Grid Connected Three-Phase Boost-Inverter for Solar PV Systems

Eyyup Demirkutlu, Ires Iskender

Abstract


This paper presents a transformerless grid-connected three-phase boost-type inverter derived from the Swiss Rectifier (SR) and can be used in solar systems. The proposed boost-inverter retains the great advantages of the Swiss rectifier. Since the number of switches that are instantly switched with high frequency is only two, the switching losses are very low, therefore the proposed boost-inverter is very advantageous in terms of efficiency. Without having large transformer and electrolytic bus capacitors, the boost-inverter has an advantage in terms of size and weight. The switching states of the topology are given in detail. The operation principle of the boost-inverter is described with the help of equivalent circuits. A cascaded control method including current and voltage loops is proposed. Simulation results are presented to validate the operation of the boost-inverter and show quality performance of the proposed control approach.

Keywords


Boost; Inverter; PV Solar system; Grid connection; Current injection

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References


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DOI (PDF): https://doi.org/10.20508/ijrer.v11i2.11989.g8213

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