Title :
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
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;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2002. APEC 2002. Seventeenth Annual IEEE
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-7404-5
DOI :
10.1109/APEC.2002.989372
