Magnet failure-resilient control of a direct-drive tidal turbine

Toumi, Sana; Elbouchikhi, Elhoussin; Benbouzid, Mohamed; Feld, Gilles

doi:10.1016/j.oceaneng.2019.106207

Cited by 20 publications

(11 citation statements)

References 26 publications

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“…Thus, to overcome this shortcoming, a high order sliding-mode controller (HSMC) is introduced to replace the PID loop. It is well known that this control has high robustness and stability compared to PID [6]. Then, Equation ( 17) is expressed in the following form:…”

Section: Desired Torque Design By Fs-hsmcmentioning

confidence: 99%

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Energy-Based Combined Nonlinear Observer and Voltage Controller for a PMSG Using Fuzzy Supervisor High Order Sliding Mode in a Marine Current Power System

et al. 2021

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A permanent magnet synchronous generator (PMSG) in s grid-connected tidal energy conversion system presents numerous advantages such as high-power density and ease of maintenance. However, the nonlinear properties of the generator and parametric uncertainties make the controller design more than a simple challenge. Within this paper we present a new combined passivity-based voltage control (PBVC) with a nonlinear observer. The PBVC is used to design the desired dynamics of the system, while the nonlinear observer serves to reconstruct the measured signals. A high order sliding-mode based fuzzy supervisory approach is selected to design the desired dynamics. This paper addresses the following two main parts: controlling the PMSG to guarantee the maximum tidal power extraction and integrate into to the grid-side converter (GSC), for this the new controller is proposed. The second task is to regulate the generated reactive power and the DC-link voltage to their references under any disturbances related to the machine-side converter (MSC). Furthermore, the robustness of the controller against parameter changes was taken into consideration. The developed controller is tested under parameter variations and compared to benchmark nonlinear control methods. Numerical simulations are performed in MATLAB/Simulink which clearly demonstrates the robustness of the proposed technique over the compared control methods. Moreover, the proposed controller is also validated using a processor in the loop (PIL) experiment using Texas Instruments (TI) Launchpad.

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Section: Desired Torque Design By Fs-hsmcmentioning

confidence: 99%

“…During the last few decades, extensive control theories and techniques have been reported in the literature proposing solutions to the stated PMSG problems. A magnetic equivalent circuit methodbased second-order sliding mode is proposed in [6]. However, external disturbances and parameter changes have not been considered.…”

Section: Introductionmentioning

confidence: 99%

Energy-Based Combined Nonlinear Observer and Voltage Controller for a PMSG Using Fuzzy Supervisor High Order Sliding Mode in a Marine Current Power System

et al. 2021

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“…Nevertheless, these systems are exposed to functional and environmental severe conditions. Indeed, different faults can exist in these systems, whether on the turbine marine, on the generator, or on the converters [1]. Therefore, the detection of the MCT faults becomes essential in order to minimize the maintenance cost and ensure the continuity of the electricity production.…”

Section: Introductionmentioning

confidence: 99%

State-of-the-Art on the Marine Current Turbine System Faults

Toumi¹,

Benbouzid²,

Mimouni³

2023

Exergy - New Technologies and Applications

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This chapter deals with the state of the art on the marine current turbine (MCT) system faults. Indeed, the MCT structure consists of a marine turbine, a generator (permanent magnet synchronous generator (PMSG) or doubly fed induction generator (DFIG)), and a PWM power converter. Nevertheless, these systems are exposed to functional and environmental severe conditions. Firstly, the power increase leads to a higher current and/or voltage. Second, the installation of the MCT system under the sea and the existence of the swell and wave imply harmonic current speeds. In fact, several faults (related to the turbine, the generator, the blades, and the converters) can occur in the MCT system. Most of these faults generate the speed and the torque oscillations, which can lead to mechanical vibrations and the rapid destruction of the insulating material generator. Consequently, MCT system performances can be degraded.

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“…However, the parameter changes and uncertainties have not been incorporated in the controller design. A magnetic equivalent circuit method-based second-order sliding mode is proposed in [10], however, external disturbances and parameter changes have not been considered in the design process. In order to extract the maximum power from the tidal current under large parametric uncertainties and nonlinearities, a nonlinear observer-based second-order SMC combined with a predictive control was developed in [11].…”

Section: Introductionmentioning

confidence: 99%

Intelligent Energy-Based Modified Super Twisting Algorithm and Factional Order PID Control for Performance Improvement of PMSG Dedicated to Tidal Power System

et al. 2021

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The majority of marine current conversion technologies are based on permanent magnet synchronous generators (PMSG) due to its numerous advantages such as high-power density, low cost, and favorable electricity production. However, nonlinear properties of the generator and parameter uncertainties, makes the controller design more than a simple challenge. This paper proposes a new adaptive passivity-based (PB) modified super twisting algorithm (PBSTA) for control performance improvement (low tracing errors, fast convergence response, robustness) of a PMSG based marine current energy conversion system under swell effect and parameter uncertainties. The proposed approach combines a new PB current control (PBCC) with a new adaptive modified super twisting algorithm through a fuzzy logic supervisor. A new adaptive fractional order PID (FO-PID) controller is introduced to design the desired dynamics of the system. The main contributions and motivation of this work include the extraction of maximum power from the tidal current, integrating it to the grid and making the closed loop system passive. This is possible by reshaping system energy and introducing a damping term that compensates the nonlinear terms by a damped way and not by cancellation. Two steps are needed to design the proposed controller: the first step includes the derivation of reference current based on the reference torque using adaptive FO-PID. In the second step, the overall control law is computed by the proposed PBSTA. The exponential stability and error convergence of the proposed controller are analytically proven. The developed controller is tested under parameter variations and it is compared to benchmark nonlinear control methods such as sliding mode. Extensive investigation under MATLAB/Simulink, demonstrates clearly that the proposed technique provides higher efficiency and robustness over the benchmark nonlinear control methods.

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Magnet failure-resilient control of a direct-drive tidal turbine

Cited by 20 publications

References 26 publications

Energy-Based Combined Nonlinear Observer and Voltage Controller for a PMSG Using Fuzzy Supervisor High Order Sliding Mode in a Marine Current Power System

Energy-Based Combined Nonlinear Observer and Voltage Controller for a PMSG Using Fuzzy Supervisor High Order Sliding Mode in a Marine Current Power System

State-of-the-Art on the Marine Current Turbine System Faults

Intelligent Energy-Based Modified Super Twisting Algorithm and Factional Order PID Control for Performance Improvement of PMSG Dedicated to Tidal Power System

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