Abstract
A new modulation approach was presented for the control of neutral-point (NP) voltage variation in the three-level NP-clamped voltage source inverter, and the average NP current model was established based on vector diagram partition. Thus, theory base was built for balancing control of NP potential. Theoretical analysis and experimental results indicate that the proposed method for NP balancing control vector synthesizing concept based can make the average NP current zero, and do not influence NP potential within every sample period. The effectiveness of proposed research approach was verified by simulative and experimental results.
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Song, Wx., Yao, G., Chen, C. et al. Control method of three-level neutral-point-clamped inverter based on voltage vector diagram partition. J. Shanghai Jiaotong Univ. (Sci.) 13, 457–461 (2008). https://doi.org/10.1007/s12204-008-0457-1
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DOI: https://doi.org/10.1007/s12204-008-0457-1