MUMBAI, India, Aug. 1 -- Intellectual Property India has published a patent application (202411003362 A) filed by Schneider Electric India Private Limited, New Delhi, on Jan. 17, 2024, for 'system and method to achieve multi power factor direct current (dc) immunity in current transformers.'
Inventor(s) include G, Manjunatha B; and Patil, Mangesh P.
The application for the patent was published on Aug. 1, under issue no. 31/2025.
According to the abstract released by the Intellectual Property India: "Aspects of the present invention relates to compensating for phase shift due to multi power factor pulsating direct current (DC) in an energy meter. The present invention dynamically corrects for phase shift in an electronic energy meter by sensing current provided to the energy meter, obtaining a waveform of the sensed current, determining (1104) an offset of the DC component (if DC offset is present (1102)), and thereby determining (1106) a difference between the detected offset and the obtained current from the input power supply. The determined difference and the detected offset are used to generate (1108) a new waveform for the current and feeding the new waveform current to the meter and thereby compensates for the phase shift due to multi power factor pulsating direct current (DC) in an energy meter."
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