Discrete sliding mode control strategy for direct real and reactive power regulation of wind driven DFIG

Pande, Vijay N.; Mate, U.M.; Kurode, Shailaja

doi:10.1016/j.epsr.2013.03.001

Cited by 34 publications

(15 citation statements)

References 29 publications

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“…For robust and high performance DPC, a sliding mode controller (SMC) was studied in the literature [16][17][18][19][20][21][22][23]. It is an effective, high frequency switching control strategy for nonlinear systems with uncertainties.…”

Section: Introductionmentioning

confidence: 99%

“…It can offer many good properties such as good performance against unmodeled dynamics, insensitivity to parameters variation, external disturbance rejection and fast dynamic response. A SMC was designed to control the RSC under normal abnormal grid voltage conditions [16][17][18][19][20][21][22][23]. In [16], an integral sliding mode controller was designed to regulate the electromagnetic torque and stator reactive power.…”

Section: Introductionmentioning

confidence: 99%

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Sliding mode direct power control of RSC for DFIGs driven by variable speed wind turbines

Shehata

2015

Alexandria Engineering Journal

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In spite of its several advantages, a classic direct power control (DPC) of doubly fed induction generators (DFIGs) driven by variable speed wind turbines has some drawbacks. In this paper, a simple and robust total sliding mode controller (TSMC) is designed to improve the classical DPC performance without complicating the overall scheme. The TSMC is designed to regulate the DFIG stator active and reactive powers. Two integral switching functions are selected for describing the switching surfaces of the active and reactive powers. Reaching phase stability problem of the classical sliding mode controller is avoided in the proposed TSMC. Neither current control loops nor accurate values of machine parameters are required in the proposed scheme. In addition, axes transformation of the stator voltage and current are eliminated. The grid side converter is controlled based on DPC principle to regulate both DC-link voltage and total reactive power. The feasibility of the proposed DPC scheme is validated through simulation studies on a 1.5 MW wind power generation system. The performance of the proposed and conventional DPC schemes is compared under different operating conditions. ª 2015 Faculty of Engineering, Alexandria University. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sliding mode direct power control of RSC for DFIGs driven by variable speed wind turbines

Shehata

2015

Alexandria Engineering Journal

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“…The usual classification of DPC algorithms is based on constant vs variable switching frequency operation [2]. Due to its important advantages, the constant switching frequency is more popular [10]- [18]. There are two concepts: DPC with the space vector modulation (SVM) and a predictive based DPC.…”

Section: Introductionmentioning

confidence: 99%

“…There are two concepts: DPC with the space vector modulation (SVM) and a predictive based DPC. The SVM based approaches [10]- [15] [18] are simpler for digital hardware realization, because the modern digital hardware includes a modulator. The application of the predictive DPC [16][17] requires complicated online calculations needing a complex digital hardware.…”

Section: Introductionmentioning

confidence: 99%

Discrete-time sliding mode control system of the grid-connected doubly fed induction generator at the low sampling frequency

Huseinbegović

Peruničić

Masic

et al. 2015

2015 IEEE International Conference on Industrial Technology (ICIT)

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A new design of a digital control system for the grid-connected doubly fed induction generator is described in this paper. A discrete-time state-space model of the controlled system is obtained in the stator stationary reference frame. Using this model, a discrete-time sliding mode based control system is designed. Its tasks are the grid synchronization and the direct power control. The discrete-time equivalent control method is applied, and the control vector is calculated from the samples of voltages and currents. The control vector is converted to a switching sequence in a power converter using the space vector modulation. The modulation period is equal to the sampling period. A disturbance compensator is designed to eliminate the influence of the discretization effect and model uncertainties. In this way, a robust control system with a constant switching frequency is designed. Its digital hardware implementation is simple. The performance of the designed control system is tested on a simulation model.978-1-4799-7800-7/15/$31.00 ©2015 IEEE

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“…In these DFIG wind turbines the control system should be designed in order to achieve the following objectives: regulating the DFIG rotor speed for maximum wind power capture, maintaining the DFIG stator output voltage frequency constant and controlling the DFIG reactive power [10].…”

Section: Introductionmentioning

confidence: 99%

A Real-Time Sliding Mode Control for a Wind Energy System Based on a Doubly Fed Induction Generator

et al. 2014

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In this paper, a real time sliding mode control scheme for a variable speed wind turbine that incorporates a doubly feed induction generator is described. In this design, the so-called vector control theory is applied, in order to simplify the system electrical equations. The proposed control scheme involves a low computational cost and therefore can be implemented in real-time applications using a low cost Digital Signal Processor (DSP). The stability analysis of the proposed sliding mode controller under disturbances and parameter uncertainties is provided using the Lyapunov stability theory. A new experimental platform has been designed and constructed in order to analyze the real-time performance of the proposed controller in a real system. Finally, the experimental validation carried out in the experimental platform shows; on the one hand that the proposed controller provides high-performance dynamic characteristics, and on the other hand that this scheme is robust with respect to the uncertainties that usually appear in the real systems.

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Discrete sliding mode control strategy for direct real and reactive power regulation of wind driven DFIG

Cited by 34 publications

References 29 publications

Sliding mode direct power control of RSC for DFIGs driven by variable speed wind turbines

Sliding mode direct power control of RSC for DFIGs driven by variable speed wind turbines

Discrete-time sliding mode control system of the grid-connected doubly fed induction generator at the low sampling frequency

A Real-Time Sliding Mode Control for a Wind Energy System Based on a Doubly Fed Induction Generator

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