UDE-based robust control of variable-speed wind turbines

Ren, Beibei; Zhong, Qing-Chang

doi:10.1109/iecon.2013.6699744

Cited by 21 publications

(11 citation statements)

References 26 publications

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“…The UDEbased control does not require a completely-known system model or a disturbance model and is robust against structured/unstructured uncertainties (e.g., modeling error, parameter variation) and external disturbances. The UDE-based robust control has demonstrated its excellent performance in handling uncertainties and disturbances yet a simple control scheme, and has been successfully applied to robust inputoutput linearization [29], [30] and combined with sliding-mode control [31], [32], and further extended to uncertain systems with state delays, for both linear systems [33] and nonlinear systems [34], recently in variable-speed wind turbines [35].…”

Section: Introductionmentioning

confidence: 99%

Robust Control for a Class of Nonaffine Nonlinear Systems Based on the Uncertainty and Disturbance Estimator

Ren

Zhong

Chen

2015

IEEE Trans. Ind. Electron.

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198

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In this paper, the UDE (uncertainty and disturbance estimator)-based robust control is applied to the control of a class of non-affine nonlinear systems. This class of systems is very general and covers a large range of nonlinear systems. However, the control of such systems is very challenging because the input variables are not expressed in an affine form, which leads to the failure of using feedback linearization. The proposed UDEbased control method avoids the "inverse operator" construction which might result in the control singularity problem. Moreover, the general assumption on the uncertainty and disturbance term is relaxed and only its bandwidth information is required for the control design. The asymptotic stability of the closedloop system is established. The proposed approach is easy to be implemented and tuned while bringing very good robust performance. The important features and performance of the proposed approach are demonstrated through both simulation studies and experimental validation on a servo system with nonaffine uncertainties.

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Section: Introductionmentioning

confidence: 99%

Robust Control for a Class of Nonaffine Nonlinear Systems Based on the Uncertainty and Disturbance Estimator

Ren

Zhong

Chen

2015

IEEE Trans. Ind. Electron.

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198

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“…Rotor açısal hızı üzerinden verim-hız oranını ve pervane kanadı açısını aynı anda denetleyerek değişken hızlı rüzgâr türbinlerinin enerji yakalama miktarını en yüksek seviyeye çıkarabilen doğrusal olmayan dayanıklı bir denetim tasarımı Iyasere ve diğerleri tarafından [19] çalışmasında önerilmiştir. Değişken hızlı rüzgâr türbininin rotor hızının asimptotik takibini sağlayan bir başka dayanıklı denetim yaklaşımı Ren ve Zhong tarafından önerilmiştir [20]. Bahsedilen çalışmada, belirsizliklerin ve bozan etkilerin varlığında denetimi sağlayabilmek amacıyla, denetleyici bozan etki ve belirsizlik kestirimcisi ile desteklenmiştir.…”

Section: Introductionunclassified

“…Değişken hızlı rüzgâr türbinlerinin denetiminde özellikle son dönemde, hem karşılaşılabilecek problemlerle başa çıkabilecek yeterlilikte hem de dayanıklı denetleyicilere göre daha az denetim çabasına ihtiyaç duyarak denetim amacını sağlayabilecek yapıda olmalarından ötürü, dayanıklı uyarlamalı denetleyiciler de kullanılmaya başlanmıştır [14], [20], [26], [27], [29], [31]. Bu tip yapıların da bazılarında uyarlamalı kısmın sağlanması için ek araçlara ihtiyaç duyulmaktadır [20], [27], [29]. Fakat uyarlamalı kısmın da tasarımın içinde sunulduğu dayanıklı uyarlamalı yapıların kullanışlılık ve verimlilik açısından daha iyi tasarımlar olduğu bir gerçektir.…”

