TY - GEN
T1 - Control of a doubly-fed induction wind generator under unbalanced grid voltage conditions
AU - Brekken, Ted
AU - Mohan, Ned
AU - Undeland, Tore
PY - 2005
Y1 - 2005
N2 - Wind energy is often installed in rural, remote areas characterized by weak, unbalanced power transmission grids. In induction wind generators, unbalanced three-phase stator voltages cause a number of problems, such as overheating, over-current, and stress on the mechanical components from torque pulsations. Therefore, beyond a certain amount of unbalance, induction wind generators are switched out of the network. This can further weaken the grid. In doubly-fed induction generators, control of rotor currents allows for adjustable speed operation and reactive power control. In addition, it is possible to control the rotor currents to correct for the problems caused by unbalanced stator voltages, including torque pulsations and unbalanced stator currents. This paper presents a novel voltage mode controller design for a doubly-fed induction generator that provides variable speed, reactive power control. Also, under stator voltage unbalance conditions, the proposed control eliminates torque pulsations and draws more balanced currents from the utility.
AB - Wind energy is often installed in rural, remote areas characterized by weak, unbalanced power transmission grids. In induction wind generators, unbalanced three-phase stator voltages cause a number of problems, such as overheating, over-current, and stress on the mechanical components from torque pulsations. Therefore, beyond a certain amount of unbalance, induction wind generators are switched out of the network. This can further weaken the grid. In doubly-fed induction generators, control of rotor currents allows for adjustable speed operation and reactive power control. In addition, it is possible to control the rotor currents to correct for the problems caused by unbalanced stator voltages, including torque pulsations and unbalanced stator currents. This paper presents a novel voltage mode controller design for a doubly-fed induction generator that provides variable speed, reactive power control. Also, under stator voltage unbalance conditions, the proposed control eliminates torque pulsations and draws more balanced currents from the utility.
KW - Active damping
KW - Doubly fed induction motor
KW - Power quality
KW - Vector control
KW - Windgenerator systems
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U2 - 10.1109/epe.2005.219315
DO - 10.1109/epe.2005.219315
M3 - Conference contribution
AN - SCOPUS:33947657812
SN - 9075815085
SN - 9789075815085
T3 - 2005 European Conference on Power Electronics and Applications
BT - 2005 European Conference on Power Electronics and Applications
PB - IEEE Computer Society
T2 - 2005 European Conference on Power Electronics and Applications
Y2 - 11 September 2005 through 14 September 2005
ER -
