Dual Closed-Loop Linear Active Disturbance Rejection Control of Grid-Side Converter of Permanent Magnet Direct-Drive Wind Turbine

Ma, Youjie; Xia, Yang; Zhou, Xuesong; Yang, Luyong; Zhou, Yongliang

doi:10.3390/en13051090

Cited by 10 publications

(5 citation statements)

References 19 publications

(29 reference statements)

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“…. Besides, the PI control parameters are selected by combining the optimal pole placement method in [30], which can guarantee a good trade-off between tracking and disturbance rejection.…”

Section: Resultsmentioning

confidence: 99%

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DC-Link Voltage Research of Photovoltaic Grid-Connected Inverter Using Improved Active Disturbance Rejection Control

Zhou

Liu

et al. 2021

IEEE Access

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In this paper, a robust DC-link voltage control scheme is proposed to improve the tolerance of photovoltaic (PV) grid-connected inverter to disturbances. The sensitive characteristic of the DC-link voltage complicates the dynamics of the inverter control system and limits its overall performance, especially when uncertain disturbances are considered. To cope with this issue, a voltage controller based on the linear active disturbance rejection control (LADRC) is designed. By exploring the principle of deviation regulation, an improved linear extended state observer (LESO) is established to ensure that the total disturbance can be estimated in a relatively timely manner. The linear state error feedback (LSEF) control law is generated to compensate for the total disturbance, which reduces the plant to approximate the canonical cascaded double integrator. The stability and disturbance rejection capability of the improved LADRC are further analyzed in frequency domain. Finally, theoretical analysis and experimental results confirm the feasibility of the proposed control scheme.INDEX TERMS Photovoltaic (PV) grid-connected inverter, DC-link voltage, linear active disturbance rejection control (LADRC), deviation regulation, total disturbance.

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“…. Besides, the PI control parameters are selected by combining the optimal pole placement method in [30], which can guarantee a good trade-off between tracking and disturbance rejection.…”

Section: Resultsmentioning

confidence: 99%

“…Using the PI control parameter configuration method of the inner loop in [30], the d-axis current transfer function can be approximated to an inertial link, 1/(3 1) Ts+ . Considering this fact, the LADRC-based voltage outer loop control block diagram is given in Fig.…”

Section: The Reference Frequency and Phase For Performing Parkmentioning

confidence: 99%

DC-Link Voltage Research of Photovoltaic Grid-Connected Inverter Using Improved Active Disturbance Rejection Control

Zhou

Liu

et al. 2021

IEEE Access

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“…Under usual working conditions, the GSC maintains a constant voltage at the dc-link and also maintains the needed power factor at the grid, by suitably controlling the active and reactive power. A widely used control structure for GSC control is derived from [27][28][29][30][31] and the control configuration is as depicted in Figure 3. In Figure 3, V bus and V bus * represent the dc-link voltage and its reference value, respectively, whereas θ grid represents the phase angle extracted from the grid voltages using a phase-locked loop.…”

Section: Grid Side Converter Controlmentioning

confidence: 99%

Coordinated Control of Wind Energy Conversion System during Unsymmetrical Fault at Grid

Ahuja

Singh²,

Sharma

et al. 2022

Energies

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High penetration of wind power into the grid necessitates the coordinated action of wind energy conversion systems and the grid. A suitable generation control is required to fulfill the grid integration requirements, especially during faults. A system using a pair of voltage source converters with a squirrel cage induction generator coupled to a wind turbine is proposed to provide fault ride-through during grid faults. A threefold action is used for providing the effective fault ride-through via coordinated action of the machine side and the grid side converter. The entire wind energy conversion system is controlled such that the wind turbine remains connected even during the faults. To implement the threefold action: (i) A decoupled current controller is placed in the grid side converter, which separately controls the positive and negative sequence currents arising during faults. The grid side converter controller is capable of eliminating the double frequency oscillations at the dc-link voltage and, hence, real power, which arises during the unsymmetrical faults; (ii) Reactive power injection is additionally provided by the grid side converter for better grid support; and (iii) The vector control technique is used in machine side converter along with the droop control to adjust the generator speed and the torque resulting in actuation of the pitch control mechanism to limit power generation without shutdown of the turbine.

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“…i is the given current of the system i d_re f . Then the LADRC of the d-axis of the inner current loop is [20,21]:…”

Section: Design Of Current Inner Loop Controllermentioning

confidence: 99%

Research on D-STATCOM Double Closed-Loop Control Method Based on Improved First-Order Linear Active Disturbance Rejection Technology

Sun

Zhou

2020

Energies

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The application of a distribution static synchronous compensator (D-STATCOM) is the best technical means to solve the problem of reactive power compensation and harmonics. The D-STATCOM system has the characteristics of variable parameters, strong coupling, nonlinearity and multi-variability. In order to improve the speed of the dynamic tracking response and anti-disturbance capability of the D-STATCOM, the article proposes an improved Linear Active Disturbance Rejection Controller (LADRC) based on the total disturbance deviation control method. Combined with double closed-loop control, the inner loop takes the current as the state variable, and the outer loop uses the DC side output voltage as the state variable to achieve robust stability of the D-STATCOM and controller output. The simulation results show that the improved LADRC is more stable than the traditional LADRC in controlling the DC voltage waveform of the compensator, reactive current tracking and reactive power compensation waveform when it is disturbed, which verifies the superiority and feasibility of the improved LADRC.

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Dual Closed-Loop Linear Active Disturbance Rejection Control of Grid-Side Converter of Permanent Magnet Direct-Drive Wind Turbine

Cited by 10 publications

References 19 publications

DC-Link Voltage Research of Photovoltaic Grid-Connected Inverter Using Improved Active Disturbance Rejection Control

DC-Link Voltage Research of Photovoltaic Grid-Connected Inverter Using Improved Active Disturbance Rejection Control

Coordinated Control of Wind Energy Conversion System during Unsymmetrical Fault at Grid

Research on D-STATCOM Double Closed-Loop Control Method Based on Improved First-Order Linear Active Disturbance Rejection Technology

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