Space vectors modulation for nine-switch converters

Seyed Mohammad Dehghan Dehnavi, Mustafa Mohamadian, Ali Yazdian, Farhad Ashrafzadeh

Research output: Contribution to journalArticlepeer-review

134 Citations (Scopus)


Recently, nine-switch inverter and nine-switch-zsource inverter have been proposed as dual output inverters. In this paper, the space vector modulation (SVM) of nine-switch inverter and nine-switch-z-source inverter is proposed. The proposed method increases the sum of modulation indices up to 15% in contrastwith the conventional, scheme in which the sum of modulation indices is equal or less than one. The extra voltage available for a given input dc-voltage, translates to a higher torque-a critical factor for defining the capacity of products in marketplace. Also, in order to further reduce the cost of power devices and also thermal heat effect, and to reduce the number of semiconductor switching, specific SVM switching pattern is presented. This feature will be advantageous for high-power inverter applications where cost and efficiency are key decision factors. Furthermore, a novel SVM is proposed for minimizing total harmonic distortion. The performance of the proposed SVM for both nine-switch inverter and nine-switch-z-source inverter is verified by simulation. Experimental results validate the simulation results as well as the superiority of the proposed SVM.

Original languageEnglish
Article number5340584
Pages (from-to)1488-1496
Number of pages9
JournalIEEE Transactions on Power Electronics
Issue number6
Early online date24 Nov 2009
Publication statusPublished - 1 Jun 2010
Externally publishedYes


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