Abstract: Electrical machine (10), and also method for producing an electrical machine, in particular for adjusting moving parts in a motor vehicle by motor, having a stator (12) into which a rotor (14) can be inserted, wherein the stator (12) has two permanent magnets (18) which are situated opposite one another and which are arranged in a pole housing (16) which forms a magnetic return path, and the pole housing (16) has flattened regions (20) between the two permanent magnets (18), the pole housing wall (26) forming two magnetic follower poles (22), which are situated opposite one another, on the said flattened regions, wherein the maximum dimension (25) of the pole housing (16) between the two flattened regions (20) which are situated opposite one another—axially in the region of the follower poles (22)—forms a width (24) across flats for the installation space of the electrical machine (10) which is equal to a maximum of 35 mm—and in particular a maximum of 30 mm.

Abstract: The invention relates to a brush-commutated electrical machine. The machine includes a rotor with rotor coils which are arranged on rotor poles. The machine also includes a commutator with commutator laminations which are electrically connected to the rotor coils, and having two brushes which are arranged offset in relation to one another, with the result that the brushes alternately commutate when the rotor moves. The machine also includes a stator having stator poles which are arranged in the circumferential direction and at least some of which are provided with stator magnets, wherein the stator poles are designed and/or arranged such that an alternating stator magnetic field which is generated by said stator poles in the circumferential direction is formed differently depending on the pole direction of the respective stator pole.

Abstract: The invention relates to a brush-commutated electrical machine (2), comprising: —a rotor (5) with rotor coils (7) which are arranged on rotor poles (6); —a commutator (9) with commutator laminations (8) which are electrically connected to the rotor coils (7), and having two brushes (10) which are arranged offset in relation to one another, with the result that the brushes (10) alternately commutate when the rotor (5) moves; —a stator (4) having stator poles (11) which are arranged in the circumferential direction and at least some of which are provided with stator magnets (3), wherein the stator poles (11) are designed and/or arranged such that an alternating stator magnetic field which is generated by said stator poles in the circumferential direction is formed differently depending on the pole direction of the respective stator pole (11).

Abstract: Electrical machine (10), and also method for producing an electrical machine, in particular for adjusting moving parts in a motor vehicle by motor, having a stator (12) into which a rotor (14) can be inserted, wherein the stator (12) has two permanent magnets (18) which are situated opposite one another and which are arranged in a pole housing (16) which forms a magnetic return path, and the pole housing (16) has flattened regions (20) between the two permanent magnets (18), the pole housing wall (26) forming two magnetic follower poles (22), which are situated opposite one another, on the said flattened regions, wherein the maximum dimension (25) of the pole housing (16) between the two flattened regions (20) which are situated opposite one another—axially in the region of the follower poles (22)—forms a width (24) across flats for the installation space of the electrical machine (10) which is equal to a maximum of 35 mm—and in particular a maximum of 30 mm.

Abstract: The invention relates to a method for detecting blocking or sluggishness (M1, M3) of a DC motor (2). The method comprises the following steps: applying a voltage pulse (Uv,t=Os) to the DC motor (2); monitoring a motor current (IMotor) flowing through the DC motor (2); detecting a maximum value of the motor current (IMotor) following the application of the voltage pulse; checking whether a change in the motor current (IMotor) after reaching the maximum value exceeds a specific amount; signalling the blocking or the sluggishness (M1, M3) of the DC motor (2) if the change in the motor current (IMotor) after reaching the maximum value exceeds the specific amount.

Abstract: The invention relates to a six-pole DC machine, particularly a DC motor for use in a motor vehicle, having a stator (16) excited preferably by a permanent magnet and a rotor (20) which is rotatably supported in a pole housing (12) and which has a wave winding (23) and a commutator (24), and having a brush carrier (28) for holding the brushes (26) and preferably additional components (30, 31; 32). In contrast to a full equipping, the brush arrangement has less than six brushes (26), which are arranged on the circumference of the commutator (24) at an angular distance of approximately 60° to each other. Thus, the ripple of the rotor current, the torque oscillations, and the noise emission are clearly reduced and free space is created on the brush carrier for accommodating suppressor components (30, 31; 32).

