An active‐support control strategy for multi‐winding medium‐frequency power electronics transformer for renewable generation

• DOI: 10.1049/rpg2.13196
• Publication Date: 2025-01-22T11:47:34Z
• Authors: Xuejiao Li; Jiawei Man; Mingyan Wang; Bingda Zhu; Chuang Liu

AbstractA high proportion of renewable energy is connected to the current power grid through power electronics interface devices, which makes the power system to have the low‐inertia dynamic characteristics. In order to improve the inertial response and voltage supporting capability, this article proposes a third‐order model of the synchronous generator based active support control strategy for the power electronics transformer (PET) based on a single multi‐winding medium‐frequency transformer (MWMFT) and AC choppers (ACCs) for renewable generation. First, the structure of the multi‐winding medium‐frequency power electronics transformer (MWMFPET) is introduced. Second, the average model of the MWMFPET is especially established through two modulation ratios. Third, the active support control strategy for this PET has been elaborated in detail. Finally, the simulation results verify the feasibility and effectiveness of the proposed control strategy for the MWMFPET.