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Measurements of High-Frequency (2–150 kHz) Distortion in Low-Voltage Networks

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5 Author(s)
Larsson, E.O.A. ; Skelleftea Dept., Lulea Univ. of Technol., Skelleftea, Sweden ; Bollen, M.H.J. ; Wahlberg, M.G. ; Lundmark, C.M.
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This paper presents different methods to describe voltage and current distortion in the frequency range 2 to 150 kHz. The time-frequency domain was shown to give additional information next to the time- and frequency-domain representations. Measurements of different devices and at different locations showed remnants of the switching frequency of the power electronics as well as lower frequency oscillations around the current zero crossing to be present in voltage and current. The voltage distortion is shown to vary a lot during the day and between locations.

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Power Delivery, IEEE Transactions on  (Volume:25 ,  Issue: 3 )