Abstract:
Method for producing a distributed lap winding for polyphase systems, in particular for alternators, wherein, in a first step, a chain of laps (60) is formed with a linking direction (R), characterized in that, in a further step, at least one lap (60) is rotated with its lap sides (66) at right angles to the linking direction (R) such that at least one lap side (66) of one lap (60) is arranged alongside at least one lap side (66) of another lap (60) such that the at least one lap side (66) of one lap (60) and the at least one lap side (66) of another lap (60) are arranged at a position which corresponds to a slot position.
Abstract:
The invention relates to an electric machine (10) comprising a stator (16) that has a stator core (17). Said core has a substantially cylindrical opening (60) having a central axis (63), an internal diameter (D17i) and an external diameter (D17a) and the opening (60) accommodates a rotor (20). The stator core (17) has an axial length (L17a) and said core (17) holds a stator winding (18) together with the rotor (20) which has a rotational axis (66). The rotor (20) has an axial end face (69), on which a fan (30) with fan blades (72) is located and is non-rotatably connected to the rotor (20). The rotor (20) has an electromagnetically excitable path (75) having a pole shank (78), a respective pole plate (22, 23) adjoining each axially rotational end (80, 82) of said shank. Claw poles (24) having a north polarity extend from one pole plate (22) and claw poles (25) having a south polarity extend from the other pole plate (23), said claw poles (24, 25) alternating between north and south polarities around the periphery of the rotor (20). The electromagnetic path (75) between two opposite-facing sides (69, 90) of the pole plates (22, 23) has an axially rotational length (L75), the ratio of the axial length (L17a) of the stator core (17) to the axially rotational length (L75) of the electromagnetic path (75) of the rotor (20) being between 0.68 and 1.0. The pole shank (78) has a diameter (D78) and an axially rotational length (L78), and a ratio of the axially rotational length (L78) of the pole shank (78) to the diameter (D78) of the pole shank (78) is between 0.21 and 0.36. The ratio of the internal diameter (D17i) of the stator core (17) to the external diameter (D17a) of the stator core (17) is greater than 0.788 and less than 0.854.
Abstract:
Method for producing a stator winding (18) of an electric machine (10), in particular an AC generator, wherein the stator winding (18) has at least n phase windings (120, 121, 122, 123, 124), and one phase winding (120, 121, 122, 123, 124) has a plurality of directly successive wound coils (82) with coil sides (88) and coil side connectors (91), wherein the coils (82) are divided into first coils (82.1) and second coils (82.2), with a forming tool (100), in which slots (105, 106; 105', 106') are provided which are suitable for accommodating the coils (82), wherein a first coil (82.1) is arranged in a slot (105; 105'), and a second coil (82.2) is arranged in another slot (105; 105'), characterized in that n-1 slots (105, 106; 105', 106') are arranged between the first coil (82.1) and the second coil (82.2).
Abstract:
The invention relates to a stator winding for a transversal flow machine, the stator winding (98) being embodied as a cord (244) and said cord (244) having a plurality of individual wires (245). Said stator winding (98) is embodied as a coil with several windings (245), characterised in that one or more windings (245) are layered in the axial direction or radial direction.
Abstract:
The invention relates to an electric machine (10) comprising a stator (16) that has a stator core (17). Said core has a substantially cylindrical opening (60) having a central axis (63), and the opening (60) accommodates a rotor (20). The stator core (17) has an axial length (L17a) and said core (17) holds a stator winding (18) together with the rotor (20) which has a rotational axis (66). The rotor (20) has an axial end face (69), on which a fan (30) with fan blades (72) is located and is non-rotatably connected to the rotor (20). The rotor (20) has an electromagnetically excitable path (75) having a pole shank (78), a respective pole plate (22, 23) adjoining each axially rotational end (80, 82) of said shank. Claw poles (24) having a north polarity extend from one pole plate (22) and claw poles (25) having a south polarity extend from the other pole plate (23), said claw poles (24) and (25) alternating between north and south polarities around the periphery of the rotor (20). The rotor (20) has a gap (21) with a longitudinal direction (86) between two neighbouring claw poles (24, 25) of opposite polarity, a permanent magnet system (88) being provided in the gap (21) between the two claw poles (24, 25). The permanent magnet system (88) has a length (L88) in the longitudinal direction (86) of the gap (21). The rotor comprises a pole shank (78) located radially inside the claw poles (24, 25), said shank having an axially rotational length (L78), and the ratio of the length (L88) of the permanent magnet system (88) to the axially rotational length (L78) of the pole shank (78) is greater than 1.3.
Abstract:
The invention relates to an electric machine (10) comprising a rotor (20) which has a rotational axis (66), said rotor (20) having an electromagnetically excitable path (75) with an axial end face (69), on which a fan (30) with fan blades (72) is located and is non-rotatably connected to the rotor (20). The electromagnetically excitable path (75) has a pole shank (78) with an axially rotational pole shank length (L78), a respective pole plate (22, 23) adjoining each axially rotational end (80, 82) of said shank. Claw poles (24) having a north polarity extend from one pole plate (22) and claw poles (25) having a south polarity extend from the other pole plate (23), said claw poles (24, 25) alternating between north and south polarities around the periphery of the rotor (20). The machine also comprises a stator (16) that has a stator core (17), said core having a substantially cylindrical opening (60) with a central axis (63) and the opening (60) accommodating the rotor (20). The stator core (17) has an axial length (L17a) and said core (17) holds a stator winding (18) which is accommodated in grooves (96) that open radially inwards, each groove (96) being delimited in both peripheral directions by a respective tooth (103). The teeth (103) have a minimum tooth width (B103) in the peripheral direction and a tooth height (H103) in the radial direction, and the ratio of the tooth height (H103) to a minimum tooth width (B103) ranges between 0.45 and 1.02.
Abstract:
Method for producing a stator winding (18) of an electric machine (10), in particular an AC generator, wherein the stator winding (18) has at least n phase windings (120, 121, 122, 123, 124), and one phase winding (120, 121, 122, 123, 124) has a plurality of successive wound coils (82) with coil sides (88) and coil side connectors (91), wherein the coils (82) are divided into first coils (82.1) and second coils (82.2), with a forming tool (100), in which slots (105, 106) are provided which are suitable for accommodating the coils (82), wherein a first coil (82.1) is arranged in a slot (105), and a second coil (82.2) is arranged in the same slot (105).