| Stability analysis of photovoltaic DC microgrid based on virtual inertia control |
| 投稿时间：2023-05-27 修订日期：2023-07-29 |
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| English Abstract: |
| Under the goal of “double carbon”,DC microgrid show low inertia characteristics, which adversely affects the stable operation of the system. A negative feedback model based on the bus node conductor network is established, and its equivalent open-loop function is used to analyze the system stability. Aiming at the lack of system stability margin, it is proposed to introduce the virtual inertia control into the photovoltaic unit, which realizes the smooth output of bus voltage under the situation of large light intensity varia-tion. Theoretical analysis and experimental results show that the proposed control method is effective in suppressing the bus voltage fluctuation on the basis of ensuring the photovoltaic utilization rate. |
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| English and key words:DC microgrid bus node conduction network small disturbance stability virtual inertia control |
| 基金项目:国家自然科学基金资助项目(52177184)；上海市 2021年度“科技创新行动计划”科技支撑碳达峰碳中和专项(第一批)(21DZ1207502) |
| DOI：10.16081/j.epae.202308013 |
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