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3-Phase Transformer Isolated Multi-level Inverter Using Common Arm  

Song, Sung-Geun (전남대 전기공학과)
Park, Sung-Jun (전남대 전기공학과)
Kim, Dong-Ok (전남대 전기공학과)
Lim, Young-Cheol (전남대 전기공학과)
Kim, Kwang-Heon (전남대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.12, no.2, 2007 , pp. 149-156 More about this Journal
Abstract
The number of transformer and the size of transformer in inverter using 3-phase transformer could be reduced compare with a multi-level inverter using single phase transformer. but still the 3-phase transformer inverter needs many switches. In this study, we proposed the isolated multi-level inverter using 3-phase transformers and common arm, in this paper. Also, using phase angle control method with switching frequency equal to output fundamental frequency, harmonics component of output voltage and switching loss can be reduced. Finally, We tested multi-level inverter to clarify electric circuit md reasonableness through Matlab simulation and experiment by using prototype inverter.
Keywords
H-Bridge; Multi-level inverter; 3-Phase transformer; CHML; Common arm;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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