An electromagnetic device is provided. It includes a plurality of input magnetic field generating devices, which will induce magnetic fields in output current generating devices. In one construction, the electromagnetic device can be operably coupled to a work input device wherein the electromagnetic device can be used as a generator set in combination with the energy input device. The input and output magnetic devices are arranged in radial arrays about a work input shaft. The output magnetic devices each include a core and a respective coil with the cores each having a longitudinal axis generally parallel to the axis of rotation of the shaft. The input devices and the output devices are mounted in respective carriers with the output device carrier being movable relative to the input device carrier.

An apparatus for converting mechanical energy into electrical energy includes a rotor having a first end portion and a second end portion, a first stator including a plurality of magnet poles, and a second stator including a plurality of magnet poles. The rotor is located about a shaft along a rotational axis. The rotor includes a plurality of north and south poles alternating along a circumference of the rotor. The plurality of magnet poles of the first stator are rotated 180 electrical degrees with respect to the plurality of magnet poles of the second stator.

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 n1 slots (105, 106; 105, 106) are arranged between the first coil (82.1) and the second coil (82.2).

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 n1 slots (105, 106; 105, 106) are arranged between the first coil (82.1) and the second coil (82.2).

A multi-rotor electric machine includes a first rotor, a stator, and a second rotor. The stator is disposed concentric with the first rotor and is disposed radially outward from the first rotor. The stator has a first plurality estate or windings disposed proximate first stator teeth of the stator. The stator has a second plurality of stator windings disposed proximate second stator teeth of the stator. The second rotor is disposed concentric with and is disposed radially outward from the stator. The second rotor is rotatable relative to the first rotor.

This rotating electric machine rotor has a rotor coil composed of; a lower coil field wound around the outer circumference of a winding drum portion of a bobbin; and a mountain-wound coil field wound around the outer circumference of the lower coil field. A cross point in the mountain-wound coil field and a cross point in the lower coil field are shifted from each other in the circumferential direction. Thus, it becomes possible to shift the cross point positions without changing the thickness of the winding drum portion of the bobbin and without using a tape or the like.

A slip ring device includes an insulating molded body in which a pair of slip rings and a pair of connecting conductors are provided. The insulating molded body includes a molded body main body portion disposed in a position further from a rotor main body than a bearing provided on a shaft, the slip rings being provided in the molded body main body portion, an opposing portion disposed between the bearing and the rotor main body, and a pair of beam portions that connect the molded body main body portion to the opposing portion, the connecting conductors being provided respectively in the beam portions. A pair of shaft grooves respectively accommodating the pair of beam portions are provided in the shaft. A spreading suppression portion for preventing resin with which a field coil is impregnated from spreading into the shaft grooves is provided in the opposing portion.

An apparatus for converting mechanical energy into electrical energy includes a rotor having a first end portion and a second end portion, a first stator including a plurality of magnet poles, and a second stator including a plurality of magnet poles. The rotor is located about a shaft along a rotational axis. The rotor includes a plurality of north and south poles alternating along a circumference of the rotor. The plurality of magnet poles of the first stator are rotated 180 electrical degrees with respect to the plurality of magnet poles of the second stator.

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).

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).