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[3, 2017] 

Journal of Electrical Engineering, Vol 68, 3 (2017) 194-199 DOI: 10.1515/jee-2017-0028

The analysis of output voltage distortion of inverter for frequency lower than the nominal

Jacek Bartman

   The paper discussed the studies related to the output voltage distortion of frequency inverter depending on its frequency. The changes in the effective value of voltage, THD, harmonics and interharmonics were presented for three different frequencies, lower than 50Hz. Additionally, it was shown how these values change depending on measurement time, presenting waveforms cycle by cycle in graphs, averaged in 10 periods and averaged in 150 periods of the analyzed signal. The studies were conducted in the laboratory area equipped with power quality meter class A.

Keywords: signal distorion, harmonics, interharmonics, THD, RMS, norms


[full-paper]


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