A liquid-cooled rotating electric machine may include an inner stator and outer rotor configured to rotate about the stator. A hub may be disposed within the inner stator and a heat exchanger may be disposed in the hub. The heat exchanger may be configured to enable the flow a liquid through it to dissipate heat from the stator.

The present invention relates to electric submersible pumps that have two or more permanent magnet motors and more specifically to such systems wherein permanent magnet motors are aligned using phase and pole alignment marks.

An axial field rotary energy device or system includes an axis, a PCB stator and rotors having respective permanent magnets. The rotors rotate about the axis relative to the PCB stator. A variable frequency drive (VFD) having VFD components are coupled to the axial field rotary energy device. An enclosure contains the axial field rotary energy device and the VFD, such that the axial field rotary device and the VFD are integrated together within the enclosure. In addition, a cooling system is integrated with the enclosure to cool the axial field rotary energy device and the VFD.

A position sensor includes a plurality of E-shaped ferromagnetic cores arranged to define a circular opening therethrough to receive a shaft. Each E-shaped ferromagnetic core has a plurality of teeth, wherein adjacent E-shaped ferromagnetic cores of the arranged plurality of E-shaped ferromagnetic cores have an overlapping tooth. The position sensor further includes a frame surrounding the arranged plurality of E-shaped ferromagnetic cores, with the E-shaped ferromagnetic cores coupled to the frame.

A geared motor includes a gear unit, a first, a second, or a third electric motor, and an adapter part situated between the gear unit and the electric motor. On its side facing the electric motor, the adapter part has a first, a second, and a third centering device, and on the side facing away from the electric motor, it is connected to the gear unit. The centering devices are radially set apart from one another, and the second centering device is situated radially between the first and third centering devices. The electric motor has an axially protruding centering ring, which is centered by only a single one of the centering devices of the adapter part, and the other centering devices are radially set apart from the centering ring and/or have no centering function, e.g., for the centering ring.

A brushless motor comprising a frame; a rotor assembly comprising a shaft, a rotor core and a bearing assembly, the bearing assembly being mounted to the frame; and at least one stator comprising a C-shaped stator core, the stator core comprising a back and first and second arms, wherein at least one of the first and second arms includes a protrusion that contacts the frame so as to inhibit radial movement of the stator core towards the rotor assembly.

A rotor for an electric machine may include a stack of ferrous laminations and a rotor core. The stack may be divided into a plurality of segments in a circumferential direction. At least one permanent magnet may be arranged between two adjacent segments of the plurality of segments. Each of the plurality of segments may have an opening extending in a radial direction outwards from a radially inner surface. The rotor core may connect the two adjacent segments. The rotor core may be formed via casting a non-ferrous material in a space disposed radially inwards of the plurality of segments and into the radially outwards extending opening of each of the plurality of segments. The opening of each of the plurality of segments may have a generally fir-tree shaped section profile.

An electric motor may comprise a rotor and a stator. One or more first cables connected to a first power converter circuit of are wrapped adjacent to at least some stator teeth of a stator core to form at least a first portion of one or more coil windings. One or more second cables connected to a second power converter circuit of the plurality of power converter circuit also may be wrapped adjacent to at least some of the stator teeth to form at least a second portion of the one or more coil windings.

An axial field rotary energy device or system includes an axis, a PCB stator and rotors having respective permanent magnets. The rotors rotate about the axis relative to the PCB stator. A variable frequency drive (VFD) having VFD components are coupled to the axial field rotary energy device. An enclosure contains the axial field rotary energy device and the VFD, such that the axial field rotary device and the VFD are integrated together within the enclosure. In addition, a cooling system is integrated with the enclosure to cool the axial field rotary energy device and the VFD.

A transport device in the form of a planar motor having at least one transport segment which forms a transport plane and having at least one transport unit, which can be moved at least two-dimensionally in the transport plane, to allow more versatile process management, is provided in the transport device. At least one coupling apparatus for releasably coupling the transport unit to the coupling unit is arranged on the transport unit and, on the coupling unit in each case, the transport unit and the coupling unit can be coupled, at least temporarily, by the coupling apparatuses to form an assembly by way of a relative movement in the transport plane. The coupling apparatuses interact in the coupled assembly in order to limit a relative movement between the transport unit and the coupling unit in at least one degree of freedom of movement.