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Asymmetrical Cascade Multilevel Converters with Non-Integer or Dynamically Changing DC Voltage Ratios: Concepts and Modulation Techniques

Author(s):

S. Lu, S. Mariéthoz, K.A. Corzine
Conference/Journal:

IEEE Trans. on Industrial Electronics, vol. 57, no. 7, pp. 2411-2418
Abstract:

Asymmetrical cascade multilevel inverters offer a high number of voltage levels with a given switch count. For a given topology, the number of levels depends on the configuration of the DC-voltage (ratios). This paper deals with the design and control of such converters with non-integer DC voltage ratio, which leads to unevenly distributed space vectors. It describes how to select the DC-voltage ratio configurations that yield space vectors as evenly distributed as possible. It describes how to produce an effective PWM modulation that allows generating undistorted current even in the presence of (some) unevenly distributed space vectors.

Year:

2010
Type of Publication:

(01)Article
Supervisor:



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% Autogenerated BibTeX entry
@Article { LuMar:2010:IFA_3506,
    author={S. Lu and S. Mari{\'e}thoz and K.A. Corzine},
    title={{Asymmetrical Cascade Multilevel Converters with Non-Integer
	  or Dynamically Changing DC Voltage Ratios: Concepts and
	  Modulation Techniques}},
    journal={IEEE Trans. on Industrial Electronics},
    year={2010},
    volume={57},
    number={7},
    pages={2411--2418},
    month=jul,
    url={http://control.ee.ethz.ch/index.cgi?page=publications;action=details;id=3506}
}
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