Abstract: The invention relates to a differential mode and common mode choke comprising: a ferromagnetic core comprising three branches (1, 2, 3) extending between a bottom part (5) and a top part (4), a first coil (b1) wound around the first lateral branch (1), a second coil (b3) wound around the second lateral branch (3), the first lateral branch (1) being separated from the top part (4) by a first air gap (e1) and from the bottom part (5) by a second air gap (e10), the second lateral branch (3) being separated from the top part (4) by a first air gap (e3) and from the bottom part (5) by a second air gap (e30), the central branch (2) being separated from the top part (4) by a first air gap (e2) and from the bottom part (5) by a second air gap (e20).

Abstract: The invention relates to a method of control implemented in a variable speed drive, said method comprising the following steps of: for a switching of a transistor (100) of the rectifier stage (1), determination of a first control signal (Ce) corresponding to a first gate current (Ige) to be applied to the gate of the transistor to be switched so as to act on the rate of the variation of a first voltage (Vrec) generated by the switching, for a switching of a transistor (200) of the inverter stage (2), determination of a second control signal (Cs) corresponding to a second gate current to be applied to the gate of the transistor to be switched so as to act on the rate of the variation of a second voltage (Vinv) generated by the switching, determination of a first instant of switching (te) of the transistor of the rectifier stage and of a second instant of switching (ts) of the transistor of the inverter stage (2), the first control signal (Ce), the second control signal (Cs), the first instant of switching a

Abstract: The invention relates to a method for detecting a defect on the DC power supply bus of a power converter connected to an electrical distribution network (RD). The method comprises steps of: determination of a mean value ( V) of the voltage (Vbus) of the DC power supply bus of the converter, determination of the ripple ({tilde over (V)}ppH1) of the voltage (Vbus) of the DC power supply bus, monitoring of the variation of the said mean value ( V) with respect to the said ripple ({tilde over (V)}ppH1), determination of a defect on the DC power supply bus as a function of the rate of the said variation, the said defect consisting of an anomaly on the inductor (L1) of the DC power supply bus, a power overload of the power converter, or advanced wear of the bus capacitor (Cbus).

Abstract: The invention relates to a method of control implemented in a variable speed drive, said method comprising the following steps of: for a switching of a transistor (100) of the rectifier stage (1), determination of a first control signal (Ce) corresponding to a first gate current (Ige) to be applied to the gate of the transistor to be switched so as to act on the rate of the variation of a first voltage (Vrec) generated by the switching, for a switching of a transistor (200) of the inverter stage (2), determination of a second control signal (Cs) corresponding to a second gate current to be applied to the gate of the transistor to be switched so as to act on the rate of the variation of a second voltage (Vine) generated by the switching, determination of a first instant of switching (te) of the transistor of the rectifier stage and of a second instant of switching (ts) of the transistor of the inverter stage (2), the first control signal (Ce), the second control signal (Cs), the first instant of switching a

Abstract: The invention relates to a differential mode and common mode choke comprising: a ferromagnetic core comprising three branches (1, 2, 3) extending between a bottom part (5) and a top part (4), a first coil (b1) wound around the first lateral branch (1), a second coil (b3) wound around the second lateral branch (3), the first lateral branch (1) being separated from the top part (4) by a first air gap (e1) and from the bottom part (5) by a second air gap (e10), the second lateral branch (3) being separated from the top part (4) by a first air gap (e3) and from the bottom part (5) by a second air gap (e30), the central branch (2) being separated from the top part (4) by a first air gap (e2) and from the bottom part (5) by a second air gap (e20).

Abstract: The invention relates to a method for detecting a defect on the DC power supply bus of a power converter connected to an electrical distribution network (RD). The method comprises steps of: determination of a mean value ( V) of the voltage (Vbus) of the DC power supply bus of the converter, determination of the ripple ({tilde over (V)}ppH1) of the voltage (Vbus) of the DC power supply bus, monitoring of the variation of the said mean value ( V) with respect to the said ripple ({tilde over (V)}ppH1), determination of a defect on the DC power supply bus as a function of the rate of the said variation, the said defect consisting of an anomaly on the inductor (L1) of the DC power supply bus, a power overload of the power converter, or advanced wear of the bus capacitor (Cbus).