دانلود رایگان مقاله انگلیسی اینورتر جدید چند سطحی اساسی با تعداد عناصر سوئچینگ کاهش یافته - IEEE 2018

Abstract

This research presents an optimum asymmetric fundamental inverter for cascaded multilevel inverters. This circuit can produce total voltage levels without any extra circuit. Then, cascaded structures were used in order to determine the magnitudes of DC links which have been suggested. The advantage of the suggested cascaded connection is the increasing of the output voltage levels in the same number of switching elements, in comparison with other cascaded structures. PSCAD/EMTDC simulation outcome are demonstrated to confirm the suggested structure has an excellent operation.

VI. CONCLUSION

The fundamental 15-levels inverter is a new inverter structure for the cascaded multilevel inverters. The main advantage of this structure was the generating of maximum levels by using minimum number of elements such as switch, drivers and IGBTs. In order to achieve maximum voltage level which leads to lower THD in the output voltage, three methods to determine the magnitude of DC links have been suggested. The suggested cascaded inverter has compared with other cascaded structure in term of switching elements and DC links. In conclusion, to verify and approve of representation fundamental inverter, the results of simulation have been carrying out on a single phase 15- levels inverter.