Open AccessDirect slip angle control for rotor side converter of standalone DFIG‐DC system
Author(s) -
Fakhraee Hanif,
Babaei Mojtaba,
Alizadeh Mohsen,
Tabrizian Mohammad
Publication year - 2022
Publication title -
iet renewable power generation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.005
H-Index - 76
eISSN - 1752-1424
pISSN - 1752-1416
DOI - 10.1049/rpg2.12538
Subject(s) - control theory (sociology) , stator , torque ripple , doubly fed electric machine , harmonics , voltage , torque , ripple , direct torque control , rotor (electric) , wind power , computer science , ac power , engineering , physics , induction motor , electrical engineering , control (management) , artificial intelligence , thermodynamics
This paper presents a direct slip angle control (DSAC) for rotor side power converter of standalone doubly‐fed induction generator (DFIG) DC systems. The conventional direct torque control (DTC) for the rotor side converter (RSC) of the standalone DFIG‐DC system is also introduced to evaluate the proposed DSAC compared to the conventional DTC method. In this regard, the proposed DSAC method is mathematically analyzed. Then, three states including output DC voltage change, wind speed change, and load change are simulated and performed for both the proposed DSAC and conventional DTC methods. Various simulations and experiments substantiate that the electromagnetic torque ripple, current harmonics, and the output DC voltage dip, caused by the sudden load‐change, are reduced in the proposed DSAC method compared to the conventional DTC method. Besides, the parameter dependency is reduced in the proposed DSAC method since the stator voltage and current sensors are removed.