Abstract: Rotor of a rotary electric machine, comprising a body having two opposite lateral surfaces and a surface of revolution, two short-circuiting rings disposed in contact with each lateral surface of the body, and conductors disposed in slots formed on the surface of revolution of the body and each connected to the short-circuiting rings, characterised in that each conductor comprises at least one shoulder aligned with a lateral surface of the body.

Abstract: A cooling assembly (15) includes a conduit (16) including a side wall (17) and a fan (20) that includes a rotating electric machine (32), a power supply module (35) including three distinct single-phase self-transformers (79a, 79b, 79c), each single-phase self-transformer being magnetically decoupled from one another, each single-phase self-transformer (79a, 79b, 79c) surrounding the side wall (17) of the conduit.

Abstract: The invention relates to a cooling assembly (15) including: a conduit (16) including a side wall (17) and a fan (20) comprising: a rotating electric machine (32) a power supply module (35) including: three distinct single-phase self-transformers (79a, 79b, 79c) and magnetically decoupled, each self-transformer (79a, 79b, 79c) surrounding the side wall (17) of the conduit (16).

Abstract: A fan, characterized in that the conversion device (59) is made up of three separate single-phase autotransformers (79a, 79b, 79c) that are magnetically uncoupled, each single-phase autotransformer (79a, 79b, 79c) being connected to one of the input terminals (70a, 70b, 70c) and at least one of the output terminals (71a1, . . . , 71c1, 71a2, . . . , 71c2), and being able to modify the voltage values of a single-phase input AC current coming from the corresponding input terminal to obtain a modified output current on the or each output terminal (71a1, . . . , 71c1, 71a2, . . . , 71c2) corresponding to that single-phase autotransformer (79a, 79b, 79c).

Abstract: The invention relates to an underspeed detection device (2) for a motor (4) comprising a stator and a rotor movable relative to the stator, the detection device (2) comprising detection means (12) able to generate an electric rotation signal (ir) representative of the speed of rotation of the rotor, and electronic analysis means (20) able to analyze the rotation signal (ir) to detect an underspeed situation, characterized in that the detection device (2) further comprises conversion means (18) able to convert part (ip) of the electric rotation signal (ir) into a power supply current (ial) for the analysis means (20), and means for applying the power supply current (ial) to the analysis means (20) for their electric power supply.