Admittance Modeling and Stability Analysis of Grid-Connected Inverter With LADRC-PLL

Xie, Ze‐Ming; Chen, Yandong; Wu, Wenhua; Gong, Wenlan; Zhou, Leming; Zhou, Xiaoping; Guerrero, Josep M.

doi:10.1109/tie.2020.3044789

Cited by 30 publications

(6 citation statements)

References 31 publications

(38 reference statements)

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“…The simulation results show that LADRC has stronger anti-disturbance performance and better decoupling effect compared with PID. In Xie et al (2020), in order to improve the oscillation suppression ability of grid-connected inverters, LADRC is proposed to be applied to the phase-locked loop. The results show that compared with the proportional–integral controller, the grid-connected inverter using LADRC has better adaptability, robustness, and dynamic performance to the weak power grid.…”

Section: Introductionmentioning

confidence: 99%

Speed tracking control of high-speed train based on adaptive control and linear active disturbance rejection control

Xue

Zhao

et al. 2023

Transactions of the Institute of Measurement and Control

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This paper proposes a hybrid control scheme combining adaptive control (APC) and linear active disturbance rejection control (LADRC) to solve the high-speed train (HST) speed tracking control problem. First, in order to meet the actual operation of HST, a multi-mass point dynamic model with time-varying coefficients is established. Second, LADRC is proposed to control the speed of the train, and the anti-disturbance ability of the system is improved by estimating and compensating the total disturbance suffered by the carriage. Third, in order to compensate for the observation error caused by the bandwidth of the linear extended state observer, APC is introduced. The adaptive laws are set for LADRC and train time-varying coefficients, which can effectively eliminate the adverse effects of time-varying coefficients on train operation and improve the control performance of the controller. Meanwhile, the Lyapunov theory is used to prove the stability of the system. Finally, the simulation results show that the hybrid control is more effective in solving the problem of HST speed tracking.

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Section: Introductionmentioning

confidence: 99%

Speed tracking control of high-speed train based on adaptive control and linear active disturbance rejection control

Xue

Zhao

et al. 2023

Transactions of the Institute of Measurement and Control

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“…To address those stability issues led by the PLL, some research efforts have been made [17]- [21]. One solution is to modify the control scheme.…”

Section: Introductionmentioning

confidence: 99%

“…A more-stable enhanced PLL (MsEPLL) is developed in [20], which improves stability by adding additional nonlinear damping terms. A linear active disturbance rejection controller (LADRC)-based PLL is proposed in [21], enhancing the system damping under weak grid conditions. Although the above-mentioned solutions can improve the stability under adverse grid conditions, they all compromise on the design complexity and computation burden.…”

Section: Introductionmentioning

confidence: 99%

Admittance-Based Stability Analysis of Resistance-Emulating Controlled Grid-Connected Voltage Source Rectifiers

Han

Lin

et al. 2023

IEEE Trans. Ind. Electron.

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Due to low cost and high reliability, resistance-emulating control (REC) is an emerging approach for grid-connected voltage source rectifiers (VSRs). However, small-signal stability issues of the grid-connected VSR with REC are currently rarely studied. In this paper, the small-signal dq-admittance model of the grid-connected VSR with REC is first built and the small-signal stability superiority of the VSR with REC in weak-grid connection is revealed. First, a dq-admittance model of the grid-connected VSR with REC is established. The admittance characteristics of the grid-connected VSR with REC and the grid-connected VSR with traditional dual closed-loop control (DCC) are analyzed and compared. Then, the influence of short circuit ratio (SCR), voltage-loop bandwidth and the output power on the stability of the VSR with REC and DCC is analyzed based on the generalized Nyquist criterion. The stability comparison results indicate that the VSR with REC has better adaptability to the weak grid and can achieve a higher bandwidth at the voltage loop. Besides, it is found that the DCC controlled VSR is more suitable for light-load operation than the REC controlled VSR. Finally, the correctness of the analysis is verified by experiments.

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“…So far, many methods for suppressing the frequency coupling oscillations have been proposed [22]- [25], but most focus on 2-level grid-connected converters. A symmetric control strategy for the DC voltage controller and PLL is proposed in [22] to suppress the frequency coupling.…”

Section: Introductionmentioning

confidence: 99%

Linear Active Disturbance Rejection Control and Stability Analysis for Modular Multilevel Converters Under Weak Grid

Xu,

Gao,

et al. 2023

Journal of Modern Power Systems and Clean Energy

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The modular multilevel converters (MMCs) are popularly used in high-voltage direct current (HVDC) transmission systems. However, for the direct modulation based MMC, its complex internal dynamics and the interaction with the grid impedance would induce the frequency coupling effect, which may lead to instability issues， especially in the case of weak grid. To effectively suppress the sub-and super-synchronous oscillations, this paper proposes a linear active disturbance rejection control (LADRC) based MMC control strategy. The LADRC mainly consists of the linear extended state observer (LESO) and the linear state error feedback (LSEF). And it is a potential method to enhance the system stability margin, attributing to its high anti-interference capability and good tracking performance. Thereupon, the system small-signal impedance model considering frequency coupling is established. And the effect of the introduction of the LADRC on the system stability is further investigated using the Nyquist criterion. Particularly, the influences of key control parameters on the stability are discussed in detail. Meanwhile, the impact of LADRC on the transient performance is explored through closed-loop zero poles. Finally, the correctness of the theoretical analysis and the effectiveness of the proposed control strategy are verified via electromagnetic simulations.

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Admittance Modeling and Stability Analysis of Grid-Connected Inverter With LADRC-PLL

Cited by 30 publications

References 31 publications

Speed tracking control of high-speed train based on adaptive control and linear active disturbance rejection control

Speed tracking control of high-speed train based on adaptive control and linear active disturbance rejection control

Admittance-Based Stability Analysis of Resistance-Emulating Controlled Grid-Connected Voltage Source Rectifiers

Linear Active Disturbance Rejection Control and Stability Analysis for Modular Multilevel Converters Under Weak Grid

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