TY - GEN
T1 - Mitigating Twice the Fundamental Frequency Ripple in Three-Phase to Single-Phase Power Converters through Improved DC Link Voltage Control
AU - Carbone, Lorenzo
AU - Wang, Meiqi
AU - Baia, Gioele
AU - Peng, Qilin
AU - Watson, Alan J.
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - Single phase grid connected converters suffer from the well-known pulsation of power at twice the fundamental frequency. This ripple affects the current in the three-phase AC system through the DC link voltage control, leading to inefficiencies and potential reliability concerns. An improved DC link voltage control algorithm, based on the small signal approach, is proposed in this paper, in order to ensure constant input power on the three-phase side despite the pulsating single-phase output power. This algorithm theoretically eliminates the twice ripple effect on 3ϕ quantities, optimising harmonic content and system performance. Simulation results validate the effectiveness of the method, with experimental validation planned for a same scale power conversion system. These results will be detailed in an extended version of this paper. Compared to conventional solutions, this approach significantly improves three-phase side ripple mitigation, increasing the performance and reliability of the power conversion system without the need for additional equipment.
AB - Single phase grid connected converters suffer from the well-known pulsation of power at twice the fundamental frequency. This ripple affects the current in the three-phase AC system through the DC link voltage control, leading to inefficiencies and potential reliability concerns. An improved DC link voltage control algorithm, based on the small signal approach, is proposed in this paper, in order to ensure constant input power on the three-phase side despite the pulsating single-phase output power. This algorithm theoretically eliminates the twice ripple effect on 3ϕ quantities, optimising harmonic content and system performance. Simulation results validate the effectiveness of the method, with experimental validation planned for a same scale power conversion system. These results will be detailed in an extended version of this paper. Compared to conventional solutions, this approach significantly improves three-phase side ripple mitigation, increasing the performance and reliability of the power conversion system without the need for additional equipment.
KW - DC link voltage control
KW - Neutral Point Clamped
KW - Ripple mitigation
KW - Three-Phase to Single-Phase converter
KW - Twice Fundamental Frequency ripple
UR - http://www.scopus.com/inward/record.url?scp=105000930063&partnerID=8YFLogxK
U2 - 10.1109/IECON55916.2024.10905219
DO - 10.1109/IECON55916.2024.10905219
M3 - Conference contribution
AN - SCOPUS:105000930063
T3 - IECON Proceedings (Industrial Electronics Conference)
BT - IECON 2024 - 50th Annual Conference of the IEEE Industrial Electronics Society, Proceedings
PB - IEEE Computer Society
T2 - 50th Annual Conference of the IEEE Industrial Electronics Society, IECON 2024
Y2 - 3 November 2024 through 6 November 2024
ER -