Abstract
AbstractThe authors have proposed the resin molded type of voltage–current sensor for the real‐time observation of the power factor. The sensor has been designed and implemented based on the FEM; however, the current waveform and practical power distribution system includes harmonic components due to the inverter‐fed power apparatuses in households and factories. Therefore, it is necessary to apply not the conventional jω method but the finite‐difference approximation to the time derivative term in a transient electromagnetic field analysis using FEM. In the paper, the authors will show the result of electromagnetic field analysis of the sensor adopting the finite‐difference approximation. © 2006 Wiley Periodicals, Inc. Electr Eng Jpn, 157(1): 1–9, 2006; Published online in Wiley InterScience (http://www.interscience.wiley.com). DOI 10.1002/eej.20294
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