Power rectifier circuit and systems, associated method, and aircraft comprising such a circuit or systems
First Claim
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1. A power rectifying circuit for electrical current delivered by an alternating current source, comprising:
- two separate commutation assemblies arranged to be connected to a supply terminal of a source, at least one commutation assembly comprising a plurality of commutation boost cells in cascade;
each boost cell comprising a diode connected between a first input terminal and a first output terminal of the cell, a switch means connected between a second input terminal and a second output terminal of the cell, and a capacitor connected between the two output terminals of the cell,the plurality of commutation boost cells of at least one of the commutation assemblies being arranged in cascade so that the first and second output terminals of one boost cell are connected respectively to the first and second input terminals of the following boost cell,the capacitors of the two terminal boost cells of the commutation assemblies having one terminal in common,wherein the power rectifying circuit further comprises blocking means for blocking all the switch means of the circuit in case of detection of a low-impedance fault in one of the boost cells, andthe power rectifying circuit further comprises means for detecting a low-impedance fault in a boost cell arranged to detect a voltage at terminals of the switch means of the cell during a predetermined time interval following a control signal to start the switch means to detect a fault of the boost diode of the cell or following a control signal to block the switch means to detect a fault of the switch means.
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Abstract
A power rectifying circuit for an electric current signal supplied by an alternating power source, which includes: two separate switching assemblies adapted to be connected to a power terminal of the source, wherein at least one switching assembly includes a plurality of boost cells in cascade, each boost cell including a diode, a switch mechanism and a capacitor, the capacitors of the two terminal boost cells of the switching assemblies having one terminal in common. The circuit may include two assemblies of boost cells, and can be used in electric systems onboard aircrafts.
13 Citations
15 Claims
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1. A power rectifying circuit for electrical current delivered by an alternating current source, comprising:
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two separate commutation assemblies arranged to be connected to a supply terminal of a source, at least one commutation assembly comprising a plurality of commutation boost cells in cascade; each boost cell comprising a diode connected between a first input terminal and a first output terminal of the cell, a switch means connected between a second input terminal and a second output terminal of the cell, and a capacitor connected between the two output terminals of the cell, the plurality of commutation boost cells of at least one of the commutation assemblies being arranged in cascade so that the first and second output terminals of one boost cell are connected respectively to the first and second input terminals of the following boost cell, the capacitors of the two terminal boost cells of the commutation assemblies having one terminal in common, wherein the power rectifying circuit further comprises blocking means for blocking all the switch means of the circuit in case of detection of a low-impedance fault in one of the boost cells, and the power rectifying circuit further comprises means for detecting a low-impedance fault in a boost cell arranged to detect a voltage at terminals of the switch means of the cell during a predetermined time interval following a control signal to start the switch means to detect a fault of the boost diode of the cell or following a control signal to block the switch means to detect a fault of the switch means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A power rectifying method for an electrical current signal delivered by an alternating current supply source, the method being achieved by a rectifying circuit comprising:
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two separate commutation assemblies arranged to be connected to a supply terminal of the source, at least one commutation assembly comprising a plurality of commutation boost cells in cascade, each boost cell comprising a diode connected between a first input terminal and a first output terminal of the cell, a switch means connected between a second input terminal and a second output terminal of the cell, and a capacitor connected between the two output terminals of the cell, the boost cells of at least one of the commutation assemblies being arranged in cascade so that the first and second output terminals of a boost cell are connected respectively to the first and second input terminals of the following boost cell, and the capacitors of the two terminal boost cells of the assemblies having one common terminal, the method comprising sequential control of each of the switch means so as to deliver DC voltages to the terminals of the terminal capacitors, the method comprising blocking all the switch means of the circuit in case of detection of a low-impedance fault in one of the boost cells, and the method comprising detecting a low-impedance fault in a boost cell arranged to detect a voltage at terminals of the switch means of the cell during a predetermined time interval following a control signal to start the switch means to detect a fault of the boost diode of the cell or following a control signal to block the switch means to detect a fault of the switch means. - View Dependent Claims (14, 15)
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Specification