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Common voltage eliminating of SVM diode clamping three-level inverter connected to grid

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6 Author(s)
Yougui Guo ; Coll. of Inf. Eng., Xiangtan Univ., Xiangtan, China ; Ping Zeng ; Jieqiong Zhu ; Lijuan Li
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A novel method of common voltage eliminating is put forward for SVM diode clamping three-level inverter connected to grid by calculation of common voltage of its various switching states. PLECS is used to model this three-level inverter connected to grid and good results are obtained. First analysis of common mode voltage for switching states of diode clamping 3-level inverter is given in detail. Second the common mode voltage eliminating control strategy of SVM is described for diode clamping three-level inverter. Third, PLECS is briefly introduced. Fourth, the modeling of diode clamping three-level inverter is presented with PLECS. Finally, a series of simulations are carried out. The simulation results tell us PLECS is a very powerful tool to real power circuits modeling. They have also verified that proposed common mode voltage eliminating control strategy of SVM is feasible to control the diode clamping three-level inverter. But further research has to be done to get rid of the common mode voltage completely by controlling the voltages of two capacitors at the input terminal.

Published in:

Materials for Renewable Energy & Environment (ICMREE), 2011 International Conference on  (Volume:2 )

Date of Conference:

20-22 May 2011