Neutral-Point Voltage Balancing Control of Active NPC Converter for the High-Power Flywheel Energy Storage System

Junliang Chen; Zeming Zeng; Congzhe Gao; Dahui Zhang; Ziwei Wang

doi:10.1109/ICEMS59686.2023.10344994

Neutral-Point Voltage Balancing Control of Active NPC Converter for the High-Power Flywheel Energy Storage System

Junliang Chen^*
, Zeming Zeng
, Congzhe Gao
, Dahui Zhang
, Ziwei Wang

^*Corresponding author for this work

School of Automation

Beijing Institute of Technology

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

2 Citations (Scopus)

Abstract

Renewable energy is connected to the grid on a large scale, and the frequency stability of the grid is reduced. The high-power flywheel energy storage system (FESS) can reduce the power fluctuation of renewable energy and improve the frequency stability of power grid. The three-level (3L) active neutral point clamped (ANPC) voltage-source converter is widely used in high-power medium-voltage applications. But, the neutral point (NP) voltage unbalance has always been a disadvantage of this topology. This paper analyzes the principle of the back-to-back ANPC converter in the high-power flywheel energy storage system, studied the NP voltage fluctuation problem of the back-to-back ANPC converter. Then aiming at the problem of the NP voltage fluctuation, an algorithm based on small vector coefficient adjustment of capacitor voltage difference is designed. Finally, the effectiveness of the NP voltage balancing algorithm is verified in the simulation and experiments.

Original language	English
Title of host publication	2023 26th International Conference on Electrical Machines and Systems, ICEMS 2023
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	4743-4748
Number of pages	6
ISBN (Electronic)	9798350317589
DOIs	https://doi.org/10.1109/ICEMS59686.2023.10344994
Publication status	Published - 2023
Event	26th International Conference on Electrical Machines and Systems, ICEMS 2023 - Zhuhai, China Duration: 5 Nov 2023 → 8 Nov 2023

Publication series

Name	2023 26th International Conference on Electrical Machines and Systems, ICEMS 2023

Conference

Conference	26th International Conference on Electrical Machines and Systems, ICEMS 2023
Country/Territory	China
City	Zhuhai
Period	5/11/23 → 8/11/23

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

active neutral point clamped converter(ANPC)
flywheel energy storage system
neutral point voltage control

Access to Document

10.1109/ICEMS59686.2023.10344994

Cite this

Chen, J., Zeng, Z., Gao, C., Zhang, D., & Wang, Z. (2023). Neutral-Point Voltage Balancing Control of Active NPC Converter for the High-Power Flywheel Energy Storage System. In 2023 26th International Conference on Electrical Machines and Systems, ICEMS 2023 (pp. 4743-4748). (2023 26th International Conference on Electrical Machines and Systems, ICEMS 2023). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICEMS59686.2023.10344994

Chen, Junliang ; Zeng, Zeming ; Gao, Congzhe et al. / Neutral-Point Voltage Balancing Control of Active NPC Converter for the High-Power Flywheel Energy Storage System. 2023 26th International Conference on Electrical Machines and Systems, ICEMS 2023. Institute of Electrical and Electronics Engineers Inc., 2023. pp. 4743-4748 (2023 26th International Conference on Electrical Machines and Systems, ICEMS 2023).

@inproceedings{759c4d69f145477987c30e944e8a4884,

title = "Neutral-Point Voltage Balancing Control of Active NPC Converter for the High-Power Flywheel Energy Storage System",

abstract = "Renewable energy is connected to the grid on a large scale, and the frequency stability of the grid is reduced. The high-power flywheel energy storage system (FESS) can reduce the power fluctuation of renewable energy and improve the frequency stability of power grid. The three-level (3L) active neutral point clamped (ANPC) voltage-source converter is widely used in high-power medium-voltage applications. But, the neutral point (NP) voltage unbalance has always been a disadvantage of this topology. This paper analyzes the principle of the back-to-back ANPC converter in the high-power flywheel energy storage system, studied the NP voltage fluctuation problem of the back-to-back ANPC converter. Then aiming at the problem of the NP voltage fluctuation, an algorithm based on small vector coefficient adjustment of capacitor voltage difference is designed. Finally, the effectiveness of the NP voltage balancing algorithm is verified in the simulation and experiments.",

keywords = "active neutral point clamped converter(ANPC), flywheel energy storage system, neutral point voltage control",

author = "Junliang Chen and Zeming Zeng and Congzhe Gao and Dahui Zhang and Ziwei Wang",

note = "Publisher Copyright: {\textcopyright} 2023 IEEE.; 26th International Conference on Electrical Machines and Systems, ICEMS 2023 ; Conference date: 05-11-2023 Through 08-11-2023",

year = "2023",

doi = "10.1109/ICEMS59686.2023.10344994",

language = "English",

series = "2023 26th International Conference on Electrical Machines and Systems, ICEMS 2023",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "4743--4748",

