LADRC applied to variable speed micro-hydro plants: Experimental validation

Guo, Baoling; Bacha, Seddik; Alamir, Mazen; Mohamed, Amgad; Boudinet, Cédric

doi:10.1016/j.conengprac.2019.02.008

Cited by 46 publications

(21 citation statements)

References 17 publications

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“…(a1)-(a3) Balanced grid voltages. (b1)-(b3) Unbalanced grid voltages ESO-based controller can be tuned simply by following the parameters selection guidelines provided in the previous works [8,18,21].…”

Section: Discussionmentioning

confidence: 99%

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A phase-locked loop using ESO-based loop filter for grid-connected converter: performance analysis

Guo

Bacha

Alamir

et al. 2021

Control Theory Technol.

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An extended state observer (ESO)-based loop filter is designed for the phase-locked loop (PLL) involved in a disturbed grid-connected converter (GcC). This ESO-based design enhances the performances and robustness of the PLL, and, therefore, improves control performances of the disturbed GcCs. Besides, the ESO-based LF can be applied to PLLs with extra filters for abnormal grid conditions. The unbalanced grid is particularly taken into account for the performance analysis. A tuning approach based on the well-designed PI controller is discussed, which results in a fair comparison with conventional PI-type PLLs. The frequency domain properties are quantitatively analysed with respect to the control stability and the noises rejection. The frequency domain analysis and simulation results suggest that the performances of the generated ESO-based controllers are comparable to those of the PI control at low frequency, while have better ability to attenuate high-frequency measurement noises. The phase margin decreases slightly, but remains acceptable. Finally, experimental tests are conducted with a hybrid power hardware-in-the-loop benchmark, in which balanced/unbalanced cases are both explored. The obtained results prove the effectiveness of ESO-based PLLs when applied to the disturbed GcC.

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Section: Discussionmentioning

confidence: 99%

“…The previous works commonly compare the ESO-based controller with PI controllers to verify its effectiveness [21][22][23]. The critical point is to determine under which conditions, the comparison might be viewed as fair.…”

Section: Introductionmentioning

confidence: 99%

A phase-locked loop using ESO-based loop filter for grid-connected converter: performance analysis

Guo

Bacha

Alamir

et al. 2021

Control Theory Technol.

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“…More details on convergence analysis, stability analysis, and tuning methods can be found in [4], [7], [34], and [35].…”

Section: B Eso-based Srf-pll Design Principles and Its Limitationsmentioning

confidence: 99%

“…1) First, regarding parameters ω c and ω 0 , similar tuning rules discussed in [4] and [7] can be followed. 2) Then, ω ri is chosen by adapting to frequencies of the present sinusoidal disturbances, and k ri is tuned to ensure both the estimation precision and the stability.…”

Section: Parameter Selection Guidelinesmentioning

confidence: 99%

Generalized Integrator-Extended State Observer With Applications to Grid-Connected Converters in the Presence of Disturbances

Guo

Bacha

Alamir

et al. 2021

IEEE Trans. Contr. Syst. Technol.

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Large-scale fast-varying sinusoidal disturbances (FVSDs) strongly impact the operation of Grid-connected Converters (GcCs). A conventional extended state observer (ESO) is not sufficiently capable to deal with these rapid disturbances. This critical weakness has limited ESO's applications to GcCs. Therefore, a generalized integrator-ESO (GI-ESO) is developed from ESO to address such issues. Knowing that grid common disturbances can be expressed as a phase, frequency, or magnitude disturbed sinusoidal signal, multi-GIs of selective resonant frequencies are, hence, applied into the disturbance estimation loop, which enables FVSD to be observed with relatively low bandwidth. Besides, a frequency-adaptive mechanism is introduced in order to mitigate the effects of frequency deviations. The proposed GI-ESO resolves the tradeoff between the observer's bandwidth and noise filtering. A case of the three-phase phase-locked loop control system of disturbed regimes is, in particular, studied to assess the performance of GI-ESO and the stability of the resulting controlled system. Theoretical analysis and experimental results have proven its effectiveness in applications to GcCs in the presence of various disturbances.

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“…An effective and weak model-dependent control strategy, which has a similar framework of the PID controller, is desired to regulate the attitude in reality. Recently, active disturbance rejection control (ADRC) [27,28], as an extension of traditional PID controller, has been widely used in industrial applications [29][30][31][32][33][34][35][36][37][38], and flight control is possibly the most active arena of ADRC [15,[38][39][40][41][42]. In the design, the ADRC only needs an open-loop control gain, which can be obtained relatively accurately than other characteristic parameters and can significantly reduce difficulty of modelling.…”

Section: Introductionmentioning

confidence: 99%

Practical Energy Dissipation Control of Near Space Glider on Independent Longitudinal Plane

Chen¹,

Wang²,

Sun

et al. 2020

International Journal of Aerospace Engineering

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The near-space hypersonic aerodynamic glider has strong maneuverability in wide flight envelope. The glide is generally achieved in a smooth manner with no or weak altitude oscillations in the altitude. The maximum lift-to-drag ratio glide is a typical trajectory that can approximate the maximum glide range, which is a crucial indicator for a glider. However, another important indicator, the minimum glide range, which is used in some time-sensitive missions and is expected to reduce the velocity to a specified threshold in a short longitudinal range, is difficult to be realized. In practice, the excessive velocity or energy is usually dissipated during lateral manipulation, wherein either the entire glide range or the glide time is not shortened. An innovative guidance strategy is proposed for achieving the minimum glide range based on a typical maximum glide scheme and bang-bang control scheme only on the longitudinal plane, and the flight time can be reduced considerably. Then, a practical extended state observer based pitch control is utilized to efficiently track the bang-bang command within a wide velocity envelope to achieve the guidance objective. Extensive simulation results demonstrate the effectiveness of the proposed methods.

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LADRC applied to variable speed micro-hydro plants: Experimental validation

Cited by 46 publications

References 17 publications

A phase-locked loop using ESO-based loop filter for grid-connected converter: performance analysis

A phase-locked loop using ESO-based loop filter for grid-connected converter: performance analysis

Generalized Integrator-Extended State Observer With Applications to Grid-Connected Converters in the Presence of Disturbances

Practical Energy Dissipation Control of Near Space Glider on Independent Longitudinal Plane

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