A modular DC motor includes a stator module having a stator core. The stator core has a ring-shaped base defining an axis and a plurality of stator posts protruding axially outward from the ring shaped based. A plurality of coils are wound around the stator posts. Each stator post extends axially beyond the corresponding coil. A shaft support is radially inward of the stator ring shaped base and is connected to the ring-shaped base. The shaft support is configured to support a rotor shaft relative to the stator core. The stator module is configured to receive one of a plurality of rotor modules. An operation of the modular DC motor is dependent on the physical configuration of the received one of the plurality of rotor modules. Each rotor module in the plurality of rotor modules has a distinct magnetic configuration from each other rotor module in the plurality of rotor modules.

A rotor (1) with a rotation axis (2) is provided for an electric drive machine (3). The rotor (1) has a plurality of rotor assemblies (4), each of which has a plurality of laminated cores (5) and a number of magnets (7) corresponding to a pole pair arrangement (6). The rotor also has a rotor shaft (8) on which the rotor assemblies (4) are fixed. The rotor assemblies (4) are positioned on the rotor shaft (8) such that they are rectified in accordance with their axial runout (9), while taking into account the pole pair arrangement (6). The rotor can reduce a thermally induced change in imbalance.

A rotor (1) with a rotation axis (2) is provided for an electric drive machine (3). The rotor (1) has a plurality of rotor assemblies (4), each of which has a plurality of laminated cores (5) and a number of magnets (7) corresponding to a pole pair arrangement (6). The rotor also has a rotor shaft (8) on which the rotor assemblies (4) are fixed. The rotor assemblies (4) are positioned on the rotor shaft (8) such that they are rectified in accordance with their axial runout (9), while taking into account the pole pair arrangement (6). The rotor can reduce a thermally induced change in imbalance.

An axial flux motor drive unit for an automobile includes a stator defining a core, an output defining an axis of rotation, a first rotor, a second rotor, and a thrust bearing. The first rotor is rotatable about the axis of rotation and is coupled to the output and disposed relative to the stator to create a first air gap. The second rotor is rotatable about the axis of rotation and is coupled to the output and is disposed relative to the stator to create a second air gap. The thrust bearing is coupled to the output and supports axial loads that are substantially parallel to the axis of rotation, and the first rotor is still rotatable about the axis of rotation when the second rotor is inoperable, and the second rotor is still rotatable when the first rotor is inoperable.

A rotating electric machine according to embodiments is a rotating electric machine including a rotor including a first core and being capable of rotating around a rotating shaft; and a stator disposed to face the rotor in the axial direction of the rotating shaft, the first core including a first pressed powder material having a plurality of first flaky magnetic metal particles and a first intercalated phase, the first flaky magnetic metal particles having an average thickness of from 10 nm to 100 μm, each first flaky magnetic metal particle having a first flat surface and a first magnetic metal phase including at least one first element selected from the group consisting of Fe, Co, and Ni, the average value of the ratio of the average length in the first flat surface with respect to the average thickness being from 5 to 10,000, the first intercalated phase existing between the first flaky magnetic metal particles and including at least one second element selected from the group consisting of oxygen (O), carbon (C), nitrogen (N), and fluorine (F), wherein in the first pressed powder material, the first flat surfaces are oriented approximately in parallel with a first principal plane of the first pressed powder material and have the difference in magnetic permeability on the basis of direction within the first principal plane, and the first principal plane of the first pressed powder material is disposed to be approximately perpendicular to the radial direction of the rotating electric machine.

A motor includes a stator and a rotor having an axis of rotation and a magnet. The stator includes a PCB having PCB panels. Each PCB panel is assigned to one electrical phase. Each PCB panel has a pair of PCB layers. Each PCB layer includes coils, and each coil in each PCB layer of a PCB panel is circumferentially aligned with a corresponding coil in another PCB layer. One coil in one PCB layer is coupled to a corresponding coil in another PCB layer with a via. A number of turns in each coil is a multiple of a number of electrical phases configured for the PCB stator. In addition, the vias that connect two coils in a pair of PCB layers that belong to a same electrical phase do not intersect coils in PCB layers that belong to other electrical phases of the PCB stator.

A motor includes a stator and a rotor having an axis of rotation and a magnet. The stator includes a PCB having PCB panels. Each PCB panel is assigned to one electrical phase. Each PCB panel has a pair of PCB layers. Each PCB layer includes coils, and each coil in each PCB layer of a PCB panel is circumferentially aligned with a corresponding coil in another PCB layer. One coil in one PCB layer is coupled to a corresponding coil in another PCB layer with a via. A number of turns in each coil is a multiple of a number of electrical phases configured for the PCB stator. In addition, the vias that connect two coils in a pair of PCB layers that belong to a same electrical phase do not intersect coils in PCB layers that belong to other electrical phases of the PCB stator.

A rotor (1) for an electrical axial flux machine (2) that can be operated as a motor and/or generator. The rotor includes a support (3), a plurality of magnet elements (4) arranged against, on, or in the support (3) and running radially from the interior outwards, the magnet elements (4) being magnetized in a circumferential direction and being arranged individually or in groups in series around the circumference with alternating opposing magnetization directions, and a plurality of flux conduction elements (5) which conduct the magnetic flux and are arranged against, on, or in the support (3) and around the circumference, between the magnet elements (4). A flux distributing element (6) which distributes the magnetic flux is arranged between at least one of the magnet elements (4) and a flux conduction element (5) that is arranged adjacently thereto in the circumferential direction.

A rotor (1) for an electrical axial flux machine (2) that can be operated as a motor and/or generator. The rotor includes a support (3), a plurality of magnet elements (4) arranged against, on, or in the support (3) and running radially from the interior outwards, the magnet elements (4) being magnetized in a circumferential direction and being arranged individually or in groups in series around the circumference with alternating opposing magnetization directions, and a plurality of flux conduction elements (5) which conduct the magnetic flux and are arranged against, on, or in the support (3) and around the circumference, between the magnet elements (4). A flux distributing element (6) which distributes the magnetic flux is arranged between at least one of the magnet elements (4) and a flux conduction element (5) that is arranged adjacently thereto in the circumferential direction.

A motor includes a stator and a rotor having an axis of rotation and a magnet. The stator includes a PCB having PCB panels. Each PCB panel is assigned to one electrical phase. Each PCB panel has a pair of PCB layers. Each PCB layer includes coils, and each coil in each PCB layer of a PCB panel is circumferentially aligned with a corresponding coil in another PCB layer. One coil in one PCB layer is coupled to a corresponding coil in another PCB layer with a via. A number of turns in each coil is a multiple of a number of electrical phases configured for the PCB stator. In addition, the vias that connect two coils in a pair of PCB layers that belong to a same electrical phase do not intersect coils in PCB layers that belong to other electrical phases of the PCB stator.