Dynamic Analysis of Virtual Synchronous Generator Control-Based PMSG Considering Low-Voltage Ride-Through Control.
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| Title: | Dynamic Analysis of Virtual Synchronous Generator Control-Based PMSG Considering Low-Voltage Ride-Through Control. |
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| Authors: | Wang, Xiaobo1 (AUTHOR), Qiu, Chenguang2 (AUTHOR), Cui, Yu2,3 (AUTHOR), Zhou, Haiqiang1,3 (AUTHOR) js.hq@hhu.edu.cn, Wang, Yutong2,3 (AUTHOR) |
| Source: | Energies (19961073). May2026, Vol. 19 Issue 9, p2142. 21p. |
| Subject Terms: | *Permanent magnet generators, *Dynamic stability, *Synchronous generators, *Time-domain analysis, *Wind power plants, *Voltage |
| Abstract: | Virtual synchronous generator control-based permanent magnetic synchronous generators (VSG-PMSGs) have been widely used for their stable operation in a weak grid and strong voltage and frequency support capacity. However, VSG-PMSGs have complex and time-varying dynamics due to control strategy switching, current limiters, and saturations. Additionally, they are prone to transient angle instability during voltage faults. A dynamic analysis method for VSG-PMSGs considering low-voltage ride-through (LVRT) control is proposed in this paper. First, an improved LVRT control strategy based on active power reference reduction and virtual electromagnetic force (EMF) reset is introduced to mitigate the instability risk of VSG-PMSGs. Then, the mechanisms by which initial power and fault voltages influence the dynamic responses are revealed. The dynamics of VSG-PMSGs under different conditions are classified into four types according to the current and EMF limiters' state. To predict VSG-PMSG dynamics, we propose a method based on fault steady-state power flow for calculating the fault voltage. Using this approach, fault voltage dips in VSG-PMSGs within a wind farm are computed with an error of less than 0.002 p.u., and the dynamic behavior of each unit is accurately predicted within 10 s. To verify the validity of the proposed method, simulations were conducted across diverse scenarios. The results demonstrate that this method enables accurate and computationally efficient prediction of VSG-PMSG fault dynamics. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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| Abstract: | Virtual synchronous generator control-based permanent magnetic synchronous generators (VSG-PMSGs) have been widely used for their stable operation in a weak grid and strong voltage and frequency support capacity. However, VSG-PMSGs have complex and time-varying dynamics due to control strategy switching, current limiters, and saturations. Additionally, they are prone to transient angle instability during voltage faults. A dynamic analysis method for VSG-PMSGs considering low-voltage ride-through (LVRT) control is proposed in this paper. First, an improved LVRT control strategy based on active power reference reduction and virtual electromagnetic force (EMF) reset is introduced to mitigate the instability risk of VSG-PMSGs. Then, the mechanisms by which initial power and fault voltages influence the dynamic responses are revealed. The dynamics of VSG-PMSGs under different conditions are classified into four types according to the current and EMF limiters' state. To predict VSG-PMSG dynamics, we propose a method based on fault steady-state power flow for calculating the fault voltage. Using this approach, fault voltage dips in VSG-PMSGs within a wind farm are computed with an error of less than 0.002 p.u., and the dynamic behavior of each unit is accurately predicted within 10 s. To verify the validity of the proposed method, simulations were conducted across diverse scenarios. The results demonstrate that this method enables accurate and computationally efficient prediction of VSG-PMSG fault dynamics. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 19961073 |
| DOI: | 10.3390/en19092142 |
