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Control design of grid-connected three-phase inverters for voltage unbalance correction

Bart Meersman (UGent) , Bert Renders (UGent) , Lieven Degroote (UGent) , Tine Vandoorn (UGent) and Lieven Vandevelde (UGent)
Author
Organization
Abstract
The increasing presence of single-phase distributed generators and unbalanced loads in the electric power system may lead to unbalance of the three-phase voltages, resulting in increased losses and heating effects. A type of voltage unbalance with a high probability in (low voltage) distribution networks is the unequal voltage magnitudes at the fundamental system frequency (under- and over-voltages). To decrease this voltage unbalance problem three-phase four-wire inverter-connected distribution units can be used. This paper proposes a control method for a three-phase four-wire inverter for Distributed Generation (DG) units which has a resistive behaviour for disturbances. The effect of the proposed control method on the voltage unbalance in the distribution network is simulated and is compared to the classical sinusoidal control strategy. The simulation results show the positive effect of the proposed control strategy on voltage unbalance.
Keywords
DISTRIBUTED GENERATION UNITS, NEUTRAL CONDUCTOR CURRENT, resistive behaviour, voltage unbalance, distributed generation, neutral-point-clamped VSI, three-phase voltage-source inverter (VSI)

Citation

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Chicago
Meersman, Bart, Bert Renders, Lieven Degroote, Tine Vandoorn, and Lieven Vandevelde. 2009. “Control Design of Grid-connected Three-phase Inverters for Voltage Unbalance Correction.” In UPEC: 2009 44TH INTERNATIONAL UNIVERSITIES POWER ENGINEERING CONFERENCE, 591–595. New York, NY, USA: IEEE.
APA
Meersman, B., Renders, B., Degroote, L., Vandoorn, T., & Vandevelde, L. (2009). Control design of grid-connected three-phase inverters for voltage unbalance correction. UPEC: 2009 44TH INTERNATIONAL UNIVERSITIES POWER ENGINEERING CONFERENCE (pp. 591–595). Presented at the 44th International Universities Power Engineering Conference (UPEC 2009), New York, NY, USA: IEEE.
Vancouver
1.
Meersman B, Renders B, Degroote L, Vandoorn T, Vandevelde L. Control design of grid-connected three-phase inverters for voltage unbalance correction. UPEC: 2009 44TH INTERNATIONAL UNIVERSITIES POWER ENGINEERING CONFERENCE. New York, NY, USA: IEEE; 2009. p. 591–5.
MLA
Meersman, Bart, Bert Renders, Lieven Degroote, et al. “Control Design of Grid-connected Three-phase Inverters for Voltage Unbalance Correction.” UPEC: 2009 44TH INTERNATIONAL UNIVERSITIES POWER ENGINEERING CONFERENCE. New York, NY, USA: IEEE, 2009. 591–595. Print.
@inproceedings{768881,
  abstract     = {The increasing presence of single-phase distributed generators and unbalanced loads in the electric power system may lead to unbalance of the three-phase voltages, resulting in increased losses and heating effects. A type of voltage unbalance with a high probability in (low voltage) distribution networks is the unequal voltage magnitudes at the fundamental system frequency (under- and over-voltages). To decrease this voltage unbalance problem three-phase four-wire inverter-connected distribution units can be used. This paper proposes a control method for a three-phase four-wire inverter for Distributed Generation (DG) units which has a resistive behaviour for disturbances. The effect of the proposed control method on the voltage unbalance in the distribution network is simulated and is compared to the classical sinusoidal control strategy. The simulation results show the positive effect of the proposed control strategy on voltage unbalance.},
  author       = {Meersman, Bart and Renders, Bert and Degroote, Lieven and Vandoorn, Tine and Vandevelde, Lieven},
  booktitle    = {UPEC: 2009 44TH INTERNATIONAL UNIVERSITIES POWER ENGINEERING CONFERENCE},
  isbn         = {9781424468232},
  keyword      = {DISTRIBUTED GENERATION UNITS,NEUTRAL CONDUCTOR CURRENT,resistive behaviour,voltage unbalance,distributed generation,neutral-point-clamped VSI,three-phase voltage-source inverter (VSI)},
  language     = {eng},
  location     = {Glasgow, Scotland, UK},
  pages        = {591--595},
  publisher    = {IEEE},
  title        = {Control design of grid-connected three-phase inverters for voltage unbalance correction},
  year         = {2009},
}

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