A Nine-Level Converter Topology for Transformer less Grid Connected PV Systems |
Author(s): |
| Soma Venkata Suresh Kumar , CBIT, Proddatur; M.Ashok, CBIT; Siva Prasad Jinka, CBIT |
Keywords: |
| Photo Voltaic (PV) Systems, Pulse Width Modulated Inverters, Multilevel Systems, Grid Frequency |
Abstract |
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In this paper we present a single phase transformer less grid connected PV System having two cascaded full bridge converters which will maintain different voltage levels at the dc-link. With a single DC bus the converter can synthesize up to nine voltage levels as one of the bridge is supplied by a flying capacitor. Due to the increase in the number of levels will reduce the harmonic distortion and interference. To improve the efficiency most of them are switched at grid frequency. A suitable switching strategy is proposed for controlling the voltage across the flying capacitor. Simulation is done and the performance of the system is observed. |
Other Details |
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Paper ID: IJSRDV3I80180 Published in: Volume : 3, Issue : 8 Publication Date: 01/11/2015 Page(s): 254-257 |
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