Abstract: The invention relates to a method for producing the rotor winding of an electrical machine having at least four exciter poles in the stator (11) and having a commutator rotor (13) with a number of slots (N) and pole teeth (Z) which deviates from the number of exciter poles, and having a number of individual tooth coils (S) and laminations (L) which is at least twice as high as the number of pole teeth, wherein the individual tooth coils are wound, starting from the first coil (S1) onto in each case that pole tooth with the lowest angular error (Wf) in relation to a pole division (Pt).

Abstract: An electrical machine, in particular an electric motor, has a first number (k) of commutator laminates (10, 12, 14) and brushes (16, 18), wherein the commutator laminates (10, 12, 14) are arranged distributed uniformly in the circumferential direction of a circumference of a laminate support (24). The brushes (16, 18) are arranged such that commutation times are distributed as uniformly as possible in order to reduce current ripple when using a wave winding and a number of brushes (16, 18) which is less than a number of poles (2p) in the electrical machine.

Abstract: The invention relates to a rotatory electric motor (1), comprising: a stator arrangement (2) with stator poles having permanent magnet stator poles (P) and consequent poles in an arrangement of consequent poles; and a rotor (6) having an armature made of a magnetically conductive material, with a ratio of the axial length (l) of the armature of the rotor (6) to a diameter (d) of the armature of the rotor from 1 to 2 being provided.

Abstract: The invention relates to a method for detecting blocking or sluggishness (M1, M3) of a DC motor (2). The method comprises the following steps: applying a voltage pulse (Uv,t=Os) to the DC motor (2); monitoring a motor current (IMotor) flowing through the DC motor (2); detecting a maximum value of the motor current (IMotor) following the application of the voltage pulse; checking whether a change in the motor current (IMotor) after reaching the maximum value exceeds a specific amount; signalling the blocking or the sluggishness (M1, M3) of the DC motor (2) if the change in the motor current (IMotor) after reaching the maximum value exceeds the specific amount.

Abstract: An electrical machine, in particular an electric motor, has a first number (k) of commutator laminates (10, 12, 14) and brushes (16, 18), wherein the commutator laminates (10, 12, 14) are arranged distributed uniformly in the circumferential direction of a circumference of a laminate support (24). The brushes (16, 18) are arranged such that commutation times are distributed as uniformly as possible in order to reduce current ripple when using a wave winding and a number of brushes (16, 18) which is less than a number of poles (2p) in the electrical machine.

Abstract: The invention relates to a method for producing the rotor winding of an electric machine comprising at least four exciter poles in the stator and a commutator rotor with a number of pole teeth which deviates from the number of exciter poles as well as a number of individual tooth coils and commutator segments that is at least twice as large as the number of pole teeth. In order to obtain low torque ripple and a long service life by optimally commutating the coils, a first coil is wound from an initial segment at a selectable offset angle to the initial segment on a first pole tooth, the winding wire is then fixed to another commutator segment at a predefined segment interstice length, whereupon a coil is successively wound from each segment onto the pole tooth having the lowest angular error relative the offset angle in relation to the pole separation of the stator, and the winding wire is then contacted on another segment at the same segment interstice length.

Abstract: The invention relates to a six-pole DC machine, particularly a DC motor for use in a motor vehicle, having a stator (16) excited preferably by a permanent magnet and a rotor (20) which is rotatably supported in a pole housing (12) and which has a wave winding (23) and a commutator (24), and having a brush carrier (28) for holding the brushes (26) and preferably additional components (30, 31; 32). In contrast to a full equipping, the brush arrangement has less than six brushes (26), which are arranged on the circumference of the commutator (24) at an angular distance of approximately 60° to each other. Thus, the ripple of the rotor current, the torque oscillations, and the noise emission are clearly reduced and free space is created on the brush carrier for accommodating suppressor components (30, 31; 32).

