A Serially-Connected Compensator for Eliminating the Unbalanced Three-Phase Voltage Impact on Wind Turbine Generators

Eduard Muljadi; Z. Wu; P. Hsu; W. Gao

doi:10.1109/PESGM.2015.7286594

A Serially-Connected Compensator for Eliminating the Unbalanced Three-Phase Voltage Impact on Wind Turbine Generators

Eduard Muljadi, Z. Wu, P. Hsu, W. Gao

Research output: Contribution to conference › Paper

Abstract

Untransposed transmission lines, unbalanced tap changer operations, and unbalanced loading in weak distribution lines can cause unbalanced-voltage conditions. The resulting unbalanced voltage at the point of interconnection affects proper gird integration and reduces the lifetime of wind turbines due to power oscillations, torque pulsations, mechanical stresses, energy losses, and uneven and overheating of the generator stator winding. This work investigates the dynamic impact of unbalanced voltage on the mechanical and electrical components of integrated Fatigue, Aerodynamics, Structures, and Turbulence (FAST) wind turbine generation systems (WTGs) of Type 1 (squirrel-cage induction generator) and Type 3 (doubly-fed induction generator). To alleviate this impact, a serially-connected compensator for a three-phase power line is proposed to balance the wind turbine-side voltage. Dynamic simulation studies are conducted in MATLAB/Simulink to compare the responses of these two types of wind turbine models under normal and unbalanced-voltage operation conditions and demonstrate the effectiveness of the proposed compensator.

Original language	American English
Number of pages	5
DOIs	https://doi.org/10.1109/PESGM.2015.7286594
State	Published - 2015
Event	2015 IEEE Power and Energy Society General Meeting - Denver, Colorado Duration: 26 Jul 2015 → 30 Jul 2015

Conference

Conference	2015 IEEE Power and Energy Society General Meeting
City	Denver, Colorado
Period	26/07/15 → 30/07/15

Bibliographical note

See NREL/CP-5D00-63875 for preprint

NREL Publication Number

NREL/CP-5D00-67157

Keywords

aerodynamics
induction generators
reactive power
rotors
torque
wind turbines

Access to Document

10.1109/PESGM.2015.7286594

Cite this

@conference{6bd8e1657232433599ecb4ed9166b657,

title = "A Serially-Connected Compensator for Eliminating the Unbalanced Three-Phase Voltage Impact on Wind Turbine Generators",

abstract = "Untransposed transmission lines, unbalanced tap changer operations, and unbalanced loading in weak distribution lines can cause unbalanced-voltage conditions. The resulting unbalanced voltage at the point of interconnection affects proper gird integration and reduces the lifetime of wind turbines due to power oscillations, torque pulsations, mechanical stresses, energy losses, and uneven and overheating of the generator stator winding. This work investigates the dynamic impact of unbalanced voltage on the mechanical and electrical components of integrated Fatigue, Aerodynamics, Structures, and Turbulence (FAST) wind turbine generation systems (WTGs) of Type 1 (squirrel-cage induction generator) and Type 3 (doubly-fed induction generator). To alleviate this impact, a serially-connected compensator for a three-phase power line is proposed to balance the wind turbine-side voltage. Dynamic simulation studies are conducted in MATLAB/Simulink to compare the responses of these two types of wind turbine models under normal and unbalanced-voltage operation conditions and demonstrate the effectiveness of the proposed compensator.",

keywords = "aerodynamics, induction generators, reactive power, rotors, torque, wind turbines",

author = "Eduard Muljadi and Z. Wu and P. Hsu and W. Gao",

note = "See NREL/CP-5D00-63875 for preprint; 2015 IEEE Power and Energy Society General Meeting ; Conference date: 26-07-2015 Through 30-07-2015",

year = "2015",

doi = "10.1109/PESGM.2015.7286594",

language = "American English",

}

TY - CONF

T1 - A Serially-Connected Compensator for Eliminating the Unbalanced Three-Phase Voltage Impact on Wind Turbine Generators

AU - Muljadi, Eduard

AU - Wu, Z.

AU - Hsu, P.

AU - Gao, W.

N1 - See NREL/CP-5D00-63875 for preprint

PY - 2015

Y1 - 2015

N2 - Untransposed transmission lines, unbalanced tap changer operations, and unbalanced loading in weak distribution lines can cause unbalanced-voltage conditions. The resulting unbalanced voltage at the point of interconnection affects proper gird integration and reduces the lifetime of wind turbines due to power oscillations, torque pulsations, mechanical stresses, energy losses, and uneven and overheating of the generator stator winding. This work investigates the dynamic impact of unbalanced voltage on the mechanical and electrical components of integrated Fatigue, Aerodynamics, Structures, and Turbulence (FAST) wind turbine generation systems (WTGs) of Type 1 (squirrel-cage induction generator) and Type 3 (doubly-fed induction generator). To alleviate this impact, a serially-connected compensator for a three-phase power line is proposed to balance the wind turbine-side voltage. Dynamic simulation studies are conducted in MATLAB/Simulink to compare the responses of these two types of wind turbine models under normal and unbalanced-voltage operation conditions and demonstrate the effectiveness of the proposed compensator.

AB - Untransposed transmission lines, unbalanced tap changer operations, and unbalanced loading in weak distribution lines can cause unbalanced-voltage conditions. The resulting unbalanced voltage at the point of interconnection affects proper gird integration and reduces the lifetime of wind turbines due to power oscillations, torque pulsations, mechanical stresses, energy losses, and uneven and overheating of the generator stator winding. This work investigates the dynamic impact of unbalanced voltage on the mechanical and electrical components of integrated Fatigue, Aerodynamics, Structures, and Turbulence (FAST) wind turbine generation systems (WTGs) of Type 1 (squirrel-cage induction generator) and Type 3 (doubly-fed induction generator). To alleviate this impact, a serially-connected compensator for a three-phase power line is proposed to balance the wind turbine-side voltage. Dynamic simulation studies are conducted in MATLAB/Simulink to compare the responses of these two types of wind turbine models under normal and unbalanced-voltage operation conditions and demonstrate the effectiveness of the proposed compensator.

KW - aerodynamics

KW - induction generators

KW - reactive power

KW - rotors

KW - torque

KW - wind turbines

U2 - 10.1109/PESGM.2015.7286594

DO - 10.1109/PESGM.2015.7286594

M3 - Paper

T2 - 2015 IEEE Power and Energy Society General Meeting

Y2 - 26 July 2015 through 30 July 2015

ER -

A Serially-Connected Compensator for Eliminating the Unbalanced Three-Phase Voltage Impact on Wind Turbine Generators

Abstract

Conference

Bibliographical note

NREL Publication Number

Keywords

Access to Document

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Cite this