Details

Autor(en) / Beteiligte

• Wang, Jinhao
• Chang, Xiao
• Gao, Le
• Lei, Da
• Zhang, Dingbang
• Ding, Yingying

Titel

A Dual-Mode Grid-Connected Control Strategy for a Bidirectional Power Converter

Ist Teil von

• 2021 4th International Conference on Energy, Electrical and Power Engineering (CEEPE), 2021, p.266-272

Ort / Verlag

IEEE

Erscheinungsjahr

2021

Quelle

IEEE Xplore

Beschreibungen/Notizen

• At present, control strategies are designed for AC/DC hybrid microgrid grid-connected operation under the condition that AC distribution network is strong grid (ideal grid). However, with the access of high-density distributed power supply, the distribution network gradually presents the weak grid condition. In order to make the bidirectional power converter run stably in both strong and weak grid conditions, this paper proposes a two-mode control strategy in grid-connected mode based on short-circuit ratio identification, voltage source control, current source control and system inertia. Finally, the simulation results show the effectiveness of the proposed method.