TY - GEN
T1 - Modeling of the Isolated Modular Multilevel DC-DC Converter by Considering the Magnetizing Inductance of the High-frequency Transformer
AU - Mehrabankhomartash, Mahmoud
AU - Yin, Shiyuan
AU - Saeedifard, Hossein
AU - Yazdani, Amirnaser
AU - Kandula, Rajendra Prasad
AU - Divan, Deepak
AU - Saeedifard, Maryam
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - With the rapid development of distributed energy resources, the Isolated Modular Multilevel DC-DC (IMM DC-DC) converter is becoming a promising solution for the interconnection of Medium Voltage (MV) and/or High Voltage (HV) DC grids. In this paper, the detailed mathematical model of the IMM DC-DC converter based on harmonic analysis is firstly established by considering the magnetizing inductance of the high-frequency transformer. Then, the real and reactive powers, transformer primary and secondary side currents, arm currents, and capacitor voltage ripples can be accurately determined. Due to the existence of the large arm inductance, the magnetizing inductance of the transformer is no longer negligible. Comparisons between the study results confirm that the magnetizing inductance has a significant impact on each of the aforementioned variables. The proposed analytical model can help achieve accurate sizing of the major components of the IMM DC-DC converter. The presented analysis is validated by both simulation in the Matlab/Simulink environment and experiment.
AB - With the rapid development of distributed energy resources, the Isolated Modular Multilevel DC-DC (IMM DC-DC) converter is becoming a promising solution for the interconnection of Medium Voltage (MV) and/or High Voltage (HV) DC grids. In this paper, the detailed mathematical model of the IMM DC-DC converter based on harmonic analysis is firstly established by considering the magnetizing inductance of the high-frequency transformer. Then, the real and reactive powers, transformer primary and secondary side currents, arm currents, and capacitor voltage ripples can be accurately determined. Due to the existence of the large arm inductance, the magnetizing inductance of the transformer is no longer negligible. Comparisons between the study results confirm that the magnetizing inductance has a significant impact on each of the aforementioned variables. The proposed analytical model can help achieve accurate sizing of the major components of the IMM DC-DC converter. The presented analysis is validated by both simulation in the Matlab/Simulink environment and experiment.
KW - DC Grids
KW - DC-DC Converter
KW - Modular Multilevel Converter
UR - http://www.scopus.com/inward/record.url?scp=85143897988&partnerID=8YFLogxK
U2 - 10.1109/IECON49645.2022.9968688
DO - 10.1109/IECON49645.2022.9968688
M3 - Conference contribution
AN - SCOPUS:85143897988
T3 - IECON Proceedings (Industrial Electronics Conference)
BT - IECON 2022 - 48th Annual Conference of the IEEE Industrial Electronics Society
PB - IEEE Computer Society
T2 - 48th Annual Conference of the IEEE Industrial Electronics Society, IECON 2022
Y2 - 17 October 2022 through 20 October 2022
ER -