Abstract: An assembly for a magnetocaloric refrigeration unit includes a magnetocaloric core. Electromagnetic coils may be wound around the magnetocaloric core. The assembly further includes one or more cooling structures to extract the waste heat generated from the electromagnet coils. In some embodiments, the assembly may include one or more magnetic yokes disposed at the longitudinal ends of the magnetocaloric core. At least one of the top surface and the bottom surface of the magnetic yoke is provided with a micro-channel structure. In other embodiments, the assembly may include a coil housing disposed around the electromagnet coil. The coil housing includes cooling structures such as, but not limited to, a micro-channel structure, a fin structure, and a heat pipe structure.

Abstract: A magneto-caloric (MC) device is disclosed. The MC device comprise a rotor, a housing disposed about and concentric with the rotor and mechanically coupled to the rotor, wherein the housing comprises at least one axial slot, at least one set of MC elements, wherein each set of MC elements comprises at least one MC element, and at least one MC element of each set of MC elements is disposed within each of the at least one axial slots, and at least one working-segment corresponding to each set of MC elements, wherein each working-segment is disposed axially around the rotor and external to the housing, and wherein each working-segment comprises, a yoke substantially defining an inner volume comprising a first inner volume and a second inner volume, and a magnetic field production (MFP) unit magnetically coupled to the yoke and configured to provide a magnetic field within the first inner volume.

Abstract: A magnetic assembly having a magnetic field mechanism is proposed. The magnetic assembly includes a central limb and a top and bottom yoke. At least a first coil is disposed on a first side of one of the top and bottom yoke and at least a second coil is disposed on a second side. The magnetic assembly further includes a first magnetocaloric unit disposed on the first side between the top and bottom yoke and a second magnetocaloric unit disposed on the second side wherein the first magnetocaloric unit and the second magnetocaloric unit are alternately magnetized and demagnetized to generate thermal units.

Abstract: A rotor structure for an interior permanent magnet (IPM) electromotive machine is provided. The rotor structure includes at least one rotor lamination including a first group of slots and a second group of slots arranged to form a magnetic pole. The first group of slots may be arranged to form a magnetic flux along a direct axis of the magnetic pole resulting from the first and second group of slots. At least some of the first group of slots is arranged to receive a respective permanent magnet. The second group of slots is arranged to provide a separation for the magnetic flux from adjacent magnetic poles and lying along a quadrature axis of said magnetic pole. At least some of the second group of slots is arranged without a permanent magnet. The rotor structure further includes a magneto-mechanical barrier arranged to reduce a peak level of mechanical stress occurring by the first and/or the second group of slots and/or impede a flow of magnetic flux through the barrier.

Abstract: Disclosed herein are turbocharger systems and methods for their operation. In one embodiment a turbocharger system is disclosed. The turbocharger system comprises a turbine, a compressor, an air inlet, a first sensor, a second sensor, and a controller. The turbine is mechanically connected to the compressor and the air inlet is connected in fluid communication to the compressor. The first sensor and the second sensor are connected in operational communication with the air inlet and disposed a sufficient distance from one another to be capable of measuring a temperature differential caused by a hot boundary layer. The controller is connected in operational communication with the first sensor and the second sensor, and the controller is configured to detect surge precursors.