Flicker mitigation strategy for a doubly fed induction generator by torque control

Hdl Handle:
http://hdl.handle.net/10034/603950
Title:
Flicker mitigation strategy for a doubly fed induction generator by torque control
Authors:
Zhang, Yunqian Q.; Hu, Weihao; Chen, Zhe; Cheng, Ming; Hu, Yanting
Abstract:
Owing to the rotational sampling of turbulence, wind shear and tower shadow effects grid connected variable speed wind turbines could lead to the power fluctuations which may produce flicker during continuous operation. A model of an megawatt (MW)-level variable speed wind turbine with a doubly fed induction generator is presented to investigate the flicker mitigation. Taking advantage of the large inertia of the wind turbine rotor, a generator torque control (GTC) strategy is proposed, so that the power oscillation is stored as the kinetic energy of the wind turbine rotor, thus the flicker emission could be reduced. The GTC scheme is proposed and designed according to the generator rotational speed. The simulations are performed on the national renewable energy laboratory 1.5 MW upwind reference wind turbine model. Simulation results show that damping the generator active power by GTC is an effective means for flicker mitigation of variable speed wind turbines during continuous operation. keywords: {asynchronous generators;oscillations;power generation control;torque control;wind power plants;wind turbines;GTC strategy;continuous operation;doubly fed induction generator;flicker emission;flicker mitigation strategy;generator active power;generator torque control;kinetic energy;megawatt-level variable speed wind turbine;power oscillation;tower shadow effects grid connected variable speed wind turbines;turbulence;upwind reference wind turbine model;variable speed wind turbines;wind shear;wind turbine rotor
Citation:
Zhang, Y. Q., Hu, W.H., Chen, Z., Cheng, M., & Hu Y. (2014) Flicker mitigation strategy for a doubly fed induction generator by torque control. IET Renewable Power Generation, 8(2), 91-99. http://dx.doi.org/10.1049/iet-rpg.2013.0029
Publisher:
IET
Journal:
IET Renewable Power Generation
Publication Date:
Mar-2014
URI:
http://hdl.handle.net/10034/603950
DOI:
10.1049/iet-rpg.2013.0029
Additional Links:
http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=6746587&url=http%3A%2F%2Fieeexplore.ieee.org%2Fstamp%2Fstamp.jsp%3Ftp%3D%26arnumber%3D6746587
Type:
Working Paper
Language:
en
ISSN:
1752-1416
Appears in Collections:
Electronic and Electrical Engineering

Full metadata record

DC FieldValue Language
dc.contributor.authorZhang, Yunqian Q.en
dc.contributor.authorHu, Weihaoen
dc.contributor.authorChen, Zheen
dc.contributor.authorCheng, Mingen
dc.contributor.authorHu, Yantingen
dc.date.accessioned2016-03-30T09:24:41Zen
dc.date.available2016-03-30T09:24:41Zen
dc.date.issued2014-03en
dc.identifier.citationZhang, Y. Q., Hu, W.H., Chen, Z., Cheng, M., & Hu Y. (2014) Flicker mitigation strategy for a doubly fed induction generator by torque control. IET Renewable Power Generation, 8(2), 91-99. http://dx.doi.org/10.1049/iet-rpg.2013.0029en
dc.identifier.issn1752-1416en
dc.identifier.doi10.1049/iet-rpg.2013.0029en
dc.identifier.urihttp://hdl.handle.net/10034/603950en
dc.description.abstractOwing to the rotational sampling of turbulence, wind shear and tower shadow effects grid connected variable speed wind turbines could lead to the power fluctuations which may produce flicker during continuous operation. A model of an megawatt (MW)-level variable speed wind turbine with a doubly fed induction generator is presented to investigate the flicker mitigation. Taking advantage of the large inertia of the wind turbine rotor, a generator torque control (GTC) strategy is proposed, so that the power oscillation is stored as the kinetic energy of the wind turbine rotor, thus the flicker emission could be reduced. The GTC scheme is proposed and designed according to the generator rotational speed. The simulations are performed on the national renewable energy laboratory 1.5 MW upwind reference wind turbine model. Simulation results show that damping the generator active power by GTC is an effective means for flicker mitigation of variable speed wind turbines during continuous operation. keywords: {asynchronous generators;oscillations;power generation control;torque control;wind power plants;wind turbines;GTC strategy;continuous operation;doubly fed induction generator;flicker emission;flicker mitigation strategy;generator active power;generator torque control;kinetic energy;megawatt-level variable speed wind turbine;power oscillation;tower shadow effects grid connected variable speed wind turbines;turbulence;upwind reference wind turbine model;variable speed wind turbines;wind shear;wind turbine rotoren
dc.language.isoenen
dc.publisherIETen
dc.relation.urlhttp://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=6746587&url=http%3A%2F%2Fieeexplore.ieee.org%2Fstamp%2Fstamp.jsp%3Ftp%3D%26arnumber%3D6746587en
dc.subjectFlicker mitigationen
dc.subjecttorque controlen
dc.subjectasynchronous generators;oscillations;en
dc.subjectpower generation control;en
dc.subjectwind power plants;en
dc.subjectwind turbines;GTC strategy;continuous operationen
dc.subjectdoubly fed induction generator;en
dc.subjectflicker emission;en
dc.subjectflicker mitigation strategy;en
dc.subjectgenerator active power;generator torque control;en
dc.subjectkinetic energy;megawatt-level variable speed wind turbine;en
dc.subjectpower oscillation;tower shadow effectsen
dc.subjectgrid connected variable speed wind turbines;turbulence;en
dc.subjectupwind reference wind turbine model;en
dc.subjectvariable speed wind turbines;en
dc.subjectwind shear;wind turbine rotoren
dc.titleFlicker mitigation strategy for a doubly fed induction generator by torque controlen
dc.typeWorking Paperen
dc.identifier.journalIET Renewable Power Generationen
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