Modified norm type stability criterion for cascade AC system

Liu Fangcheng; Liu Jinjun; Zhang Haodong; Xue Danhong; Hasan Saad Ul; Zhou Linyuan

doi:10.1109/ECCE.2013.6646735

Modified norm type stability criterion for cascade AC system

Liu Fangcheng, Liu Jinjun, Zhang Haodong, Xue Danhong, Hasan Saad Ul, Zhou Linyuan

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

8 Citations (Scopus)

Abstract

In cascade AC system, the interaction between converters and non-ideal source may cause instability issues, especially when the converters behave as constant power load. From the view of small signal model, the stability issues can be evaluated based on the relationship between the terminal impedance and admittance of sub-modules. Therefore, the stability criterion based on terminal impedance and admittance is effective way to estimate the stability of total system. The impedance/admittance-based stability criterions have been widely accepted in DC system. However, the stability criterion for DC system can't be applied to AC system directly due to the difference in complexity of system behavior. In this paper, a norm type stability criterion is proposed to analyze the stability issues in AC system. G norm and sum norm are employed and a modified method to reduce the conservatism is also proposed. Finally, the conservatism of different norm type criterion are evaluated and compared. The results show the proposed criterion is better than other criterions in practical application.

Original language	English
Title of host publication	2013 IEEE Energy Conversion Congress and Exposition
Place of Publication	Piscataway, NJ
Pages	442-447
Number of pages	6
ISBN (Electronic)	9781479903368
DOIs	https://doi.org/10.1109/ECCE.2013.6646735
Publication status	Published - 2013
Externally published	Yes
Event	5th Annual IEEE Energy Conversion Congress and Exhibition, ECCE 2013 - Denver, CO, United States Duration: 15 Sep 2013 → 19 Sep 2013

Other

Other	5th Annual IEEE Energy Conversion Congress and Exhibition, ECCE 2013
Country	United States
City	Denver, CO
Period	15/09/13 → 19/09/13

Access to Document

10.1109/ECCE.2013.6646735

Link to publication in Scopus

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Cite this

@inproceedings{d0c07f6d00e44eaab26fb0637e0dfc7d,

title = "Modified norm type stability criterion for cascade AC system",

abstract = "In cascade AC system, the interaction between converters and non-ideal source may cause instability issues, especially when the converters behave as constant power load. From the view of small signal model, the stability issues can be evaluated based on the relationship between the terminal impedance and admittance of sub-modules. Therefore, the stability criterion based on terminal impedance and admittance is effective way to estimate the stability of total system. The impedance/admittance-based stability criterions have been widely accepted in DC system. However, the stability criterion for DC system can't be applied to AC system directly due to the difference in complexity of system behavior. In this paper, a norm type stability criterion is proposed to analyze the stability issues in AC system. G norm and sum norm are employed and a modified method to reduce the conservatism is also proposed. Finally, the conservatism of different norm type criterion are evaluated and compared. The results show the proposed criterion is better than other criterions in practical application.",

author = "Liu Fangcheng and Liu Jinjun and Zhang Haodong and Xue Danhong and Ul, {Hasan Saad} and Zhou Linyuan",

year = "2013",

doi = "10.1109/ECCE.2013.6646735",

language = "English",

isbn = "9781479903351",

pages = "442--447",

booktitle = "2013 IEEE Energy Conversion Congress and Exposition",

}

Fangcheng, L, Jinjun, L, Haodong, Z, Danhong, X, Ul, HS & Linyuan, Z 2013, Modified norm type stability criterion for cascade AC system. in 2013 IEEE Energy Conversion Congress and Exposition., 6646735, Piscataway, NJ, pp. 442-447, 5th Annual IEEE Energy Conversion Congress and Exhibition, ECCE 2013, Denver, CO, United States, 15/09/13. https://doi.org/10.1109/ECCE.2013.6646735

TY - GEN

T1 - Modified norm type stability criterion for cascade AC system

AU - Fangcheng, Liu

AU - Jinjun, Liu

AU - Haodong, Zhang

AU - Danhong, Xue

AU - Ul, Hasan Saad

AU - Linyuan, Zhou

PY - 2013

Y1 - 2013

N2 - In cascade AC system, the interaction between converters and non-ideal source may cause instability issues, especially when the converters behave as constant power load. From the view of small signal model, the stability issues can be evaluated based on the relationship between the terminal impedance and admittance of sub-modules. Therefore, the stability criterion based on terminal impedance and admittance is effective way to estimate the stability of total system. The impedance/admittance-based stability criterions have been widely accepted in DC system. However, the stability criterion for DC system can't be applied to AC system directly due to the difference in complexity of system behavior. In this paper, a norm type stability criterion is proposed to analyze the stability issues in AC system. G norm and sum norm are employed and a modified method to reduce the conservatism is also proposed. Finally, the conservatism of different norm type criterion are evaluated and compared. The results show the proposed criterion is better than other criterions in practical application.

AB - In cascade AC system, the interaction between converters and non-ideal source may cause instability issues, especially when the converters behave as constant power load. From the view of small signal model, the stability issues can be evaluated based on the relationship between the terminal impedance and admittance of sub-modules. Therefore, the stability criterion based on terminal impedance and admittance is effective way to estimate the stability of total system. The impedance/admittance-based stability criterions have been widely accepted in DC system. However, the stability criterion for DC system can't be applied to AC system directly due to the difference in complexity of system behavior. In this paper, a norm type stability criterion is proposed to analyze the stability issues in AC system. G norm and sum norm are employed and a modified method to reduce the conservatism is also proposed. Finally, the conservatism of different norm type criterion are evaluated and compared. The results show the proposed criterion is better than other criterions in practical application.

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U2 - 10.1109/ECCE.2013.6646735

DO - 10.1109/ECCE.2013.6646735

M3 - Conference proceeding contribution

SN - 9781479903351

SP - 442

EP - 447

BT - 2013 IEEE Energy Conversion Congress and Exposition

CY - Piscataway, NJ

ER -