Section: Introductionunclassified

A Backstepping Nonlinear Control Design for Variable Speed Wind Turbines

Bıdıklı¹

2019

Pamukkale J Eng Sci

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Değişken hızlı rüzgâr türbinlerinin rotor hızını uygun bir şekilde denetlemek, enerji üretimini ve güç verimliliğini eniyilemek için başvurulabilecek yöntemlerden bir tanesidir. Bu çalışmanın temel hedefi değişken hızlı rüzgâr türbinlerinin rotor hızı denetimini sağlayabilecek yapıda özgün bir doğrusal olmayan dayanıklı ve uyarlamalı denetleyici tasarlamaktır. Değişken hızlı rüzgâr türbinlerinin mekanik ve elektrik yapıları incelendiğinde geri adımlamalı denetim tasarımı yaklaşımının bu tip sistemler için denetleyici tasarımı gerçeklemeye oldukça uygun olduğu tespit edilmiştir. Bu durum göz önünde bulundurularak bu çalışmada sunulan denetleyici yapısı geri adımlamalı denetim tasarımı yaklaşımı kullanılarak tasarlanmıştır. Denetleyicinin dayanıklı yapısı sistem modeli ve parametreleri hakkında herhangi bir bilgiye ihtiyaç duyulmaksızın denetim hedefine ulaşmaya olanak sağlarken, uyarlamalı yapısı ise denetim esnasında parametrik belirsizlikleri telafi edebilmektedir. Tasarlanan denetleyicinin kuramsal çözümlemesi Lyapunov-tabanlı bir yöntemle tamamlanarak çalışmada sunulmuştur. Elde edilen sonuçlar, tasarlanan denetleyicinin başarımının kuramsal bir ispatı niteliğindedir. Tasarımın başarımını daha net bir şekilde ortaya koymak için ise takip rotası olarak farklı rotor hızı senaryoları kullanılan benzetimler yapılmış ve bu benzetimlerin sonuçlarına çalışmada yer verilmiştir. Controlling the rotor speed of variable speed wind turbines properly is one of the most appropriate methods to optimize the energy production and power efficiency of these type of energy production systems. Designing a novel nonlinear robust adaptive controller that is able to provide the rotor speed control of variable speed wind turbines is the main purpose of this study. It was identified that the backstepping control design technique is a feasible way to design a controller for variable speed wind turbines when their mechanical and electrical subsystems are considered. The control design presented in this study is designed via backstepping control design approach by considering this issue. Robust structure of the designed controller provides that it reaches control purpose without using any information about system model and its parameters while it adaptive structure compensates the parametric uncertainties during the control process. Lyapunov-based arguments are used to complete the theoretical analysis of the designed controller. Results of this analysis theoretically prove that the designed controller is able to reach the control purpose. Additionally, performance of the designed controller is demonstrated via numerical simulation results that are realized by considering different desired rotor speed scenarios.

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“…The UDE method, which was proposed in [14], has many advantages in both design and implementation respects and its excellent performance in handling the uncertainty and disturbance yet with very easy tuning and implementation has been demonstrated in recent years through both theories (including extensions to both linear [14,15] and nonlinear systems [16][17][18][19][20], systems with delays [15,17] etc.) and wide applications (covering mechatronics and robotics [21], electrical machines and drives [14,20], renewable energy [22], aerospace and automotive systems [23,24] etc). The basic idea of the UDE method is that in the frequency domain an engineering signal (the lumped system uncertainty and external disturbance) can be approximated by putting it through a filter with the appropriate bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Robust Attitude Tracking Control for a Quadrotor Based on the Uncertainty and Disturbance Estimator

Dai

Lü

Ren

et al. 2015

Volume 1: Adaptive and Intelligent Systems Control; Advances in Control Design Methods; Advances in Non-Linear and Optimal Cont

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In this paper, a robust control method based on the uncertainty and disturbance estimator (UDE) is developed to achieve the attitude tracking control for a quadrotor. To facilitate the control design, the coupled terms in the roll, pitch and yaw dynamics are lumped into the uncertainty term and the remained dynamics can be regarded as decoupled subsystems. As a result, for each subsystem, the lumped uncertainty term contains all the coupled terms, uncertainties and disturbances, then the UDE method is applied for the uncertainty compensation. Compared with the existing UDE control works, the introduced filtered tracking error dynamics simplifies the controller design and implementation. Furthermore, the stability analysis of the closed-loop system is established and experimental studies are carried out to illustrate the effectiveness of the developed control method.

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UDE-based robust control of variable-speed wind turbines

Cited by 21 publications

References 26 publications

Robust Control for a Class of Nonaffine Nonlinear Systems Based on the Uncertainty and Disturbance Estimator

Robust Control for a Class of Nonaffine Nonlinear Systems Based on the Uncertainty and Disturbance Estimator

A Backstepping Nonlinear Control Design for Variable Speed Wind Turbines

Robust Attitude Tracking Control for a Quadrotor Based on the Uncertainty and Disturbance Estimator

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