Abstract: The invention relates to a method for producing the rotor winding of an electrical machine having at least four exciter poles in the stator (11) and having a commutator rotor (13) with a number of slots (N) and pole teeth (Z) which deviates from the number of exciter poles, and having a number of individual tooth coils (S) and laminations (L) which is at least twice as high as the number of pole teeth, wherein the individual tooth coils are wound, starting from the first coil (S1) onto in each case that pole tooth with the lowest angular error (Wf) in relation to a pole division (Pt).

Abstract: An electric machine, as well as a method for operating such a machine, particularly for motorically moving movable parts in a motor vehicle, having a stator and a rotor, slots being developed on the rotor, in which individual conductor loops of electric coils are situated, which are contacted to commutator segments of a commutator and to an evaluating unit, which ascertains rotational speed data from the ripple of a motor current signal. The number of individual conductor loops of the coils is selected in such a way that the sequence of the number of the conductor loops in the order of their commutation approximately represents a sine function.

Abstract: The invention relates to an electrical machine with at least eight exciter poles in the stator and with a commutator rotor, comprising numerous pole teeth, differing from the number of exciter poles and the pole teeth thereof carrying at least one coil each and being connected with commutator laminates being in contact with each other in pairs vie contact bridges, wherein the number of laminates is a plurality of the pole teeth. To reduce the magnetic and electric ripple of the machine the number of the commutator laminates are a plurality of half of the pole pair number of the exciter poles, but not a plurality of the whole pole pair number, wherein the pole pair number has to be an even number.

Abstract: The invention relates to an electrical machine (10), and to a method for producing such an electrical machine, especially for adjusting mobile parts in a motor vehicle. Said machine comprises a rotor (20) on which a bipolar electrical winding (25) having a plurality of coils (26) is arranged. Said coils (26) are configured to give two symmetrical coil sections (27) each which are disposed symmetrical to each other relative to the axis of rotation (23) of the rotor (20), both coil sections (27) being simultaneously commutable.

Abstract: An electrical machine having at least four exciter poles in the stator and having a commutator rotor, which has a number of slots pole teeth on its circumference that is greater than the number of exciter poles, and having twice as large a number of commutator laminations, which via at least two carbon brushes serve to supply current to coils which are each wound on one of the pole teeth, and contact bridges each joined together diametrically opposed laminations. When there is an even number of slots, pole teeth and coils, the beginning and end of one coil of the coils disposed on adjacent pole teeth is connected directly to the laminations adjacent to one another, and the beginning and end of the other coil is connected via one of the contact bridges to the laminations adjacent to one another.

Abstract: An armature for a direct current motor, in particular for a permanent-magnet-excited DC motor, has an armature body, with armature teeth joined in one piece together via a short-circuit ring and offset by equal circumferential angles, each with a tooth neck for receiving an armature winding and with a tooth head that protrudes past the tooth neck in the circumferential direction. For an axial lengthening of the armature body that is simple and economical to produce, one preferably stacked flux-conducting element each, whose profile corresponds to the tooth head profile, is placed on the axially pointing end faces of the tooth heads.

Abstract: The invention relates to a method for producing the rotor winding of an electric machine comprising at least four exciter poles in the stator and a commutator rotor with a number of pole teeth which deviates from the number of exciter poles as well as a number of individual tooth coils and commutator segments that is at least twice as large as the number of pole teeth. In order to obtain low torque ripple and a long service life by optimally commutating the coils, a first coil is wound from an initial segment at a selectable offset angle to the initial segment on a first pole tooth, the winding wire is then fixed to another commutator segment at a predefined segment interstice length, whereupon a coil is successively wound from each segment onto the pole tooth having the lowest angular error relative the offset angle in relation to the pole separation of the stator, and the winding wire is then contacted on another segment at the same segment interstice length.