Sunday, 22 November 2015

A SINGLE-PHASE CASCADED MULTILEVEL INVERTER

  • This inverter is comprised of a series connection of the proposed basic unit and is able to only generate positive levels at the output. 
  • Therefore, an H-bridge is added to the proposed inverter. This inverter is called the developed cascaded multilevel inverter.



  •  In order to generate all voltage levels (even and odd) at the output, four different algorithms are proposed to determine the magnitude of dc voltage sources. 
  • Reduction in the number of power switches, driver circuits, and dc voltage sources is the advantage of the developed single-phase cascaded multilevel inverter. 
  • As a result, the installation space and cost of the inverter are reduced. 
  • These features are obtained by the comparison of the conventional cascaded multilevel inverters with the proposed cascaded topology. 
  • The ability of the proposed inverter to generate all voltage levels (even and odd) is reconfirmed by using the experimental results of a 15-level inverter.


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