Title :
Power quality improvement using nonlinear-load compensation capability of variable speed DFIG based on DPC-SVM method
Author :
Ejlali, Alireza ; Arab Khaburi, Davood
Author_Institution :
Dept. Electr. Eng., Iran Univ. of Sci. & Technol., Tehran, Iran
Abstract :
This paper presents a novel method for power quality improvement of Wind Energy Conversion System (WECS) by compensation of grid harmonic currents produced by non-linear loads. The proposed method which has been applied to a Doubly Fed Induction Generator (DFIG) through rotor side converter(RSC), provides simultaneous speed control and power quality improvement. The Direct Power Control (DPC) method with constant switching frequency has been used for RSC control and power quality improvement has been performed by compensation of harmonic´s active and reactive power of nonlinear load. Also, Grid Side Converter (GSC) control provides constant DC voltage for RSC and acts with unity power factor condition.
Keywords :
angular velocity control; asynchronous generators; harmonics suppression; machine control; power control; power convertors; power supply quality; wind power plants; DPC method; DPC-SVM method; GSC; RSC control; WECS; constant switching frequency; direct power control; doubly fed induction generator; grid harmonic currents compensation; grid side converter; nonlinear-load compensation capability; power quality improvement; rotor side converter; simultaneous speed control; unity power factor condition; variable speed DFIG; wind energy conversion system; Harmonic analysis; Modulation; Phase locked loops; Robustness; Torque; DFIG; Direct Power Control (DPC); Harmonic current mitigation; Power quality improvement; Wind Energy Conversion System (WECS);
Conference_Titel :
Power Electronics, Drive Systems and Technologies Conference (PEDSTC), 2014 5th
Conference_Location :
Tehran
DOI :
10.1109/PEDSTC.2014.6799386
