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. 2019 Feb 1;19(3):627. doi: 10.3390/s19030627

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Advanced views of voltage tab (1). (Top left): real-time harmonic content for voltage. (Bottom left): 24 h of power factor, total harmonic distortion voltage (THDv), and phase angle. (Right): phasor representation for voltage and current.