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.