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A New Simplified Vector Control For A High Performance Common-Arm IHCML Inverter  

Song, Sung-Geun (전남대 공대 전기공학과)
Park, Sung-Jun (전남대 공대 전기공학과)
Nam, Hae-Kon (전남대 공대 전기공학과)
Kim, Kwang-Heon (전남대 공대 전기공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.56, no.6, 2007 , pp. 1071-1079 More about this Journal
Abstract
In this paper, a novel space vector control method for isolated multi-level inverter using 3-phase low frequency transformers is proposed. This method is based on the simplification of the space-vector diagram of a five-level inverter using calculated table into fully programming method. The execution time of the proposed method is about same as that of the method using calculated table. Also, the proposed method is easily applied to other case level inverter. We applied this method into the 3-phase IHCML inverter using common arm. It makes possible to use a single DC power source due to employing low frequency transformers. In this inverter, the number of transformers could be reduced compare with an exiting 3-phase multi-level inverter using single phase transformer. In addition, this method generates very low harmonic distortion operation with nearly fundamental switching frequency. Finally, We tested multi-level inverter to clarify electric circuit and reasonableness through Matlab simulation and experiment by using prototype inverter.
Keywords
H-Bridge; Multi-level inverter; 3-Phase transformer; CHML; Space Vector;
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