Modeling and Analysis of 2nd Harmonic Interaction for VSC with Transformer under Saturation Condition

Dongsheng Yang; Xiongfei Wang; Frede Blaabjerg; Yin Sun; Erik de Jong

doi:10.1109/PEAC.2018.8590604

Modeling and Analysis of 2nd Harmonic Interaction for VSC with Transformer under Saturation Condition

Dongsheng Yang, Xiongfei Wang, Frede Blaabjerg, Yin Sun, Erik de Jong

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

2 Citations (Scopus)

Abstract

This paper investigates the mechanism behind the 2nd harmonic interaction of a transformer connected Voltage-Source Converter (VSC) under saturation conditions. The detail small-signal models of a saturated transformer and a VSC are derived considering their nonlinear behavior. It is revealed that the frequency coupling from the saturated transformer and the PLL in the VSC may form a positive feedback loop and give rise to a 2nd harmonic amplification. The harmonic amplification gain is established herein, which provides an accurate assessment of the 2nd harmonic interaction. This theoretical analysis is verified by a power hardware in the loop laboratory experiment.

Original language	English
Title of host publication	2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)
Publisher	Institute of Electrical and Electronics Engineers
Pages	1-6
Number of pages	6
ISBN (Electronic)	978-1-5386-6054-6
DOIs	https://doi.org/10.1109/PEAC.2018.8590604
Publication status	Published - 27 Dec 2018
Externally published	Yes

Keywords

Harmonic interaction
PLL
VSC
frequency coupling
transformer core saturation

Access to Document

10.1109/PEAC.2018.8590604

Cite this

Yang, D., Wang, X., Blaabjerg, F., Sun, Y., & de Jong, E. (2018). Modeling and Analysis of 2nd Harmonic Interaction for VSC with Transformer under Saturation Condition. In 2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) (pp. 1-6). Article 8590604 Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/PEAC.2018.8590604

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abstract = "This paper investigates the mechanism behind the 2nd harmonic interaction of a transformer connected Voltage-Source Converter (VSC) under saturation conditions. The detail small-signal models of a saturated transformer and a VSC are derived considering their nonlinear behavior. It is revealed that the frequency coupling from the saturated transformer and the PLL in the VSC may form a positive feedback loop and give rise to a 2nd harmonic amplification. The harmonic amplification gain is established herein, which provides an accurate assessment of the 2nd harmonic interaction. This theoretical analysis is verified by a power hardware in the loop laboratory experiment.",

keywords = "Harmonic interaction, PLL, VSC, frequency coupling, transformer core saturation",

author = "Dongsheng Yang and Xiongfei Wang and Frede Blaabjerg and Yin Sun and {de Jong}, Erik",

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doi = "10.1109/PEAC.2018.8590604",

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Modeling and Analysis of 2nd Harmonic Interaction for VSC with Transformer under Saturation Condition. / Yang, Dongsheng; Wang, Xiongfei; Blaabjerg, Frede et al.
2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC). Institute of Electrical and Electronics Engineers, 2018. p. 1-6 8590604.

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

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AU - Sun, Yin

AU - de Jong, Erik

PY - 2018/12/27

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N2 - This paper investigates the mechanism behind the 2nd harmonic interaction of a transformer connected Voltage-Source Converter (VSC) under saturation conditions. The detail small-signal models of a saturated transformer and a VSC are derived considering their nonlinear behavior. It is revealed that the frequency coupling from the saturated transformer and the PLL in the VSC may form a positive feedback loop and give rise to a 2nd harmonic amplification. The harmonic amplification gain is established herein, which provides an accurate assessment of the 2nd harmonic interaction. This theoretical analysis is verified by a power hardware in the loop laboratory experiment.

AB - This paper investigates the mechanism behind the 2nd harmonic interaction of a transformer connected Voltage-Source Converter (VSC) under saturation conditions. The detail small-signal models of a saturated transformer and a VSC are derived considering their nonlinear behavior. It is revealed that the frequency coupling from the saturated transformer and the PLL in the VSC may form a positive feedback loop and give rise to a 2nd harmonic amplification. The harmonic amplification gain is established herein, which provides an accurate assessment of the 2nd harmonic interaction. This theoretical analysis is verified by a power hardware in the loop laboratory experiment.

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KW - PLL

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KW - transformer core saturation

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Modeling and Analysis of 2nd Harmonic Interaction for VSC with Transformer under Saturation Condition

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Keywords

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