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Reducing neutral-point voltage fluctuation in NPC three-level active power filters

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Reducing neutral-point voltage fluctuation in NPC three-level active power filters. / Qian, Peng; Ma, Xiandong; Liu, Guohai et al.
In: Electrical Engineering, Vol. 100, No. 2, 06.2018, p. 721-732.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Qian, P, Ma, X, Liu, G & Chen, Z 2018, 'Reducing neutral-point voltage fluctuation in NPC three-level active power filters', Electrical Engineering, vol. 100, no. 2, pp. 721-732. https://doi.org/10.1007/s00202-017-0538-y

APA

Vancouver

Qian P, Ma X, Liu G, Chen Z. Reducing neutral-point voltage fluctuation in NPC three-level active power filters. Electrical Engineering. 2018 Jun;100(2):721-732. Epub 2017 May 8. doi: 10.1007/s00202-017-0538-y

Author

Qian, Peng ; Ma, Xiandong ; Liu, Guohai et al. / Reducing neutral-point voltage fluctuation in NPC three-level active power filters. In: Electrical Engineering. 2018 ; Vol. 100, No. 2. pp. 721-732.

Bibtex

@article{9d567844cb844e9f8a78efa7c3bd7da1,
title = "Reducing neutral-point voltage fluctuation in NPC three-level active power filters",
abstract = "Shunt active power filters (SAPFs) have been widely used to improve power quality of the grid by mitigating harmonics injected from nonlinear loads. This paper presents a new method for improving the performance of SAPFs using neutral-point-clamped (NPC) three-level inverters. NPC three-level inverters often suffer excessive voltage fluctuations at the neutral-point of DC-link capacitors, which may damage switching devices and cause additional high harmonic distortion of the output voltage. In order to solve the problem, two compensating schemes are proposed to restrict voltage fluctuation in the inverters. The first is voltage dependent, adopting a voltage compensation method, while the second is current dependent, using a current compensation method. The paper describes the respective circuit architectures and principles of operation. Corresponding models are mathematically formulated and evaluated under typical balanced and unbalanced working load conditions. The results show that both schemes are able to alleviate considerably voltage oscillations and hence harmonic distortions, and the current-compensated NPC inverter outperforms the voltage-compensated NPC inverter. Consequently, it is shown that the proposed approaches are effective and feasible for improving power quality of the grid when connected to nonlinear loads.",
keywords = "Shunt active power filter , Three-level inverter , Neutral-point-clamped , DC-link, Voltage compensation, Current compensation",
author = "Peng Qian and Xiandong Ma and Guohai Liu and Zhaoling Chen",
note = "The final publication is available at Springer via http://dx.doi.org/10.1007/s00202-017-0538-y",
year = "2018",
month = jun,
doi = "10.1007/s00202-017-0538-y",
language = "English",
volume = "100",
pages = "721--732",
journal = "Electrical Engineering",
issn = "0948-7921",
publisher = "Springer",
number = "2",

}

RIS

TY - JOUR

T1 - Reducing neutral-point voltage fluctuation in NPC three-level active power filters

AU - Qian, Peng

AU - Ma, Xiandong

AU - Liu, Guohai

AU - Chen, Zhaoling

N1 - The final publication is available at Springer via http://dx.doi.org/10.1007/s00202-017-0538-y

PY - 2018/6

Y1 - 2018/6

N2 - Shunt active power filters (SAPFs) have been widely used to improve power quality of the grid by mitigating harmonics injected from nonlinear loads. This paper presents a new method for improving the performance of SAPFs using neutral-point-clamped (NPC) three-level inverters. NPC three-level inverters often suffer excessive voltage fluctuations at the neutral-point of DC-link capacitors, which may damage switching devices and cause additional high harmonic distortion of the output voltage. In order to solve the problem, two compensating schemes are proposed to restrict voltage fluctuation in the inverters. The first is voltage dependent, adopting a voltage compensation method, while the second is current dependent, using a current compensation method. The paper describes the respective circuit architectures and principles of operation. Corresponding models are mathematically formulated and evaluated under typical balanced and unbalanced working load conditions. The results show that both schemes are able to alleviate considerably voltage oscillations and hence harmonic distortions, and the current-compensated NPC inverter outperforms the voltage-compensated NPC inverter. Consequently, it is shown that the proposed approaches are effective and feasible for improving power quality of the grid when connected to nonlinear loads.

AB - Shunt active power filters (SAPFs) have been widely used to improve power quality of the grid by mitigating harmonics injected from nonlinear loads. This paper presents a new method for improving the performance of SAPFs using neutral-point-clamped (NPC) three-level inverters. NPC three-level inverters often suffer excessive voltage fluctuations at the neutral-point of DC-link capacitors, which may damage switching devices and cause additional high harmonic distortion of the output voltage. In order to solve the problem, two compensating schemes are proposed to restrict voltage fluctuation in the inverters. The first is voltage dependent, adopting a voltage compensation method, while the second is current dependent, using a current compensation method. The paper describes the respective circuit architectures and principles of operation. Corresponding models are mathematically formulated and evaluated under typical balanced and unbalanced working load conditions. The results show that both schemes are able to alleviate considerably voltage oscillations and hence harmonic distortions, and the current-compensated NPC inverter outperforms the voltage-compensated NPC inverter. Consequently, it is shown that the proposed approaches are effective and feasible for improving power quality of the grid when connected to nonlinear loads.

KW - Shunt active power filter

KW - Three-level inverter

KW - Neutral-point-clamped

KW - DC-link

KW - Voltage compensation

KW - Current compensation

U2 - 10.1007/s00202-017-0538-y

DO - 10.1007/s00202-017-0538-y

M3 - Journal article

VL - 100

SP - 721

EP - 732

JO - Electrical Engineering

JF - Electrical Engineering

SN - 0948-7921

IS - 2

ER -