Various embodiments include stator for an electrical machine comprising: a stator winding; and a yoke with a plurality of slots. There are a plurality of conductor segments connected to one another, wherein each conductor segment has one respective axially internal inner section and two respective axially external outer sections. The respective inner section of each conductor segment is embedded into a respective slot. Ducts for coolant flow in the axial direction are formed at least in a portion of each of the slots. The stator defines, at least in a first axial end region, a first coolant chamber fluidically encapsulated from a surrounding area. The first coolant chamber surrounds at least a portion of the respective outer sections of each of the conductor segments situated in the first axial end region. The first coolant chamber is fluidically connected to the ducts to conduct coolant into and/or out of the ducts.

Various embodiments include stator for an electrical machine comprising: a stator winding; and a yoke with a plurality of slots. There are a plurality of conductor segments connected to one another, wherein each conductor segment has one respective axially internal inner section and two respective axially external outer sections. The respective inner section of each conductor segment is embedded into a respective slot. Ducts for coolant flow in the axial direction are formed at least in a portion of each of the slots. The stator defines, at least in a first axial end region, a first coolant chamber fluidically encapsulated from a surrounding area. The first coolant chamber surrounds at least a portion of the respective outer sections of each of the conductor segments situated in the first axial end region. The first coolant chamber is fluidically connected to the ducts to conduct coolant into and/or out of the ducts.

A rotary electric machine includes a stator extending along an axis and having teeth arranged about the axis. The teeth are circumferentially spaced apart by slots. Conductors extend around the teeth and through the slots. The conductors are electrically connected to one another to form phases. Cooling devices are provided in the slots. Each cooling device is fluidly connected to an inlet tube for supplying cooling fluid to the cooling device and an outlet tube for removing cooling fluid from the cooling device. A manifold includes a first cooling channel fluidly connected to each inlet tube and a second cooling channel fluidly connected to each outlet tube such that all the cooling devices in the machine are fluidly connected in parallel.

A rotary electric machine includes a stator extending along an axis and having teeth arranged about the axis. The teeth are circumferentially spaced apart by slots. Conductors extend around the teeth and through the slots. The conductors are electrically connected to one another to form phases. Cooling devices are provided in the slots. Each cooling device is fluidly connected to an inlet tube for supplying cooling fluid to the cooling device and an outlet tube for removing cooling fluid from the cooling device. A manifold includes a first cooling channel fluidly connected to each inlet tube and a second cooling channel fluidly connected to each outlet tube such that all the cooling devices in the machine are fluidly connected in parallel.

An electric machine with variable torque generation having a tunable Halbach array configuration. The electric machine includes a magnet assembly for generating a magnetic field. The magnet assembly includes a plurality of fixed magnets disposed in a ring arrangement so that fixed magnets having a north pole faced toward the rotor or stator are alternated with fixed magnets having a south pole faced toward the rotor or stator, a plurality of rotatable magnets disposed within a respective slot formed between two adjacent fixed magnets, a drive assembly for turning the rotatable magnets within the slots to vary the magnetic field generated by the magnet assembly in the rotor or stator, the drive assembly configured to turn the rotatable magnets between a first position wherein the magnetic field in the rotor or stator is augmented and a second position wherein the magnetic field in the rotor or stator is cancelled.

An electric machine with variable torque generation having a tunable Halbach array configuration. The electric machine includes a magnet assembly for generating a magnetic field. The magnet assembly includes a plurality of fixed magnets disposed in a ring arrangement so that fixed magnets having a north pole faced toward the rotor or stator are alternated with fixed magnets having a south pole faced toward the rotor or stator, a plurality of rotatable magnets disposed within a respective slot formed between two adjacent fixed magnets, a drive assembly for turning the rotatable magnets within the slots to vary the magnetic field generated by the magnet assembly in the rotor or stator, the drive assembly configured to turn the rotatable magnets between a first position wherein the magnetic field in the rotor or stator is augmented and a second position wherein the magnetic field in the rotor or stator is cancelled.

A rotor assembly including a body member, a first shaft member and a second shaft member. The body member includes an inner wall defining a cavity inside the body member. The first shaft member is inserted into the body member and extends at least partially in the cavity of the body member. The second shaft member is inserted into the body member and extends from a first end portion of the body member to a second end portion of the body member. The second shaft member is at least partially surrounded by the first shaft member. The first shaft member is configured to provide a medium along the inner wall of the body member, and the second shaft member is configured to provide the medium at each of the first end portion and the second end portion of the body member.

An electric machine has a rotor and a stator defined by a stator laminated core (15). The rotor and the stator are separated from one another by a can (20) for the cooling of the stator using a liquid coolant. The electric machine has a stator component (100) formed as a single piece and composed of the stator laminated core (15) and of a plastics work-piece (10) molded thereon. The plastics workpiece (10) is formed as the can (20).

An electric machine has a rotor and a stator defined by a stator laminated core (15). The rotor and the stator are separated from one another by a can (20) for the cooling of the stator using a liquid coolant. The electric machine has a stator component (100) formed as a single piece and composed of the stator laminated core (15) and of a plastics work-piece (10) molded thereon. The plastics workpiece (10) is formed as the can (20).

A stator for an electric machine includes a laminated stator core having stator slots arranged along an axial direction parallel to a stator axis, electric conductors arranged in the stator slots; and fluidtight slot insulators arranged in the stator slots between the electric conductors and the laminated stator core, wherein the slot insulators each have a cooling channel spaced apart from the electric conductors in a radial direction arranged orthogonally to the axial direction.