Abstract: The present invention concerns a protective cover (400) designed to cover power, filtering and control modules of an electronic assembly for a rotating electric machine for a motor vehicle.

Abstract: The present invention relates to an electronic assembly (10) for a rotary electric machine (1) for a motor vehicle. Said electronic assembly is characterized by comprising: blocks (100, 200, 300) of electronic components, the blocks having different heat dissipation needs, the blocks being: a power block (100), a filter block (200), a control block (300), and a device (10?) for cooling said blocks (100, 200, 300); said cooling device (10?) comprising: a protective cover (400) suitable for covering the power, filter and control blocks (100, 200, 300), said protective cover comprising openings (401, 402, 403, 404) suitable for generating cooling air flows which differ according to the heat dissipation needs of each of the power (100), control (200) and filter (300) blocks; and cooling elements (101, 201) coupled with said protective cover (400).

Abstract: An electricity supply system having double power-storage devices which is suitable for implementation in an electric or hybrid motor vehicle. The supply system is intended for being connected to a power network of the vehicle. The supply system is of the type that includes a first power-storage device, having a first specific energy, a first specific power and a first operating voltage (Ue), and a second power-storage device, having a second specific energy that is lower than the first specific energy, a second specific power that is higher than the first specific power and a second operating voltage (Up) that is higher than the first operating voltage (Ue). The first and second power-storage devices are electrically coupled by a bidirectional DC-DC converter controlled in accordance with the operating states of the vehicle. The DC-DC converter includes a floating capacitor connected in series between the first and second power-storage devices.

Abstract: The present invention concerns a protective cover (400) designed to cover power, filtering and control modules of an electronic assembly for a rotating electric machine for a motor vehicle.

Abstract: The present invention relates to an electronic assembly (10) for a rotary electric machine (1) for a motor vehicle. Said electronic assembly is characterised by comprising: blocks (100, 200, 300) of electronic components, the blocks having different heat dissipation needs, the blocks being: a power block (100), a filter block (200), a control block (300), and a device (10?) for cooling said blocks (100, 200, 300); said cooling device (10?) comprising: a protective cover (400) suitable for covering the power, filter and control blocks (100, 200, 300), said protective cover comprising openings (401, 402, 403, 404) suitable for generating cooling air flows which differ according to the heat dissipation needs of each of the power (100), control (200) and filter (300) blocks; and cooling elements (101, 201) coupled with said protective cover (400).

Abstract: The invention relates to an electrical network (1) for automotive vehicle comprising: —a first electrical subnetwork (2), said first electrical subnetwork (2) comprising in parallel an electrical generator (21), a first energy store (22), at least one first electrical consumer (23); a second electrical subnetwork (3), said second electrical subnetwork (3) comprising in parallel a second energy store (31), a second electrical consumer (32), a third electrical consumer (33); a DC/DC converter (4), configured to charge the second energy store (31) from the first subnetwork.

Abstract: An electricity supply system having double power-storage devices which is suitable for implementation in an electric or hybrid motor vehicle. The supply system is intended for being connected to a power network of the vehicle. The supply system is of the type that includes a first power-storage device, having a first specific energy, a first specific power and a first operating voltage (Ue), and a second power-storage device, having a second specific energy that is lower than the first specific energy, a second specific power that is higher than the first specific power and a second operating voltage (Up) that is higher than the first operating voltage (Ue). The first and second power-storage devices are electrically coupled by a bidirectional DC-DC converter controlled in accordance with the operating states of the vehicle. The DC-DC converter includes a floating capacitor connected in series between the first and second power-storage devices.

Abstract: A connection device is provided for a rotary electric machine of the type supplied with power by a plurality of first pins arranged on a bearing of an axis of the machine at predetermined angular intervals around the axis at a first predetermined distance. The connection device includes a plurality of second pins that are arranged around the axis at a second predetermined distance, which is greater than the first predetermined distance, and that are electrically connected to a plurality of first terminals able to be connected to the first pins. The connection device also includes a main part made of plastics material with a plurality of overmoulded metal bars connecting the second pins and the first terminals.

Abstract: Method used in a vehicle provided with an electrical power system (1), including an electrical engine/generator (3) and first electrical power storage (2) having a first nominal voltage, and moreover provided with a backup electrical system (5), including a second electrical power storage (6) having a second nominal voltage less than the first nominal voltage. The electrical power system and the backup system are connected by a reversible DC/DC converter (9). A first optimal power current strength (IESS1), flowing in the first storage (2), and a second optimal power current strength (IESS2), flowing in the second storage (6), are determined on the basis of operational parameters for the first and second electrical power storages so as to minimize losses due to heat dissipation. The first and second optimal power current strengths (IESS1, IESS2) are also determined on the basis of a reversible DC/DC converter output.

Abstract: The invention relates to a variable speed drive comprising a direct-current power bus having a positive line (16) and a negative line (17), and an inverter module (14) supplied by the direct-current bus in order to supply a variable voltage to an electric load (M). The drive comprises an energy-recovery device (10) comprising a first direct-current/direct-current converter (20), the output stage of the first converter (20) being connected in series to the positive line of the direct-current bus, a second direct-current/direct-current converter (30), the input stage of the second converter (30) being connected between the positive line and the negative line of the direct-current bus, and an electric energy storage module (Cs) connected in parallel with the input stage of the first converter (20) and with the output stage of the second converter (30).

