STABILIZING DC LINK VOLTAGE WITH ADAPTIVE GAIN

A method for stabilizing a DC link voltage of an electrical converter (12), the method comprising: determining a DC link voltage signal (30) for the DC link voltage of the electrical converter (12); determining a fluctuation signal (50) of the DC link voltage by applying a high pass filter (46, 48) to the DC link voltage signal (30); determining a torque offset (40) by multiplying the fluctuation signal (50) with a gain value (54); and modifying a reference torque with the torque offset (40) for controlling the electrical converter (12). The gain value (54) is adjusted by: determining a DC link voltage ripple (62) from the DC link voltage signal (30); and comparing the DC link voltage ripple (62) with a threshold and, when the DC link voltage ripple is higher than the threshold, increasing the gain value (54).