Open AccessMitigation of distorted and unbalanced stator voltage of stand‐alone doubly fed induction generators using repetitive control technique
Author(s) -
Wei Feng,
Zhang Xinan,
Vilathgamuwa Don Mahinda,
Choi San Shing,
Wang Shuai
Publication year - 2013
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.815
H-Index - 97
eISSN - 1751-8679
pISSN - 1751-8660
DOI - 10.1049/iet-epa.2012.0317
Subject(s) - stator , control theory (sociology) , induction generator , induction heating , voltage , induction motor , engineering , torque , computation , total harmonic distortion , materials science , mathematics , physics , electromagnetic coil , computer science , electrical engineering , control (management) , thermodynamics , algorithm , artificial intelligence
Unbalanced or non‐linear loads result in distorted stator currents and electromagnetic torque pulsations in stand‐alone doubly fed induction generators (DFIGs). This study proposes the use of a proportional‐integral repetitive control (PIRC) scheme so as to mitigate the levels of harmonic and unbalance at the stator terminals of the DFIG. The PIRC is structurally simpler and requires much less computation than existing methods. Analysis of the PIRC operation and the methodology to determine the control parameters is included. Simulation study as well as laboratory test measurements demonstrate clearly the effectiveness of the proposed PIRC control scheme.