Abstract: The invention relates to an electronic circuit (1) comprising a plurality of printed circuits (2) connected by at least one bus bar (4), each printed circuit (2) comprising at least two superposed layers enclosing at least a portion of said at least one bus bar (4), so as to cover said at least one bus bar (4).

Abstract: A DC/AC electrical power converter device having inlet terminals for electrically connecting to a DC electricity power supply network, outlet terminals for electrically connecting to an electric motor, a chopper electrical converter coupled to the inlet terminals, and an electrical inverter coupled between the chopper electrical converter and the outlet terminals. The converter device further includes a control unit for controlling the electrical inverter and that is configured to operate using pre-calculated pulse width modulation with pre-calculated unchanging switching instants for the controlled switches of the electrical inverter regardless of the frequency of rotation of the motor and of the voltage of the electricity network for connection to the device.

Abstract: A permanent magnet synchronous machine includes a permanent magnet rotor and a three-phase stator, the machine being associated with a control inverter for controlling the stator of the machine. A method of controlling the machine includes taking three simultaneous measurements by three respective Hall effect sensors arranged to have a central sensor and two lateral sensors, the two lateral sensors being placed at 120°/p mechanical relative to the central sensor about the rotation axis of the rotor, where p is the number of pairs of poles of the machine; determining the position of the rotor based on the three measurements; controlling the control inverter as a function of the determined position of the rotor; and prior to controlling the inverter, applying a time delay to the three measurement signals so that the control of the control inverter takes account of a variable desired lag angle.

Abstract: The invention relates to an electric DC-DC converter suitable for being supplied with power by a primary voltage source and for supplying control electronics of a three-phase inverter with power, said three-phase inverter being configured to control a fan of a ventilation system of an aircraft. The DC-DC converter is characterised in that it comprises a transformer (16), a primary circuit (12) comprising two loops forming a symmetrical assembly, at least one secondary circuit (14) comprising a secondary winding (LS), suitable for supplying, firstly, the inverter with an output voltage equal to twice the peak voltage at the terminals of the secondary winding (LS) and, secondly, a branch of the circuit suitable for supplying the inverter with an output voltage equal to the opposite of the peak voltage at the terminals of the secondary winding (LS), and in that the controllable transistors (M1, M2) are suitable for each being switched at zero voltage.

Abstract: A DC/AC electrical power converter device having inlet terminals for electrically connecting to a DC electricity power supply network, outlet terminals for electrically connecting to an electric motor, a chopper electrical converter coupled to the inlet terminals, and an electrical inverter coupled between the chopper electrical converter and the outlet terminals. The converter device further includes a control unit for controlling the electrical inverter and that is configured to operate using pre-calculated pulse width modulation with pre-calculated unchanging switching instants for the controlled switches of the electrical inverter regardless of the frequency of rotation of the motor and of the voltage of the electricity network for connection to the device.

Abstract: A permanent magnet synchronous machine includes a permanent magnet rotor and a three-phase stator, the machine being associated with a control inverter for controlling the stator of the machine. A method of controlling the machine includes taking three simultaneous measurements by three respective Hall effect sensors arranged to have a central sensor and two lateral sensors, the two lateral sensors being placed at 120°/p mechanical relative to the central sensor about the rotation axis of the rotor, where p is the number of pairs of poles of the machine; determining the position of the rotor based on the three measurements; controlling the control inverter as a function of the determined position of the rotor; and prior to controlling the inverter, applying a time delay to the three measurement signals so that the control of the control inverter takes account of a variable desired lag angle.

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 an electric DC-DC converter suitable for being supplied with power by a primary voltage source and for supplying control electronics of a three-phase inverter with power, said three-phase inverter being configured to control a fan of a ventilation system of an aircraft. The DC-DC converter is characterised in that it comprises a transformer (16), a primary circuit (12) comprising two loops forming a symmetrical assembly, at least one secondary circuit (14) comprising a secondary winding (LS), suitable for supplying, firstly, the inverter with an output voltage equal to twice the peak voltage at the terminals of the secondary winding (LS) and, secondly, a branch of the circuit suitable for supplying the inverter with an output voltage equal to the opposite of the peak voltage at the terminals of the secondary winding (LS), and in that the controllable transistors (M1, M2) are suitable for each being switched at zero voltage.

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 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: 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.