Modelling and control of four-wire voltage source inverter under unbalanced voltage condition for hybrid power system applications

Author

Vechiu, I. ; Camblong, H. ; Tapia, G. ; Curea, O. ; Dakyo, B.

Author_Institution

LIPSI-ESTIA, Bidart

fYear

2005

fDate

11-14 Sept. 2005

Abstract

In this paper, the operation of three-phase, four-wire voltage source inverter (VSI) under unbalanced voltage conditions is investigated. The inverter is particularly interesting for the simultaneous supply of three-phase and single-phase loads in transformerless hybrid power system (HPS) application. A control strategy for the VSI based on the decomposition of the supply voltages and currents into instantaneous positive, negative and homopolar sequence components is described. The three sequences are controlled using two different rotating reference frame systems, so that the disturbance of the output voltage due to the load unbalances is eliminated. Simulation results are presented to verify the validity of the control strategy

Keywords

hybrid power systems; invertors; load (electric); power generation control; four-wire voltage source inverter; hybrid power system; instantaneous homopolar sequence components; instantaneous negative sequence components; instantaneous positive sequence components; load unbalances; rotating reference frame systems; single-phase loads; three-phase loads; unbalanced voltage condition; Batteries; Hybrid power systems; Inverters; Power generation; Power quality; Power system modeling; Pulse width modulation; Renewable energy resources; Uniform resource locators; Voltage control; Converter control; Hybrid power integration; Modelling; Power Quality; Renewable energy system; VSI;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications, 2005 European Conference on

Conference_Location

Dresden

Print_ISBN

90-75815-09-3

Type

conf

DOI

10.1109/EPE.2005.219440

Filename

1665630