A New Multilevel Inverter Based on Harvest of Unused Energies for Photovoltaic Applications

Document Type : Original Article

Authors

Department of Electrical and Computer Engineering, University of Birjand, Birjand, Iran

Abstract

In multilevel inverters, unused energies are created due to the asynchronous use of the input DC sources. when the input DC sources are replaced by renewable systems such as photovoltaic arrays, some of the input energies remain unused. This paper presents a new multilevel inverter topology that can harvest the unused energies and return them to another output which leads to the harvest of the maximum input energy. The harvest of maximum energy (HME) based multilevel inverter structure consists of two terminals. One is connected to AC-load and another is joined to DC-load or rechargeable batteries. Another merit of the proposed multilevel inverter is that the number of its switches is comparable to other structures where unused energies cannot be harvested. Selective harmonic elimination (SHE) has been used as the switching strategy in the proposed multilevel structure. To verify the performance of the HME-based multilevel inverter topology, the experimental results for a type seven-level inverter were performed by the TMS320F28379D DSP.

Keywords

Main Subjects

References

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International Journal of Engineering
Volume 35, Issue 12
TRANSACTIONS C: Aspects
December 2022
Pages 2377-2385

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