An enhanced dc-bus voltage control loop for single-phase grid-connected dc/ac converters

Seyedfoad Taghizadeh, M. Jahangir Hossain, Junwei Lu, Masoud Karimi-Ghartemani

Research output: Contribution to journalArticleResearchpeer-review

Abstract

This paper presents a method to enhance the dc-bus voltage control loop of a single-phase grid-connected dc/ac converter which improves its responses in terms of oscillation on its dc-bus voltage as well as its output ac current. Conventionally, the double-frequency (2-f) ripple is reduced by using a large electrolyte capacitor which increases the cost and size of the system. A state-of-the-art approach is to use a notch filter (NF) to block the 2-f ripple in the voltage control loop. This can significantly reduce the capacitor size. The existing presentations of this method, however, do not integrate the internal dynamics of the NF into consideration. This paper proposes a new way of implementing the NF which allows integration of its internal variables into the control loop. The resulted system exhibits enhanced transient responses at both the dc-bus voltage and the output ac current. The proposed method is analyzed in detail and its effectiveness is verified through simulations and experimental results.
LanguageEnglish
Pages5819-5829
Number of pages11
JournalIEEE Transactions on Power Electronics
Volume34
Issue number6
Early online date21 Aug 2018
DOIs
Publication statusPublished - Jun 2019

Fingerprint

Notch filters
Voltage control
Capacitors
Electric potential
Transient analysis
Electrolytes
Costs

Cite this

Taghizadeh, Seyedfoad ; Hossain, M. Jahangir ; Lu, Junwei ; Karimi-Ghartemani, Masoud. / An enhanced dc-bus voltage control loop for single-phase grid-connected dc/ac converters. In: IEEE Transactions on Power Electronics. 2019 ; Vol. 34, No. 6. pp. 5819-5829.
@article{4ab5473f169e414c9c37fa8681e2c624,
title = "An enhanced dc-bus voltage control loop for single-phase grid-connected dc/ac converters",
abstract = "This paper presents a method to enhance the dc-bus voltage control loop of a single-phase grid-connected dc/ac converter which improves its responses in terms of oscillation on its dc-bus voltage as well as its output ac current. Conventionally, the double-frequency (2-f) ripple is reduced by using a large electrolyte capacitor which increases the cost and size of the system. A state-of-the-art approach is to use a notch filter (NF) to block the 2-f ripple in the voltage control loop. This can significantly reduce the capacitor size. The existing presentations of this method, however, do not integrate the internal dynamics of the NF into consideration. This paper proposes a new way of implementing the NF which allows integration of its internal variables into the control loop. The resulted system exhibits enhanced transient responses at both the dc-bus voltage and the output ac current. The proposed method is analyzed in detail and its effectiveness is verified through simulations and experimental results.",
author = "Seyedfoad Taghizadeh and Hossain, {M. Jahangir} and Junwei Lu and Masoud Karimi-Ghartemani",
year = "2019",
month = "6",
doi = "10.1109/TPEL.2018.2866501",
language = "English",
volume = "34",
pages = "5819--5829",
journal = "IEEE Transactions on Power Electronics",
issn = "0885-8993",
publisher = "Institute of Electrical and Electronics Engineers (IEEE)",
number = "6",

}

An enhanced dc-bus voltage control loop for single-phase grid-connected dc/ac converters. / Taghizadeh, Seyedfoad; Hossain, M. Jahangir; Lu, Junwei; Karimi-Ghartemani, Masoud.

In: IEEE Transactions on Power Electronics, Vol. 34, No. 6, 06.2019, p. 5819-5829.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - An enhanced dc-bus voltage control loop for single-phase grid-connected dc/ac converters

AU - Taghizadeh, Seyedfoad

AU - Hossain, M. Jahangir

AU - Lu, Junwei

AU - Karimi-Ghartemani, Masoud

PY - 2019/6

Y1 - 2019/6

N2 - This paper presents a method to enhance the dc-bus voltage control loop of a single-phase grid-connected dc/ac converter which improves its responses in terms of oscillation on its dc-bus voltage as well as its output ac current. Conventionally, the double-frequency (2-f) ripple is reduced by using a large electrolyte capacitor which increases the cost and size of the system. A state-of-the-art approach is to use a notch filter (NF) to block the 2-f ripple in the voltage control loop. This can significantly reduce the capacitor size. The existing presentations of this method, however, do not integrate the internal dynamics of the NF into consideration. This paper proposes a new way of implementing the NF which allows integration of its internal variables into the control loop. The resulted system exhibits enhanced transient responses at both the dc-bus voltage and the output ac current. The proposed method is analyzed in detail and its effectiveness is verified through simulations and experimental results.

AB - This paper presents a method to enhance the dc-bus voltage control loop of a single-phase grid-connected dc/ac converter which improves its responses in terms of oscillation on its dc-bus voltage as well as its output ac current. Conventionally, the double-frequency (2-f) ripple is reduced by using a large electrolyte capacitor which increases the cost and size of the system. A state-of-the-art approach is to use a notch filter (NF) to block the 2-f ripple in the voltage control loop. This can significantly reduce the capacitor size. The existing presentations of this method, however, do not integrate the internal dynamics of the NF into consideration. This paper proposes a new way of implementing the NF which allows integration of its internal variables into the control loop. The resulted system exhibits enhanced transient responses at both the dc-bus voltage and the output ac current. The proposed method is analyzed in detail and its effectiveness is verified through simulations and experimental results.

UR - http://www.scopus.com/inward/record.url?scp=85052695819&partnerID=8YFLogxK

U2 - 10.1109/TPEL.2018.2866501

DO - 10.1109/TPEL.2018.2866501

M3 - Article

VL - 34

SP - 5819

EP - 5829

JO - IEEE Transactions on Power Electronics

T2 - IEEE Transactions on Power Electronics

JF - IEEE Transactions on Power Electronics

SN - 0885-8993

IS - 6

ER -