Average modeling of a three-phase inverter for integration in a microgrid

Author

Jankovic, Zeljko ; Novakovic, B. ; Bhavaraju, V. ; Nasiri, A.

Author_Institution

Power Electron. & Electr. Drives Lab., Univ. of Wisconsin, Milwaukee, WI, USA

fYear

2014

fDate

14-18 Sept. 2014

Firstpage

793

Lastpage

799

Abstract

This paper proposes average inverter model operating in two complementary modes suitable for microgrid simulation applications. Three phase voltage source inverter (VSI) connects to the microgrid through an LCL low pass filter and operates either in current controlled (CC) or voltage controlled (VC) mode. Models presented here take into account the nonlinear behavior of the switches, delays in the control loops, and the practical constraints. Models can simulate active and reactive power controls of the inverter in two different ways and also to estimate the low order harmonics of the output current. The performance of developed average models was verified by comparison of the simulation results between these models and detailed switching model of a 125 kW inverter.

Keywords

distributed power generation; electric current control; invertors; low-pass filters; voltage control; CC mode; LCL low pass filter; VC mode; VSI; active power controls; complementary modes; current controlled mode; low order harmonics; microgrid simulation applications; power 125 kW; reactive power controls; switching model; three phase voltage source inverter; voltage controlled mode; Equations; Inverters; Mathematical model; Microgrids; Support vector machines; Switches; Vectors; PWM Inverter; inverter model; microgrid; power control;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2014 IEEE

Conference_Location

Pittsburgh, PA

Type

conf

DOI

10.1109/ECCE.2014.6953477

Filename

6953477