Open AccessDevelopment and Efficiency Test of a 3 MVA Four-port Power Electronic Transformer
Author(s) -
Long Luo,
Yaohua Li,
Zixin Li,
Cong Zhao
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2166/1/012006
Subject(s) - port (circuit theory) , transformer , power flow , electrical engineering , power (physics) , computer science , electronic engineering , engineering , voltage , electric power system , physics , quantum mechanics
The development of a 3 MVA four-port, i.e. 10 kV ac port, 380 V ac port, ±750 V dc port, and ±375 V dc port, power electronic transformer (PET) for an integrated energy system is described. For this four-port PET, the efficiency test is a complex problem as each port-to-port efficiencies should be tested. To solve this problem, this paper proposes a data fitting method using only the converter efficiency in each port. The experimental results show a high accuracy of the proposed testing method. The test results of this four-port PET are also analyzed and the efficiency under different power flow directions is explained.