Probabilistic modeling of current harmonics produced by an AC/DC converter under voltage unbalance

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/61.248322· OSTI ID:5385037

Wang, Yawjuen ^[1]; Pierrat, L ^[2]

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1. Domaine Univ., St. Martin d'Heres (France). Grenoble Electrotechnical Lab.
2. Electricite de France, Grenoble (France). General Technic Div.

Harmonic currents generated by an ac/dc converter are subject to random variations due partly to fluctuation of the converter's dc load and partly to power source disturbances. The latters are also responsible for the generation of uncharacteristic harmonics. Based on an analytical converter model and probabilistic models of voltage unbalance and converter load variations, the random behavior of both characteristics and uncharacteristic harmonics produced by a six-pulse ac/dc converter under voltage unbalance is analyzed. The probability density functions of the magnitude and the phase angle of harmonic currents are derived and compared with the results obtained from Monte Carlo simulations. It is found that the developed probabilistic harmonic model agrees very well with the results of Monte Carlo simulations and gives significant insight into the effects of voltage unbalance and converter dc load variations upon the random properties of the converter current spectrum.

• OSTI ID: 5385037
• Journal Information: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States) Vol. 8:4; ISSN 0885-8977; ISSN ITPDE5
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240200* -- Power System Networks
Transmission & Distribution-- (1990-)
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HARMONICS
INSTABILITY
MATHEMATICAL MODELS
OSCILLATIONS
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RECTIFIERS