Abstract: The ventilation apparatus (20) according to the invention comprises a fan (30) including a rotary machine (32) and a fan wheel (34), an observation module, a module for connecting the device (20) to a power source (12), the fan wheel (34) being set in rotation by the rotary machine (32) when the apparatus (20) is connected to the power source (12), and rotating freely when the apparatus (20) is disconnected from the power source (12). The device (20) further includes an internal power module electrically connected between the rotary machine (32) and the observation module, the internal power module being able to recover an electric current generated by the rotary machine (32) driven by the fan wheel (34), to power the observation module (62), when the apparatus (20) is disconnected from the power source (12).

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: A fan (10) includes: an external ferrule (12), whose internal surface (20) delimits a vein of air (14), a wheel (26) provided with blades (28) rotatably mounted in the ferrule (12) for setting into motion the vein of air, a motor (22) for driving the wheel (26), an electric circuit (40) including components (44) for controlling and powering the motor (22), which circuit (40) includes elements for cooling the components (44) by circulating air taken from the vein of air (14), wherein the cooling elements include a downstream area intake tapping aperture (52) and an upstream tapping aperture (54, 56) for reintroducing air formed through the internal surface (20) of the ferrule (12), and at least one continuous cooling conduit (50) connecting the upstream and downstream tapping apertures isolating the components (44) of the electric circuit from the air circulating in the cooling conduit.

Abstract: An electronic temperature sensor for measuring the junction temperature of an electronic power switch (4) of a static converter (8) includes an injection source of a calibrated measurement current (20) and a differential voltage measurement amplifier (76; 276). The electronic temperature sensor includes a first series connection (26) element and a second series connection (28) connected respectively to the inlet terminals (78, 80) of the differential voltage amplifier (76; 276). The first and second series connection elements (26, 28; 224, 226) are configured to protect the amplifier against a high voltage, have essentially identical electrical characteristics and are included in the set formed by resistances and high-voltage (HV) rapid diodes.

Abstract: The ventilation device according to the invention includes a fan and an inverter. The fan comprises a rotary electrical machine and a wheel for setting an air flow into motion, integral with the rotary machine to set it in rotation. The inverter is connected to the rotary machine and, in one motor power mode of the ventilation device, is suitable for forming the supply current of the rotary machine. The inverter is suitable for being connected to a power supply network. The inverter is reversible and is, in a generating mode of the ventilation device, suitable for converting the electrical energy supplied by the rotary machine when it is driven mechanically by the wheel and injecting said converted electrical energy into the power supply network.

Abstract: The fan comprises a first electromechanical module including a wheel supported by a shaft coupled to a driving motor, a second mechanical module including a body delimiting a space for receiving the first electromechanical module in which the wheel and the driving motor are received, and a third electronic module including a plurality of electronic components. The third electronic module includes a housing in which the plurality of electronic components is housed, the housing also comprising a deflagration protection exhaust comprising an upper wall and two inclined walls extending on either side of the upper wall so as to form a space extending substantially axially between the upper surface of the housing and the upper wall in order to allow the discharge of overpressures in case of deflagration.

Abstract: The fan has an arrangement for monitoring the ageing of at least one of its bearing, the arrangement including a reference ambient temperature sensor and a processing circuit for comparing the temperature difference between the temperature measured by the temperature sensor or by each temperature sensor fitted directly on the corresponding bearing and the temperature measured by the reference temperature sensor with a first predetermined value.

Abstract: A wheel assembly including a wheel having an axis X-X? and a system for braking the wheel, in which a fan is arranged in order to cool the braking system. The rotor (14) of the fan is formed by a hub (20) and a plurality of blades (22) which rotate about the axis (X-X?) of the wheel and has a wall (54). The rotor (14) of the fan comprises a rotating collar (24) which connects the outer radial ends of the blades (22), so that an operational clearance (56) is provided between the wall (54) of the air circulation channel (50) and the collar (24).

Abstract: The ventilation device according to the invention includes a fan and an inverter. The fan comprises a rotary electrical machine and a wheel for setting an air flow into motion, integral with the rotary machine to set it in rotation. The inverter is connected to the rotary machine and, in one motor power mode of the ventilation device, is suitable for forming the supply current of the rotary machine. The inverter is suitable for being connected to a power supply network. The inverter is reversible and is, in a generating mode of the ventilation device, suitable for converting the electrical energy supplied by the rotary machine when it is driven mechanically by the wheel and injecting said converted electrical energy into the power supply network.

Abstract: The wheel assembly comprises a wheel having an axis X-X? and a system for braking the wheel. A fan is arranged in the space of the wheel in order to draw in the flow of hot air (8) which is from the braking system and which is produced during the braking of the wheel. The rotor (14) of the fan is formed by a hub (20) and a plurality of blades (22) which rotate about an axis (X-X?), the rotor (14) being arranged in an air circulation channel (50) which is formed in the space of the wheel so that an operational clearance (56) is provided between a wall (54) of the air circulation channel (50) and the radial ends of the rotor (14). The rotor (14) of the fan comprises a rotating collar (24) which is arranged at the outer radial end of the blades (22), and the operational clearance (56) is provided between the wall (54) of the air circulation channel (50) and the collar (24).

Abstract: This motor of the type comprising a magnet-less rotor with studs, centred on an axis, and a stator which comprises a casing for conducting magnetic flux, at least two windings which are arranged on the casing and on the circumference of a circle which surrounds the rotor and which is centred on the axis, and at least two magnets, each being arranged on the circumference of the circle between two successive windings of the stator, wherein each magnet has in cross-section a width which increases progressively from the axis of the motor to the outer side of the motor.

Abstract: The rectification stage (18) having: an autotransformer (40) for twelve-phase rectification; two rectifiers (50A, 50B) each of which is connected at the input to three separate phases of the autotransformer (40); two interphase inductors (51A, 51B); and a filtration stage (54) which receives at the input the centre points of the two interphase inductors (51A, 51B). The two interphase inductors (51A, 51B) have a common core (52) which defines a magnetic circuit and all the windings of the two interphase inductors (51A, 51B) are wound on this common core for the magnetic coupling thereof.

Abstract: The power supply interface (10) includes a rectification stage (18), having an autotransformer (40) connected to a power supply network (12), and a signal conditioning stage (20) having an output (28) supplying power to a load (14). The conditioning stage (20) includes a power module (22), for conditioning the power supply signal, and a control module (24) designed to control the power module (22). An autotransformer (40) includes at least one additional winding (62A, 62B, 62C; 64A, 64B, 64C) connected to the control module (24) to supply it with electrical power, the or each additional winding being magnetically coupled to at least one primary winding (44A, 44B, 44C) of the autotransformer (40). The power is supplied to a motor in an airplane.