Method for Increasing Equivalent Damping in DC Voltage Synchronization Control Based on an Additional High-Pass Filter Forward Path
Grid-forming converters based on direct current (DC) voltage synchronization can stabilize the DC side voltage while achieving self-synchronization of the converter. However, traditional DC voltage synchronization(DVS) introduces issues with low-frequency oscillations. To investigate the mechanisms of these low-frequency oscillations, a small-signal model for DVS was developed. The analysis revealed that DVS control introduces a 180° phase lag, leading to low-frequency oscillation problems due to the system's loop gain. Based on this analysis, an improved DVS control method incorporating a high-pass filter in the forward path was presented to achieve damping control and oscillation suppression in the low-frequency range. In the end, the effects of the presented method was validated through simulations.
Authors
- Mingliang Mu
- Haozhi Qi (ORCID: https://orcid.org/0009-0002-5729-8031)
- Xiangcheng Meng (ORCID: https://orcid.org/0000-0001-5715-683X)
- Jun Zhang (ORCID: https://orcid.org/0000-0002-0523-5322)
- Zhihao Wang (ORCID: https://orcid.org/0000-0003-1989-3067)
- Yong Li (ORCID: https://orcid.org/0000-0001-8257-0223)
- Hongmei Gao (ORCID: https://orcid.org/0000-0002-1795-3380)
- Jiahe Xu (ORCID: https://orcid.org/0000-0003-3885-0070)
- Shuguang Song (ORCID: https://orcid.org/0000-0001-6238-2225)
Institutions
- Shandong University (CN)
- Shanghai Electric (China) (CN)
- Shandong Jianzhu University (CN)
Publication Details
- Published
- 2024-12-20
- DOI
- https://doi.org/10.1109/icpee64457.2024.10949998
- Primary Topic
- Power Systems and Renewable Energy
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- State Grid Shandong Electric Power Company