Phase angle correction method for current transducer has successive digital momentary values compared to provide difference values multiplied with phase correction factor for providing correction values

摘要

The phase angle correction method has the measured parameter obtained from the secondary side of the transducer sampled for obtaining a sequence of sample values, converted via an analogue/digital converter into digital momentary values. Each of the latter is compared with the immediately preceding digital momentary value for providing a difference, multiplied with a phase correction factor for calculating a correction value, which is added to the momentary value for providing a corrected momentary value.