Transient synchronization stability analysis of PLL-based VSC using Lyapunov’s direct method

Wang, Tong; Ji, Taipeng; Jiao, Dian; Li, Yongda; Wang, Zengping

doi:10.1016/j.ijepes.2022.108135

Cited by 13 publications

(2 citation statements)

References 27 publications

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“…To increase the efficiency of 1-Φ converters and make them more resilient in adverse grid conditions, [15] provides a control strategy for dampening the frequency coupling. A 1-Φ converter with an enhanced PLL block [16] is integrated into an extended current control loop in [17], providing reliability even under adverse grid conditions. Since 3-Φ converters often only use one PLL, this method might not be directly applicable.…”

Section: Introductionmentioning

confidence: 99%

Dynamic modelling and a dual vector modulated improved model predictive control with auto tuning feature of active front‐end converters for distributed energy resources

Debnath,

Gupta,

Kumar

et al. 2024

IET Generation Trans & Dist

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The operational performance of grid‐connected active front‐end converters (AFEs) faces challenges arising from the intricate interplay among phase‐locked loop (PLL) non‐linearities, grid impedance, and conventional control strategies, resulting in compromised stability. This study introduces a refined approach to dynamic model predictive control (MPC) by integrating recursive least squares (RLS) for the precise estimation of physical model parameters, thereby addressing stability concerns. Unlike conventional methodologies, the proposed enhanced RLS‐based MPC approach, equipped with an auto‐tuning feature, allows for the design of controllers without a prerequisite understanding of exact external dynamics. Notably, this technique exhibits exceptional disturbance rejection capabilities. The evaluation of the cost function at each sampling interval facilitates the determination of optimal switching states based on predicted variables. Gate pulses for the switches of the AFEs are generated accordingly. Employing a simulation platform, the proposed control structure's performance across varied conditions is comprehensively assessed, encompassing alterations in grid impedance and system non‐linearities. The method adeptly integrates inherent non‐linearities within the system, showcasing exceptional robustness in diverse dynamic scenarios. To further substantiate the efficacy of the proposed control system over conventional approaches, simulation results are validated using a laboratory hardware platform equipped with Typhoon HIL and dSPACE real‐time emulators, providing tangible evidence of the proposed control system's effectiveness in real‐world hardware setups. The multifaceted approach, encompassing precise parameter estimation, predictive control, auto‐tuning, disturbance rejection, robust design, and real‐time evaluation, collectively establishes a resilient foundation for enhancing and maintaining the overall stability of the system across diverse operating scenarios.

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Section: Introductionmentioning

confidence: 99%

Dynamic modelling and a dual vector modulated improved model predictive control with auto tuning feature of active front‐end converters for distributed energy resources

Debnath,

Gupta,

Kumar

et al. 2024

IET Generation Trans & Dist

View full text Add to dashboard Cite

show abstract

“…In [14], an improved equal area criterion was proposed to improve the accuracy by considering the nonlinear damping and study how the parameters influence the transient stability. In [15], [16], the Lyapunov's direct method was used to estimate the region of attraction. However, this method is difficult to be understood from the physical perspective.…”

Section: Introductionmentioning

confidence: 99%

Transient Stability Analysis and Enhancement of PLL-VSC Considering State-Dependent Damping

Xu,

Zhan

2023

IEEE Access

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As a typical power electronics interface device, the voltage source converter (VSC) usually uses phase-locked loop (PLL) to synchronize with the grid and its transient synchronous dynamics is complicated. Recently it is found that the PLL-VSC system can be described by a generalized swing equation which is similar to the swing equation for the synchronous generator. Differently it has a state-dependent damping term and the basin boundary of the stable operating point can show either a closed-loop or a fish-like pattern under different parameters. To deal with these difficulties, a trajectory reversing method is proposed to efficiently obtain the basin boundary of the post-fault stable operating point, and further the critical clearing angle and the associated critical clearing time. In addition, for the transient stability enhancement, an adaptive control strategy by varying equivalent PI controller parameters of PLL in terms of the system status is proposed. It is found that it can efficiently and quickly damp transient disturbances. Therefore, these two novel methods including the trajectory reversing method and the adaptive control method are expected to be valuable for transient stability analysis and enhancement of the PLL-VSC system.INDEX TERMS Voltage source converter, transient stability analysis, transient stability enhancement, statedependent damping, trajectory reversing method, adaptive control.

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Design & Implementation of High Speed and Low Power PLL Using GPDK 45 nm Technology

Badiger,

Iyer

2024

J. Inst. Eng. India Ser. B

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Transient synchronization stability analysis of PLL-based VSC using Lyapunov’s direct method

Cited by 13 publications

References 27 publications

Dynamic modelling and a dual vector modulated improved model predictive control with auto tuning feature of active front‐end converters for distributed energy resources

Dynamic modelling and a dual vector modulated improved model predictive control with auto tuning feature of active front‐end converters for distributed energy resources

Transient Stability Analysis and Enhancement of PLL-VSC Considering State-Dependent Damping

Design & Implementation of High Speed and Low Power PLL Using GPDK 45 nm Technology

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