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Zero CM voltage multilevel inverters for smart grid applications

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4 Author(s)
Smolenski, R. ; Inst. of Electr. Eng., Univ. of Zielona Gora, Zielona Gora, Poland ; Kempski, A. ; Bojarski, J. ; Lezynski, P.

In the paper multilevel inverters with common mode (CM) voltage compensators are recommended as voltage sources that can constitute the main components of the energy balancing systems for end-user customers. These systems are a part of the modern LV and MV smart grids [1-3]. Measurements have been provided from a power system consisting in multilevel inverters and a passive compensator assuring sinusoidal output voltages and zero CM voltage [4]. The presented theoretical analyses and experimental results show that the main application problem with magnetic saturation of the CM choke becomes less important in multilevel inverters with specially selected modulation. This allows a reduction in size, weight and cost of inductive components of compensators in such applications.

Published in:

Electromagnetic Compatibility (EMC), 2011 IEEE International Symposium on

Date of Conference:

14-19 Aug. 2011