Abstract: A variable-frequency drive that includes a DC power supply bus with a positive line and a negative line, and an inverter module powered by the DC bus for supplying a variable voltage to an electric load. The inverter includes a first DC/DC converter including output terminals connected in series on the positive line of the DC bus, a second DC/DC converter including input terminals connected between the positive line and the negative line of the DC bus, a filtering capacitor connected in parallel to the input terminals of the first converter and to the first output terminals of the second converter, and an electric power storage module connected in parallel to the second output terminals of the second converter.

Abstract: The invention relates to a speed controller comprising: at the input, a rectifier module (12) in order to generate, on a power bus (10, 11), a direct voltage from an alternating voltage available on an electrical supply network (A), a bus capacitor (Cb) connected between a positive line and a negative line of the power bus, an inverter module (13) supplied by the power bus and controlled to deliver an alternating voltage to an electric load (2), a device (14) for protecting the controller consisting of a first electronic switch of the JFET transistor type (T1) and a second electronic switch (T2) mounted on the power bus, in parallel with the JFET transistor (T1).

Abstract: A variable-frequency drive that includes a DC power supply bus with a positive line and a negative line, and an inverter module powered by the DC bus for supplying a variable voltage to an electric load. The inverter includes a first DC/DC converter including output terminals connected in series on the positive line of the DC bus, a second DC/DC converter including input terminals connected between the positive line and the negative line of the DC bus, a filtering capacitor connected in parallel to the input terminals of the first converter and to the first output terminals of the second converter, and an electric power storage module connected in parallel to the second output terminals of the second converter.

Abstract: The invention relates to a speed controller comprising: a rectifier module (12) for generating a direct voltage on a power bus (10, 11) from an alternating voltage available on an electrical power-supply network (A); a bus capacitor (Cb) connected between a positive line and a negative line of the power bus; and an inverter module (13) powered by the power bus and controlled to deliver an alternating voltage to an electrical load (2); a protection device (14) for protecting the controller against overcurrents linked with voltage variations on the electrical power-supply network (A).

Abstract: The invention relates to a variable speed drive comprising a direct-current power bus having a positive line (16) and a negative line (17), and an inverter module (14) supplied by the direct-current bus in order to supply a variable voltage to an electric load (M). The drive comprises an energy-recovery device (10) comprising a first direct-current/direct-current converter (20), the output stage of the first converter (20) being connected in series to the positive line of the direct-current bus, a second direct-current/direct-current converter (30), the input stage of the second converter (30) being connected between the positive line and the negative line of the direct-current bus, and an electric energy storage module (Cs) connected in parallel with the input stage of the first converter (20) and with the output stage of the second converter (30).

Abstract: The voltage surge protection device comprises at least one input designed to be connected to an electric power supply system, at least one output designed to be connected to an electric circuit to be protected, and voltage surge limiting means connected between the inputs and outputs to protect said electric circuit against voltage surges able to be applied on the inputs. The voltage surge limiting means comprise bidirectional series electronic limiting means comprising at least two inputs/outputs connected in series with at least one of said inputs, and which are turned on when a low voltage drop occurs when a circulating current is lower than a current limiting value, and limiting said circulating current by increasing a voltage drop between said inputs/outputs.

Abstract: The control device of an electric power converter comprises a control circuit controlling turn-on of power semi-conductor arms. The control circuit comprises a module for determining possible turn-offs of an arm, and a module for selecting turn-offs enabling double switching from among the possible turn-offs. Selection of turn-offs enabling an arm of said converter to be turned off according to the turn-offs enabling double switching in other arms. The electric converter comprises one such control device. The method comprises determination of turn-offs enabling double switching from among the possible turn-offs, and selection of turn-offs to turn an arm of said converter off according to the turn-offs enabling double switching.

Abstract: A device controlling a JFET power electronic switch of normally ON type, including a main gate control circuit powered by a main power source for driving the gate of the JFET switch, a protection switching device that is switchable between two states, an auxiliary circuit controlling the switching device, and an auxiliary power source whose positive terminal is connected to the source of the JFET switch and whose negative terminal is connected to the gate of the JFET switch, bypassing the gate control circuit in one of the two positions of the switching device. The switching device can be an electromagnetic or electronic switch.

Abstract: The invention relates to a speed controller comprising: at the input, a rectifier module (12) in order to generate, on a power bus (10, 11), a direct voltage from an alternating voltage available on an electrical supply network (A), a bus capacitor (Cb) connected between a positive line and a negative line of the power bus, an inverter module (13) supplied by the power bus and controlled to deliver an alternating voltage to an electric load (2), a device (14) for protecting the controller consisting of a first electronic switch of the JFET transistor type (T1) and a second electronic switch (T2) mounted on the power bus, in parallel with the JFET transistor (T1).

Abstract: The invention relates to a speed controller comprising: a rectifier module (12) for generating a direct voltage on a power bus (10, 11) from an alternating voltage available on an electrical power-supply network (A); a bus capacitor (Cb) connected between a positive line and a negative line of the power bus; and an inverter module (13) powered by the power bus and controlled to deliver an alternating voltage to an electrical load (2); a protection device (14) for protecting the controller against overcurrents linked with voltage variations on the electrical power-supply network (A).