Abstract: The external rotor for an electric machine includes a cylindrically shaped receptacle having a peripheral wall and a magnet-receiving assembly including segments assembled to the inner surface of the peripheral wall so as to define a cylindrically shaped stack. The segments are shaped so as to yield magnet-receiving portions in the ring-shaped stack, and permanent magnets are secured to the magnet-receiving portion of the magnet receiving assembly.

Abstract: A cooling arrangement for electric machines where cooling plates are maintained against the inner surface of the stator and are interconnected by a cooling tube that carries the stator generated heat outside of the machine.

Abstract: The external rotor for an electric machine includes a cylindrically shaped receptacle having a peripheral wall and a magnet-receiving assembly including segments assembled to the inner surface of the peripheral wall so as to define a cylindrically shaped stack. The segments are shaped so as to yield magnet- receiving portions in the ring-shaped stack, and permanent magnets are secured to the magnet-receiving portion of the magnet receiving assembly.

Abstract: An embodiment of a liquid cooled external rotor electric machine includes a stator, a generally cylindrical liquid cooling assembly secured to the stator therein, a rotor including a generally cylindrical shaped support having permanent magnets secured to its inner surface, an output shaft coaxially mounted to the rotor therein and a coupling assembly that biases the cooling assembly onto the stator and operatively mounts together the stator and cooling assembly to the output shaft. Mounting the shaft to the rotor and to the liquid cooling system yields a compact assembly where no housing is required for the alignment of the stator and rotor.

Abstract: A cooling assembly for the stator of an electric machine provided with coils including heads is described herein. The cooling assembly includes a generally cylindrical cooling body provided with opposite longitudinal ends and at least one head-cooling element mounted to one of the longitudinal end of the body; the head-cooling element being so configured as to enclose heads of the coils and to receive heat conducting material therein.

Abstract: A cooling arrangement for electric machines where cooling plates are maintained against the inner surface of the stator and are interconnected by a cooling tube that carries the stator generated heat outside of the machine.

Abstract: A cooling assembly for the stator of an electric machine provided with coils including heads is described herein. The cooling assembly includes a generally cylindrical cooling body provided with opposite longitudinal ends and at least one head-cooling element mounted to one of the longitudinal end of the body; the head-cooling element being so configured as to enclose heads of the coils and to receive heat conducting material therein.