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address = "United States",

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Chen, J, Zeng, Z, Gao, C, Zhang, D & Wang, Z 2023, Neutral-Point Voltage Balancing Control of Active NPC Converter for the High-Power Flywheel Energy Storage System. in 2023 26th International Conference on Electrical Machines and Systems, ICEMS 2023. 2023 26th International Conference on Electrical Machines and Systems, ICEMS 2023, Institute of Electrical and Electronics Engineers Inc., pp. 4743-4748, 26th International Conference on Electrical Machines and Systems, ICEMS 2023, Zhuhai, China, 5/11/23. https://doi.org/10.1109/ICEMS59686.2023.10344994

Neutral-Point Voltage Balancing Control of Active NPC Converter for the High-Power Flywheel Energy Storage System. / Chen, Junliang; Zeng, Zeming; Gao, Congzhe et al.
2023 26th International Conference on Electrical Machines and Systems, ICEMS 2023. Institute of Electrical and Electronics Engineers Inc., 2023. p. 4743-4748 (2023 26th International Conference on Electrical Machines and Systems, ICEMS 2023).

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

TY - GEN

T1 - Neutral-Point Voltage Balancing Control of Active NPC Converter for the High-Power Flywheel Energy Storage System

AU - Chen, Junliang

AU - Zeng, Zeming

AU - Gao, Congzhe

AU - Zhang, Dahui

AU - Wang, Ziwei

PY - 2023

Y1 - 2023

N2 - Renewable energy is connected to the grid on a large scale, and the frequency stability of the grid is reduced. The high-power flywheel energy storage system (FESS) can reduce the power fluctuation of renewable energy and improve the frequency stability of power grid. The three-level (3L) active neutral point clamped (ANPC) voltage-source converter is widely used in high-power medium-voltage applications. But, the neutral point (NP) voltage unbalance has always been a disadvantage of this topology. This paper analyzes the principle of the back-to-back ANPC converter in the high-power flywheel energy storage system, studied the NP voltage fluctuation problem of the back-to-back ANPC converter. Then aiming at the problem of the NP voltage fluctuation, an algorithm based on small vector coefficient adjustment of capacitor voltage difference is designed. Finally, the effectiveness of the NP voltage balancing algorithm is verified in the simulation and experiments.

AB - Renewable energy is connected to the grid on a large scale, and the frequency stability of the grid is reduced. The high-power flywheel energy storage system (FESS) can reduce the power fluctuation of renewable energy and improve the frequency stability of power grid. The three-level (3L) active neutral point clamped (ANPC) voltage-source converter is widely used in high-power medium-voltage applications. But, the neutral point (NP) voltage unbalance has always been a disadvantage of this topology. This paper analyzes the principle of the back-to-back ANPC converter in the high-power flywheel energy storage system, studied the NP voltage fluctuation problem of the back-to-back ANPC converter. Then aiming at the problem of the NP voltage fluctuation, an algorithm based on small vector coefficient adjustment of capacitor voltage difference is designed. Finally, the effectiveness of the NP voltage balancing algorithm is verified in the simulation and experiments.

KW - active neutral point clamped converter(ANPC)

KW - flywheel energy storage system

KW - neutral point voltage control

UR - https://www.scopus.com/pages/publications/85182319835

U2 - 10.1109/ICEMS59686.2023.10344994

DO - 10.1109/ICEMS59686.2023.10344994

M3 - Conference contribution

AN - SCOPUS:85182319835

T3 - 2023 26th International Conference on Electrical Machines and Systems, ICEMS 2023

SP - 4743

EP - 4748

BT - 2023 26th International Conference on Electrical Machines and Systems, ICEMS 2023

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 26th International Conference on Electrical Machines and Systems, ICEMS 2023

Y2 - 5 November 2023 through 8 November 2023

ER -

Chen J, Zeng Z, Gao C, Zhang D, Wang Z. Neutral-Point Voltage Balancing Control of Active NPC Converter for the High-Power Flywheel Energy Storage System. In 2023 26th International Conference on Electrical Machines and Systems, ICEMS 2023. Institute of Electrical and Electronics Engineers Inc. 2023. p. 4743-4748. (2023 26th International Conference on Electrical Machines and Systems, ICEMS 2023). doi: 10.1109/ICEMS59686.2023.10344994

Neutral-Point Voltage Balancing Control of Active NPC Converter for the High-Power Flywheel Energy Storage System

Abstract

Publication series

Conference

UN SDGs

Keywords

Access to Document

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