Abstract: An electrical machine, which may be a motor and/or a generator has a rotor mounted to rotate about an axis. A plurality of magnetic poles are spaced circumferentially around the rotor in the bore. The rotor comprises a shell shaped to provide a toroidal bore centered on the axis. A slit extends circumferentially around the rotor. The slit penetrates through the shell into the bore. The electrical machine also includes a stator that is supported in the bore by one or more supports extending through the slit of the rotor. The stator carries plural windings that are spaced apart around the bore.

Abstract: The present disclosure is directed towards a method of manufacturing a permanent magnet such that the magnet defines a channel for allowing circulation of a coolant through the permanent magnet, or defines a channel for allowing circulation of the coolant through an interface between the permanent magnet and a substrate. Magnets made by this method may be useful for manufacturing and/or operating a machine, such as a motor, engine, or sensor.

Abstract: According to an aspect, a rotor for a Synchronous Reluctance Motor (SynRM) is provided. The rotor core includes alternating layers of radially fabricated flux carrier and flux barrier material, defining flux barriers extending through the core without bridges and/or center-posts. In some embodiments, the alternating layers include layers of permanent magnet (PM) and soft magnetic composite (SMC) material fabricated on, and adhered directly to, the rotor shaft. A corresponding method for manufacturing the SynRM is also provided.

Abstract: Described herein is a radiation shielding composition and a method for making comprising: (i) a boron-containing powder wherein the boron-containing powder comprises at least a bimodal particle size distribution, and (ii) a metal, wherein the metal encapsulates the ceramic powder to form the radiation shielding composition.