Implementation of independent improved neutral current controller using four leg PV-VSI

Fida Hasan Md Rafi; M. J. Hossain; Md Shamiur Rahman; J. Lu

doi:10.1109/AUPEC.2016.7749375

Implementation of independent improved neutral current controller using four leg PV-VSI

Fida Hasan Md Rafi, M. J. Hossain, Md Shamiur Rahman, J. Lu

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

3 Citations (Scopus)

Abstract

An independent improved neutral current controller is implemented in a three-phase (3p) four-wire (4w) low voltage (LV) distribution network with a four-leg voltage source inverter (VSI) and photovoltaic (PV) installations in this paper. The PV VSI is designed to control active power at unity power factor (p.f) with additional improvement in the neutral current controller using the load generated neutral current as a direct reference. As, inherently, most of the three-phase four-wire LV distribution networks exhibit voltage unbalance characteristics due to divergent load connection types such as single-and three-phase loads, the independent control over neutral current at the point of common coupling (PCC) becomes imperative especially for decentralized controllers. The improved performance of the neutral current controller both at customer's installation and at the distribution transformer (DT) terminal is investigated by implementing the designed PV-VSI with actual Australian (Energex) LV network model in PSCAD/EMTDC software environment. The performance of the designed four-leg VSI is compared with the traditional active neutral compensator with actual single phase customer loads. The results show that, with the proposed independent neutral current controller, improved neutral compensation can be achieved for unbalanced LV networks for whole day operations.

Original language	English
Title of host publication	Proceedings of the 2016 Australasian Universities Power Engineering Conference, AUPEC 2016
Place of Publication	Piscataway, NJ
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	1-6
Number of pages	6
ISBN (Electronic)	9781509014057
DOIs	https://doi.org/10.1109/AUPEC.2016.7749375
Publication status	Published - 18 Nov 2016
Externally published	Yes
Event	2016 Australasian Universities Power Engineering Conference, AUPEC 2016 - Brisbane, Australia Duration: 25 Sep 2016 → 28 Sep 2016

Other

Other	2016 Australasian Universities Power Engineering Conference, AUPEC 2016
Country	Australia
City	Brisbane
Period	25/09/16 → 28/09/16

Keywords

actual LV network
four-leg inverter
neutral current
unbalance loading
voltage unbalance

Access to Document

10.1109/AUPEC.2016.7749375

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Cite this

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title = "Implementation of independent improved neutral current controller using four leg PV-VSI",

abstract = "An independent improved neutral current controller is implemented in a three-phase (3p) four-wire (4w) low voltage (LV) distribution network with a four-leg voltage source inverter (VSI) and photovoltaic (PV) installations in this paper. The PV VSI is designed to control active power at unity power factor (p.f) with additional improvement in the neutral current controller using the load generated neutral current as a direct reference. As, inherently, most of the three-phase four-wire LV distribution networks exhibit voltage unbalance characteristics due to divergent load connection types such as single-and three-phase loads, the independent control over neutral current at the point of common coupling (PCC) becomes imperative especially for decentralized controllers. The improved performance of the neutral current controller both at customer's installation and at the distribution transformer (DT) terminal is investigated by implementing the designed PV-VSI with actual Australian (Energex) LV network model in PSCAD/EMTDC software environment. The performance of the designed four-leg VSI is compared with the traditional active neutral compensator with actual single phase customer loads. The results show that, with the proposed independent neutral current controller, improved neutral compensation can be achieved for unbalanced LV networks for whole day operations.",

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Rafi, FHM, Hossain, MJ, Rahman, MS & Lu, J 2016, Implementation of independent improved neutral current controller using four leg PV-VSI. in Proceedings of the 2016 Australasian Universities Power Engineering Conference, AUPEC 2016., 7749375, Institute of Electrical and Electronics Engineers (IEEE), Piscataway, NJ, pp. 1-6, 2016 Australasian Universities Power Engineering Conference, AUPEC 2016, Brisbane, Australia, 25/09/16. https://doi.org/10.1109/AUPEC.2016.7749375

Implementation of independent improved neutral current controller using four leg PV-VSI. / Rafi, Fida Hasan Md; Hossain, M. J.; Rahman, Md Shamiur; Lu, J.

Proceedings of the 2016 Australasian Universities Power Engineering Conference, AUPEC 2016. Piscataway, NJ : Institute of Electrical and Electronics Engineers (IEEE), 2016. p. 1-6 7749375.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

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