Impedance-based analysis of grid-synchronization stability for three-phase paralleled converters

Bo Wen; Dong Dong; Dushan Boroyevich; Rolando Burgos; Paolo Mattavelli; Zhiyu Shen

doi:10.1109/TPEL.2015.2419712

Impedance-based analysis of grid-synchronization stability for three-phase paralleled converters

Bo Wen, Dong Dong, Dushan Boroyevich, Rolando Burgos, Paolo Mattavelli, Zhiyu Shen

Research output: Contribution to journal › Article › peer-review

Abstract

Grid synchronization stability issues and subsynchronous oscillations between synchronous generators exist in electrical power systems. Three-phase voltage-source converters (VSCs) are being installed more and more in the grid to improve efficiency or to utilize renewable energy sources. The same stability issues between VSCs are also reported and analyzed using a small-signal model of phase-locked loops (PLLs). This paper proposes a different impedance-based analysis method. The proposed method shows that synchronization instability in a VSC system is due to the negative incremental resistance behavior of grid-tied inverters' impedance when they are modeled in the d-q frame. System can be stabilized simply by changing the inverter's PLL design. Experimental results verify the analysis and the proposed method.

Original language	English
Pages (from-to)	26-38
Number of pages	13
Journal	IEEE Transactions on Power Electronics
Volume	31
Issue number	1
DOIs	https://doi.org/10.1109/TPEL.2015.2419712
Publication status	Published - 3 Apr 2015

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title = "Impedance-based analysis of grid-synchronization stability for three-phase paralleled converters",

abstract = "Grid synchronization stability issues and subsynchronous oscillations between synchronous generators exist in electrical power systems. Three-phase voltage-source converters (VSCs) are being installed more and more in the grid to improve efficiency or to utilize renewable energy sources. The same stability issues between VSCs are also reported and analyzed using a small-signal model of phase-locked loops (PLLs). This paper proposes a different impedance-based analysis method. The proposed method shows that synchronization instability in a VSC system is due to the negative incremental resistance behavior of grid-tied inverters' impedance when they are modeled in the d-q frame. System can be stabilized simply by changing the inverter's PLL design. Experimental results verify the analysis and the proposed method.",

author = "Bo Wen and Dong Dong and Dushan Boroyevich and Rolando Burgos and Paolo Mattavelli and Zhiyu Shen",

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AU - Wen, Bo

AU - Dong, Dong

AU - Boroyevich, Dushan

AU - Burgos, Rolando

AU - Mattavelli, Paolo

AU - Shen, Zhiyu

PY - 2015/4/3

Y1 - 2015/4/3

N2 - Grid synchronization stability issues and subsynchronous oscillations between synchronous generators exist in electrical power systems. Three-phase voltage-source converters (VSCs) are being installed more and more in the grid to improve efficiency or to utilize renewable energy sources. The same stability issues between VSCs are also reported and analyzed using a small-signal model of phase-locked loops (PLLs). This paper proposes a different impedance-based analysis method. The proposed method shows that synchronization instability in a VSC system is due to the negative incremental resistance behavior of grid-tied inverters' impedance when they are modeled in the d-q frame. System can be stabilized simply by changing the inverter's PLL design. Experimental results verify the analysis and the proposed method.

AB - Grid synchronization stability issues and subsynchronous oscillations between synchronous generators exist in electrical power systems. Three-phase voltage-source converters (VSCs) are being installed more and more in the grid to improve efficiency or to utilize renewable energy sources. The same stability issues between VSCs are also reported and analyzed using a small-signal model of phase-locked loops (PLLs). This paper proposes a different impedance-based analysis method. The proposed method shows that synchronization instability in a VSC system is due to the negative incremental resistance behavior of grid-tied inverters' impedance when they are modeled in the d-q frame. System can be stabilized simply by changing the inverter's PLL design. Experimental results verify the analysis and the proposed method.

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JO - IEEE Transactions on Power Electronics

JF - IEEE Transactions on Power Electronics

IS - 1

ER -

Impedance-based analysis of grid-synchronization stability for three-phase paralleled converters

Abstract

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