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Cascaded multilevel inverter modulation strategies: a novel solution based on duty-cycle space vector approach

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4 Author(s)
Rossi, C. ; Dept. of Electr. Eng., Bologna, Italy ; Serra, G. ; Tani, A. ; Zarri, L.

In this paper the problem of the modulation strategy of a cascaded multilevel inverter is solved using the duty-cycle space vector (DCSV) approach, which is based on the space vector representation of the switch state. This approach simplifies the study of the modulation strategies and leads to a general solution of the problem, providing an intuitive graphical representation of the modulation properties. Starting from the general solution, a great number of particular modulation strategies, having different characteristics, can be immediately derived. An example of application to a 5-level inverter is presented. The effectiveness of the proposed approach is tested by numerical simulations.

Published in:

Industrial Electronics, 2005. ISIE 2005. Proceedings of the IEEE International Symposium on  (Volume:2 )

Date of Conference:

20-23 June 2005

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