MRAS Observers for Sensorless Control of Doubly-Fed Induction Generators

Author

Cárdenas, Roberto ; Peña, Rubén ; Clare, Jon ; Asher, Greg ; Proboste, José

Author_Institution

Univ. of Magallanes, Punta Arenas

Volume

23

Issue

3

fYear

2008

fDate

5/1/2008 12:00:00 AM

Firstpage

1075

Lastpage

1084

Abstract

This paper addresses the analysis and performance of several model reference adaptive system (MRAS) observers for sensorless vector control of doubly-fed induction machines. Small signal models allow the formal analysis of the observers for a given dynamic. The performance of each MRAS observer is analyzed, considering grid-connected and stand-alone operation. The MRAS observers are implemented in a 3.5 kW experimental prototype composed of a doubly-fed induction generator and a wind turbine emulator. Experimental results validate the predictions of the small signal models and demonstrate the performance of the sensorless methods during both steady state and variable speed wind energy generation.

Keywords

adaptive systems; asynchronous generators; machine control; power generation control; power grids; wind power; wind turbines; Small signal models; doubly-fed induction machines; grid-connected operation; model reference adaptive system observers; power 3.5 kW; sensorless vector control; stand-alone operation; steady state speed wind energy generation; variable speed wind energy generation; wind turbine emulator; Adaptive observers; induction generators; power generation control;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2008.921189

Filename

4495542