Application of synchronous and stationary frame controllers for unbalanced and nonlinear load compensation in 4-leg inverters

Author

Gannett, R.A. ; Sozio, J.C. ; Boroyevich, D.

Author_Institution

Bradley Dept. of Electr. Eng. & Comput. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

Volume

2

fYear

2002

fDate

2002

Firstpage

1038

Abstract

This paper presents inverter control strategies to compensate for the distorting effects of unbalanced and nonlinear loads in 4-leg inverter-fed power systems. Synchronous frame controllers are utilized at selected frequencies to eliminate positive and negative sequence distortion. Additionally, stationary frame controllers are employed to attenuate zero sequence distortion due to nonzero neutral currents. Combined with fundamental control this strategy is demonstrated to achieve a high level of performance under challenging loading conditions

Keywords

compensation; electric current control; invertors; load (electric); voltage control; 4-leg inverter-fed power systems; VSI; distorting effects compensation; inverter control strategies; negative sequence distortion; nonlinear loads; nonzero neutral currents; positive sequence distortion; stationary frame controllers; synchronous frame controllers; unbalanced loads; zero sequence distortion attenuation; Control systems; Frequency; Inverters; Leg; Load management; Nonlinear distortion; Power system control; Power systems; Steady-state; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2002. APEC 2002. Seventeenth Annual IEEE

Conference_Location

Dallas, TX

Print_ISBN

0-7803-7404-5

Type

conf

DOI

10.1109/APEC.2002.989372

Filename

989372