first half-sector and has a first leg side, of which the imaginary extension intersects the separation plane below a radially outwardly open acute angle, a second leg side, which runs parallel to the first leg side and of which the imaginary extension intersects the separation plane radially further outwards than the imaginary extension of the first leg side, and an edge connecting ends of the leg sides furthest away from the separation plane. A further through opening formed mirror-symmetrically to the first through-opening with respect to the separation plane is formed in the second half-sector, wherein the edge has an equidistant portion equidistant to an outer contour of the rotor lamination.

Abstract: The invention relates to a control device for an inverter which includes three half-bridges each having a first power switching element connected to a first DC voltage potential and a second power switching element connected to a second DC voltage potential. The control device is arranged for driving the power switching elements for converting a DC voltage present between the DC voltage potentials into a polyphase AC current in a normal operating mode and for transferring the inverter from the normal operating mode into a safe operating mode. The control device is further set up to alternately drive the power switching elements in the safe operating mode for switching single-phase active short circuits and for switching two-phase active short circuits.

Abstract: Parking lock (1, 19, 24) for a motor vehicle, having a movable locking means for impinging a parking lock wheel (14), disposed in the interior of a transmission housing (2), with a holding force, wherein the movable locking means, by means of a shifting shaft (3) that is rotatable by a drive motor (4) and a cam (7) that is coupled to the shifting shaft (3) is pivotable between a releasing state, in which the parking lock wheel (14) is rotatable, and a blocked state, in which a rotation of the parking lock wheel (14) is blocked, wherein the drive motor (4) is disposed outside the transmission housing (2), the shifting shaft (3) penetrates the transmission housing (2), and the cam (7) is disposed within the transmission housing (2). The invention moreover relates to a transmission having a parking lock (1, 19, 24) of this type, and to a drive installation for electrically drivable motor vehicle.

Abstract: A stator plate packet (7, 7a, 7b) for a stator (5) of an electrical machine (1) is described, which comprises several stator plates (6) stacked one against the other and with stator grooves (13) open towards the inside for receiving a stator winding (8), wherein the stator plates (6) are welded together by means of a plurality n of external weld seams (14) or weld seam portions which are evenly distributed over the periphery of the stator plate packet (7, 7a, 7b). The weld seams (14) or weld seam portions each run from a first end face (B) of the stator plate packet (7) to a second end face (C) of the stator plate packet (7) and each extend over an angle (?) with respect to the rotational axis (A) of the electrical machine (1). The angle (?) lies in a range of ??360°/n?10%. Furthermore, an electrical machine (1) with such a stator plate packet (7, 7a, 7b) or stator (4), and a vehicle (15) with such an electrical machine (1), are described.

Abstract: Rotor (1) for an electrical machine (101), having: a rotor core (2) with a plurality of radially outwardly extending rotor legs (3); a number of exciter windings (4) corresponding to the number of rotor legs (3), each wound around one of the rotor legs (3); and a pot-like end cap (5) which covers the end faces of the exciter windings (4) and has a passage opening (6) for a shaft (7), wherein the exciter windings (4) and the end cap (5) delimit intermediate spaces (16), in each of which a casting compound (17) is arranged.

Abstract: Arrangement (1) comprising an electric machine (2), a gearbox (3), a shaft (9) coupling the electric machine (2) with the gearbox (3) and having an axial blind bore (18) extending from a machine-side end (19) of the shaft (9) into the gearbox (3), a coolant insertion element (21) configured to supply a coolant into the bore (18) and a coolant conduction element (22) extending inside the bore (18) from the machine-side end (19) into the gearbox (3) and defining a flow path (23) for the inserted coolant.

Abstract: A stator for an electric machine includes a plurality of pins arranged on concentric circles at different distances to a stator center in slots, each concentric circle forming a layer, wherein six pins in different layers are serially connected to one another and form a winding. A first pin is located in a first slot in the 6n-1 layer, wherein n is an integer. A second pin is located in a second slot in the 6n layer, wherein the second slot has a first radial distance to the first slot in a first circumferential direction of the stator. A third pin is located in a third slot in the 6n-2 layer. A fourth pin is located in a fourth slot in the 6n-3 layer. A fifth pin is located in the first slot in the 6n-5 layer. A sixth pin is located in the second slot in the 6n-4 layer.

Abstract: A stator for an electric machine includes a plurality of pins arranged on concentric circles at different distances to a stator center in slots in the stator, and each concentric circle forms a layer. In each case, six pins in different layers are serially connected to one another and form a winding. A first pin of the winding is located in a first slot in the 6n-1 layer, wherein n is an integer. A second pin of the winding is located in a second slot in the 6n layer. A third pin of the winding is located in the first slot in the 6n-2 layer. A fourth pin of the winding is located in the second slot in the 6n-3 layer. A fifth pin is located in the first slot in the 6n-5 layer. A sixth pin of the winding is located in the second slot in the 6n-4 layer.

Abstract: A method for producing an intermediate product for an electrical machine includes supplying a mould for a housing part. A stator laminated core is laid inside the mould and the housing part is produced by introducing a molten metal alloy into the mould. The molten metal alloy comes directly into contact with the stator laminated core. The method relates to an electrical machine with such an intermediate product, and a vehicle with such an electrical machine.

Abstract: A device for discharging a DC link capacitor includes a discharge device which is connected in parallel with the DC link capacitor and by which, on receipt of a discharge signal requesting discharge, a current flow can be generated which, in the presence of a first signal state of a control signal, has a lower current intensity than in the presence of a second signal state of the control signal; a voltage detection device by which a voltage signal describing a capacitor voltage dropping across the intermediate circuit capacitor can be generated; and a control device with a signal generating unit which is arranged to generate a reference signal whose value at the time of receipt of the discharge signal is dependent on the voltage signal and is reduced relative to the voltage signal, and a comparison unit which is arranged to compare the voltage signal with the reference signal.

Abstract: The inverter (110) comprises input terminals (IT+, IT?), output terminals (OT), controllable switches (Q, Q?) connected to the input terminals (IT+, IT?) and to the output terminals (OT) and a control device (116) configured to control the controllable switches (Q, Q?) so as to convert a DC voltage at the input terminals (IT+, IT?) into an AC voltage at the output terminals (OT) intended to drive an asynchronous electric motor (108) to achieve a target torque (T*), selectively: in a first mode of operation in which the target torque (T*) is determined according to a torque determination method, and in response to a rotor temperature (Tr), in a second mode of operation in which losses in the rotor are decreased relative to the first mode of operation while the target torque (T*) remains determined according to the torque determination method of the first mode of operation.

Abstract: Rotor for an electrical machine has a rotor core with a plurality of radially outwardly extending rotor legs, a number of exciter windings corresponding to the number of rotor legs, each wound around one of the rotor legs, and a separating device, having a number of separating portions corresponding to the number of rotor legs, which are arranged between a respective pair of adjacent exciter windings and extend axially between two opposing end faces of the rotor, a first annular connecting portion which connects together the separating portions at one of the end faces, and a second annular connecting portion which connects together the separating portions at the other of the end faces.