Abstract: A method is provided for making an excitation coil (22) of a rotor (1) of a rotating electrical machine. The method includes a step of winding at least one electrical conductor element (30), the winding forming, in superimposed layers, a horizontal and vertical juxtaposition of turns of the electrical conductor element. The method further includes a step of impregnating to fill with a binder (34) in interstices formed between adjacent turns. The impregnating step is carried out during the step of winding of the electrical conductor element (30).

Abstract: The invention concerns a method for making an excitation coil (22) of a rotor (1) of a rotating electrical machine including: a step of winding at least one electrical conductor element (30), the winding forming, in superimposed layers, a horizontal and vertical juxtaposition of turns of the electrical conductor element; a step of impregnating to fill with a binder (34) interstices formed between adjacent turns. The invention is characterized in that the impregnating step is carried out during the step for winding of the electrical conductor element (30).

Abstract: Current rectifying equipment for rotary electrical machines has a rear bearing, of the type comprising a plurality of positive diodes (2) supported by a support (1) in the form of a plate, a plurality of negative diodes (7) supported by the rear bearing (6) of the machine, a device (9) for connecting the positive and negative diodes together, and structure for generating a forced axial stream of a coolant fluid, the support (1) for the diodes carrying cooling fins (4) which extend in the axial stream (F1) of the coolant fluid in the radial direction of the machine. The equipment includes means for effecting mixed cooling of the support for the negative diodes by convection and conduction. The invention can be used for alternators for motor vehicles.

Abstract: The invention concerns a current-rectifying arrangement for rotary electrical machines of the type comprising a support (50, 51, 51?) for a plurality of positive diodes (66), a support for a plurality of negative diodes, forming part of the rear bearing of the machine, and a device for cooling by the creation of a forced axial flow of a cooling fluid through the rectifying arrangement, the support for the positive diodes carrying radial cooling fins (60) on its front face oriented towards the axis of the machine; the positive diode support device (66) being produced in the form of at least one moulded piece (50, 51, 51?), whose face oriented towards the aforementioned axis carries fine cooling fins (60). The invention can be used in alternators for motor vehicles.

Abstract: The invention concerns a current-rectifying arrangement for rotary electrical machines of the type comprising a support (50, 51, 51′) for a plurality of positive diodes (66), a support for a plurality of negative diodes, forming part of the rear bearing of the machine, and a device for cooling by the creation of a forced axial flow of a cooling fluid through the rectifying arrangement, the support for the positive diodes carrying radial cooling fins (60) on its front face oriented towards the axis of the machine; the positive diode support device (66) being produced in the form of at least one moulded piece (50, 51, 51′), whose face oriented towards the aforementioned axis carries fine cooling fins (60).