Abstract: The invention relates to a method for protecting a multi-phase autotransformer for an aircraft, including the steps of receiving (100) values of current output from (Ia, Ib) the first and second phases and a value of current input into (IB) the second phase; determining (101), from these received values of the second phase, a value of current representative of the operation (IFb) of the second phase; determining (102), as a function of this determined value and of the value of current output from (Ia) the first phase, a value representative of the homopolar current (Idet-a) flowing in the first phase; comparing (104) this value of homopolar current (Idet-a) with a first predetermined threshold value (S1) at least during a first predetermined period (D1); and controlling (106) the values of currents input into (IA, IB) and/or output from (Ia, Ib) the phases as a function of the said first comparison.

Abstract: The present disclosure is directed towards a method for protecting a multi-phase autotransformer for an aircraft including the steps of receiving values of current input into and output from the first and second phases; determining, as a function of these received values, values of current representative of the operation of the phases; determining, as a function of these determined values, a value representative of a homopolar current flowing in the first phase; comparing, in a first comparison, the value representative of the homopolar current flowing in the first phase with a first predetermined threshold value; and controlling the values of current input into the phases as a function of the first comparison.

Abstract: The invention relates to a method for protecting a multi-phase autotransformer for an aircraft, including the steps of receiving (100) values of current input into and output from (IA, IB, Ia, Ib) the first and second phases; determining (101), as a function of these received values, values of current representative of the operation (IFa, IFb) of these phases; determining (102), as a function of these determined values, a value representative of the homopolar current (Idet-a) flowing in the first phase; comparing this value of homopolar current with a first predetermined threshold value (D2); controlling (113) the values of current input into (IA, IB) the phases as a function of the said first comparison.

Abstract: The invention relates to a method for protecting a multi-phase autotransformer for an aircraft, including the steps of receiving (100) values of current output from (Ia, Ib) the first and second phases and a value of current input into (IB) the second phase; determining (101), from these received values of the second phase, a value of current representative of the operation (IFb) of the second phase; determining (102), as a function of this determined value and of the value of current output from (Ia) the first phase, a value representative of the homopolar current (Idet-a) flowing in the first phase; comparing (104) this value of homopolar current (Idet-a) with a first predetermined threshold value (S1) at least during a first predetermined period (D1); and controlling (106) the values of currents input into (IA, IB) and/or output from (Ia, Ib) the phases as a function of the said first comparison.

Abstract: The invention relates to a system and a process for direct current power supply of electrical networks. This system comprises a system for direct current power supply of electrical networks comprising at least two generators (G1, G2), an alternating current power distribution bar (11), a direct current power distribution bar (10), wherein these two power distribution bars (11, 10) are connected to one another by a rectifier unit (12) and a battery (13). The alternating current bar (11) is connected to the generators (G1, G2) via a transfer contactor (20). The direct current power distribution bar (10) is connected to the battery (13) via a first contactor (S1) in series with a second contactor (S2) positioned in parallel with a power diode (21).

Abstract: The invention relates to a system and a process for direct current power supply of electrical networks. This system comprises a system for direct current power supply of electrical networks comprising at least two generators (G1, G2), an alternating current power distribution bar (11), a direct current power distribution bar (10), wherein these two power distribution bars (11, 10) are connected to one another by a rectifier unit (12) and a battery (13). The alternating current bar (11) is connected to the generators (G1, G2) via a transfer contactor (20). The direct current power distribution bar (10) is connected to the battery (13) via a first contactor (S1) in series with a second contactor (S2) positioned in parallel with a power diode (21).