Abstract
In this paper, a PQ optimal control strategy based on second-order generalized integrator (SOGI) is proposed to suppress the AC component of three-phase asymmetric voltage on d and q axes. The relationship between three-phase asymmetrical voltage and their symmetrical positive and negative sequence voltages is analyzed. The system is optimally controlled by the PQ optimal control strategy (S-PQ) based on the second-order generalized integrator (SOGI). The simulation results verify the feasibility of the S-PQ control strategy. Compared with the traditional PQ control strategy, the S-PQ control strategy can effectively suppress the alternating current components on the d and q axis, reduce the harmonic content in the inverter output current and improve the quality of the grid input current.
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Ma, Y., Feng, Q., Huang, B., Wang, P. (2023). A New Control Strategy of Grid Connected Inverter Based on SOGI in Asymmetric Fault. In: Yang, Q., Li, J., **e, K., Hu, J. (eds) The Proceedings of the 17th Annual Conference of China Electrotechnical Society. ACCES 2022. Lecture Notes in Electrical Engineering, vol 1012. Springer, Singapore. https://doi.org/10.1007/978-981-99-0357-3_50
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DOI: https://doi.org/10.1007/978-981-99-0357-3_50
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