Three-phase inverter topologies for grid-connected photovoltaic systems

Author

Ozkan, Ziya ; Hava, Ahmet M.

Author_Institution

Dept. of Electr. & Electron. Eng., Middle East Tech. Univ., Ankara, Turkey

fYear

2014

fDate

18-21 May 2014

Firstpage

498

Lastpage

505

Abstract

In this paper, the energy conversion efficiency (ECE) and cost characteristics of three-phase photovoltaic (PV) inverters (3P-PVIs) are studied comprehensively based on the operating principles of topologies and with respect to various performance indicators such as semiconductor device count and utilization factors, semiconductor efficiency (SE), dc-bus capacitor and filter inductor voltage/current ripple factors. The evaluation of topologies are based on datasheet parameters and analytical results are provided for 50 kW, 100 kW, and 200 kW power ratings. Such an evaluation of topologies is beneficial to engineers to wisely choose the appropriate topology for both transformerless and transformer based PV systems and to design the inverter accordingly.

Keywords

invertors; photovoltaic power systems; power grids; dc-bus capacitor; energy conversion efficiency; filter inductor voltage-current ripple factors; grid-connected photovoltaic system; power 100 kW; power 200 kW; power 50 kW; semiconductor efficiency; three-phase inverter topologies; transformer based PV system; transformerless based PV system; Bismuth; Insulated gate bipolar transistors; Inverters; Switches; Topology; Energy conversion efficiency; Grid-connected; Photovoltaic inverter; Three-phase inverters;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE-ASIA), 2014 International

Conference_Location

Hiroshima

Type

conf

DOI

10.1109/IPEC.2014.6869630

Filename

6869630