Abstract: A method for determining a direct inductance and a quadrature inductance of an electrical machine is included. The method includes controlling the electrical machine so that a stator generates a first magnetic field rotating at a first rotation frequency to rotationally drive a rotor of the electrical machine, and a second magnetic field that varies periodically at a second frequency for measuring a portion of the phase currents flowing through the stator windings of the electrical machine during controlling of the electrical machine. The method further includes determining an amplitude spectrum of a given electrical quantity determined based on a portion of the phase currents, searching in the amplitude spectrum for a peak present at a frequency that is dependent on the second frequency, determining an amplitude of each peak found, and determining the direct inductance and the quadrature inductance from the amplitudes of two peaks found.

Abstract: This method for determining a direct-axis inductance (Ld) and a quadrature-axis inductance (Lq) of an electric machine (102) includes: at least one testing step including: controlling the electric machine (102) so that a stator (106) of the electric machine (102) generates a magnetic field including a magnetic field that rotates at a rotation frequency so as to make a rotor (104) of the electric machine (102) rotate, and a test magnetic field that varies periodically at a test frequency; measuring the phase currents ([i]) that flow through the stator phase windings (A, B, C) of the electric machine (102) during the control of the electric machine (102); determining an amplitude spectrum (S) of an electrical quantity determined on the basis of at least some of the phase currents ([i]); searching, in the amplitude spectrum (S), for at least one peak present at a frequency that is dependent on the test frequency; determining an amplitude (Ipul, Irot) of each peak found; and determining the direct-axis inductance

Abstract: The invention relates to a method for discharging at least one capacitor (2) of an electric circuit (1), said electric circuit (1) also comprising: an electric stator winding (4) of a polyphase rotary electric machine, said winding (4) comprising a plurality of coils (6) which each form a stator phase and which are not being coupled to one another; and a switching system (5) disposed between the capacitor (2) and the electric stator winding (4) and comprising a plurality of controllable switching cells (10). According to the method of the invention, the coils (6) are electrically powered by the capacitor (2) by means of the switching system (5), of which the switching cells (10) are controlled such that the homopolar electric current passes through the electric stator winding (4).

Abstract: The rotary drive system includes: a direct voltage source (102); an electric motor (104) having an axis of rotation (A), and including independent phases having directions about the axis of rotation; an inverter (106) for connecting each phase to the direct voltage source (102); and a control device (110) for supplying a command to the inverter (106). The control device includes: elements (118) for selecting a formula from predefined formulas, each predefined formula being intended to calculate either a homopolar voltage set-point, or a homopolar current set-point; elements (124) for determining a set-point intended to apply the selected formula to determine, according to the formula selected, either a homopolar voltage set-point, or a homopolar current set-point, and elements (126) for determining a command intended to determine the command of the inverter (106) based on the set-point determined.

Abstract: Method of configuring a rotating electric machine (1) stator (2), comprising the following steps: employing a stator (2) having a carcass (5) on which electrical conductors are coiled so as to form N coils (6j), N being greater than or equal to four and, electrically connecting the coils (6j) to an electrical power supply device (7) in such a way that each coil (6j) is traversed by a specific electric current (ij) delivered by the electrical power supply device (7), the connection of the stator (2) to the electrical power supply device (7) being performed in such a way that as one progresses around the axis (X) of the stator away from a reference coil (61), the phase shift between the current (i1) traversing the said reference coil and the current (ij) traversing each of the other coils (6j) and specific to the latter varies in a strictly monotonic manner as one progresses.

Abstract: The invention relates to a method for discharging at least one capacitor (2) of an electric circuit (1), said electric circuit (1) also comprising: an electric stator winding (4) of a polyphase rotary electric machine, said winding (4) comprising a plurality of coils (6) which each form a stator phase and which are not being coupled to one another; and a switching system (5) disposed between the capacitor (2) and the electric stator winding (4) and comprising a plurality of controllable switching cells (10). According to the method of the invention, the coils (6) are electrically powered by the capacitor (2) by means of the switching system (5), of which the switching cells (10) are controlled such that the homopolar electric current passes through the electric stator winding (4).

Abstract: The rotary drive system includes: a direct voltage source (102); an electric motor (104) having an axis of rotation (A), and including independent phases having directions about the axis of rotation; an inverter (106) for connecting each phase to the direct voltage source (102); and a control device (110) for supplying a command to the inverter (106). The control device includes: elements (118) for selecting a formula from predefined formulas, each predefined formula being intended to calculate either a homopolar voltage set-point, or a homopolar current set-point; elements (124) for determining a set-point intended to apply the selected formula to determine, according to the formula selected, either a homopolar voltage set-point, or a homopolar current set-point, and elements (126) for determining a command intended to determine the command of the inverter (106) based on the set-point determined.

Abstract: Method of configuring a rotating electric machine (1) stator (2), comprising the following steps: employing a stator (2) having a carcass (5) on which electrical conductors are coiled so as to form N coils (6j), N being greater than or equal to four and, electrically connecting the coils (6j) to an electrical power supply device (7) in such a way that each coil (6j) is traversed by a specific electric current (ij) delivered by the electrical power supply device (7), the connection of the stator (2) to the electrical power supply device (7) being performed in such a way that as one progresses around the axis (X) of the stator away from a reference coil (61), the phase shift between the current (i1) traversing the said reference coil and the current (ij) traversing each of the other coils (6j) and specific to the latter varies in a strictly monotonic manner as one progresses.