| 摘要 |
A method of reconstruction of a fault-reduced voltage signal corresponding in frequency, amplitude and phase position to a sinusoidal input voltage fault-prone in frequency, amplitude and/or phase position is provided. The input voltage is fed to a first band-pass filter including an adjustable resonant frequency and amplification, the output voltage being the fault-reduced voltage signal. A controlled variable is determined for a first controller by determining the scanned differential voltage of the output voltage and the input voltage in zero points of the output voltage, the controller adjusting the resonate frequency of the first band-pass filter such that the differential voltage in the zero points disappears. A controlled variable is determined for a second controller by determining the scanned differential voltage of the output voltage and the input voltage in vertexes of the output voltage, the second controller controlling the amplification of the first band-pass filter such that the differential voltage in the vertexes disappears.
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