Robust Active Damping Control for LCL-Type Shunt Active Power Filters

Yang, Lei; Zhao, Lihang; Chen, Xinqi; Zhang, Zhebo; Nian, Heng; Zhao, Jianyong; Deng, Rongfeng; Liang, Yan

doi:10.1109/access.2022.3166598

Cited by 10 publications

(4 citation statements)

References 43 publications

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“…In addition to precise controller modeling, the controller's bandwidth is also influenced by the converter filter design of the SAF [32]. Previous researchers have designed the passive filter with consideration for the current ripple in the output of the SAF, ensuring the provision of necessary load harmonics while simultaneously mitigating switching harmonics, as indicated in references [30]- [32]. In [20], the passive filter is specifically designed to efficiently eliminate switching harmonics while ensuring no impedance is added to the load-demanded harmonics.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of Load Network Time Constant Computation Based Solar Active Power Filters Cum Injector for Industrial Loads/Grids

Reddy,

Gupta,

Sekhar

2024

IEEE Access

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This work proposes an efficient integration method of solar energy with industrial nonlinear loads, accounting for dynamic variations in solar power and load harmonic profiles. The involved dynamics necessitate that the solar interface front-end inverters be equipped to handle both harmonic distortions and active power injection characteristics simultaneously. In this work, an instantaneous load and source characteristic mapping is proposed for the solar-interfaced front-end inverter operated as a shunt active power filter cum active power injector in order to accommodate the dynamic variations of the source and load. As per requirement, to separate the load-demanded and switching harmonics, a new load network time constant-based passive filter design diverging from traditional passive filter design methods is demonstrated. Further, a comprehensive explanation of the current controller modeling methodology is elaborated, considering the essential bandwidth required for proficiently managing load-demanded harmonics in both grid injection and drawing modes of operation. Later, in grid injection mode, the influence of grid and system impedance interactions on the power quality is analyzed for weak grid scenarios to derive the requisite bandwidth conditions to ensure resilient power transfer. Subsequently, the experimental validation of the solar interfaced shunt active power filter (SISAPF) with active power injection capability is carried out in both grid power drawing and injection modes, demonstrating the effectiveness of the enhanced bandwidth in handling load-demanded harmonics and solar power dynamic variations.INDEX TERMS EV charging infrastructure, Load time constant, Non-linear loads, passive filter design, Shunt active filter, Solar Inverter, System bandwidth, Three-phase inverter.

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Section: Introductionmentioning

confidence: 99%

Design and Implementation of Load Network Time Constant Computation Based Solar Active Power Filters Cum Injector for Industrial Loads/Grids

Reddy,

Gupta,

Sekhar

2024

IEEE Access

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“…Literature [15][16] compares the performance and damping power loss of various passive damping methods with LCLtype SAPF. On the other hand, reference [17][18][19][20] proposes a filter-based single-loop active damping method that adjusts a bandstop filter at the resonance frequency in the control loop. This method achieves resonance damping by using the inverter side current as a proportional feedback inner loop control, providing inherent damping characteristics [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Novel resonance damping circuits for LCL type shunt active power filter

Chen

Xiao

2023

IEICE Electron. Express

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This paper proposes a novel damping method for the resonance problem of the LCL output filter in the active power filter (SAPF). The wide control bandwidth of the SAPF has made this problem critical. The proposed method is based on an active damping circuit, which does not affect SAPF control. It involves an auxiliary converter connected in series with a filter capacitor to detect and inject back the resonant current as the reference signal of the converter. The stability of the proposed method is analyzed using frequency response and compared to the traditional method to prove theoretical feasibility. The experimental results demonstrate the effectiveness of the proposed method, which has a better switching harmonic suppression effect compared to the traditional method.

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“…The robustness [9][10][11] of a control system refers to the ability of that control system to maintain stability and meet the performance indicators in the face of model uncertainty, external interference, and/or system changes. The robustness of a control system is a very important aspect in its design.…”

Section: Introductionmentioning

confidence: 99%

High-Order Modeling, Zeroing Dynamics Control, and Perturbations Rejection for Non-Linear Double-Holding Water Tank

et al. 2023

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The double-holding water tank system is a common non-linear control system that plays a crucial role in process control in the chemical industry. It consists of two cylindrical glass containers: the preset tank and the main tank. The main challenge in controlling this system is adjusting the main control valve to ensure that the actual liquid level of the main tank tracks the desired liquid level. This paper explores the zeroing dynamics (ZD) method and its application in tracking control. A non-linear model is developed for the double-holding water tank system, and the ZD method is used to design an effective controller (called the ZD controller) for tracking control. Additionally, the robustness of the double-holding water tank system in the presence of time-varying perturbations is investigated. In order to substantiate the effectiveness and robustness of the ZD controller, simulation experiments on four different tracking trajectories corresponding to four different practical situations, as well as an extra simulation experiment considering time-varying perturbations, are conducted. Furthermore, a comparative simulation experiment based on the backstepping method is conducted. The presented results successfully illustrate the feasibility and effectiveness of the ZD method for the tracking control of double-holding water tank systems.

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Robust Active Damping Control for LCL-Type Shunt Active Power Filters

Cited by 10 publications

References 43 publications

Design and Implementation of Load Network Time Constant Computation Based Solar Active Power Filters Cum Injector for Industrial Loads/Grids

Design and Implementation of Load Network Time Constant Computation Based Solar Active Power Filters Cum Injector for Industrial Loads/Grids

Novel resonance damping circuits for LCL type shunt active power filter

High-Order Modeling, Zeroing Dynamics Control, and Perturbations Rejection for Non-Linear Double-Holding Water Tank

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