Composite Nonlinear Feedback Control and Stability Analysis of a Grid-Connected Voltage Source Inverter With $LCL$ Filter

Eren, Suzan; Pahlevaninezhad, Majid; Bakhshai, Alireza; Jain, Praveen

doi:10.1109/tie.2012.2225399

Cited by 119 publications

(54 citation statements)

References 62 publications

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“…To minimize the number of sensors for multi-state feedback control, estimation algorithms should be used. Recently, studies in [76,77] and [78][79][80][81][82][83] separately gave some good examples for slide model control and full-state feedback control. Usually, sampling and control are implemented in digital signal processing (DSP).…”

Section: Implementation Costsmentioning

confidence: 99%

LCL-resonance damping strategies for grid-connected inverters with LCL filters: a comprehensive review

Xie

2017

J. Mod. Power Syst. Clean Energy

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Grid-connected LCL-filtered inverters are commonly used for distributed power generators. The LCL resonance should be treated properly. Recently, many strategies have been used to damp the resonance, but the relationships between different damping strategies have not been thoroughly investigated. Thus, this study analyses the essential mechanisms of LCL-resonance damping and reviews state-of-the-art resonance damping strategies. Existing resonance damping strategies are classified into those with single-state and multi-state feedback. Singlestate feedback strategies damp the LCL resonance using feedback of a voltage or current state at the resonance frequency. Multi-state feedback strategies are summarized as zero-placement and pole-placement strategies, where the zero-placement strategy configures the zeros of a novel state combined by multi-state feedback, while the poleplacement strategy aims to assign the closed-loop poles freely. Based on these mechanisms, an investigation of single-state and multi-state feedback is presented, including detailed comparisons of the existing strategies. Finally, some future research directions that can improve LCL-filtered inverter performance and minimize their implementation costs are summarized.

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Section: Implementation Costsmentioning

confidence: 99%

LCL-resonance damping strategies for grid-connected inverters with LCL filters: a comprehensive review

Xie

2017

J. Mod. Power Syst. Clean Energy

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“…Matrix P is calculated with Lyapunov equation (6) with a given positive definite matrix W [17]. Note also that both P, WED nxn •…”

Section: About P and Wmentioning

confidence: 99%

“…In [15] simulations are provided for the case of robust model following problem; whereas [16] discusses Terminal Sliding Mode Control with CNF. Transient response of inverter is improved in [17] using CNF. CNF further was applied in combination with Adaptive Back stepping control in a U tube Steam Generator [18].…”

Section: Introductionmentioning

confidence: 99%

Composite Nonlinear Feedback controller for Twin Rotor MIMO System

Kulkarni

Purwar

Sharma

2014

International Conference on Recent Advances and Innovations in Engineering (ICRAIE-2014)

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A standard Composite Nonlinear Feedback (CNF) control law is designed for Twin Rotor Multi-Input Multi-Output System (TRMS). This proposed control law ensures minimum settling time and no overshoot in the response to desired input. TRMS linear model is considered for simulation purpose. The control law is composed of linear and nonlinear components.There is no switching element in the proposed law. The effectiveness of the proposed controller is shown by simulation results.

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“…In this strategy, two capacitors are placed in parallel at the position of the capacitor in the LCL-filter, and the current between the two capacitors is measured as the feedback signal. In [11], the authors analyzed the generalized stability of a grid-connected VSI with an LCL-filter and proposed a control strategy to improve the transient and steady-state performance called composite nonlinear feedback. In [12][13], the authors analyzed and evaluated the applicability of each part of the overall control in a weak grid with the use of a stability criterion.…”

Section: Introductionmentioning

confidence: 99%

A Novel Method for Designing the Controller of a LCL-Filter-Based Grid-Connected Inverter With Considering Varying System Parameters

Nhan¹

2018

JST

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Exactly determining the control coefficients for the controller of a three-phase LCL-filterbased inverter is an important and challenging issue in microgrid systems. However, existing LCL-filter-based inverter systems usually assume that all system parameters are determined accurately and remain constant over time, which is not true in real situations. Variations in the system parameters are known to possibly seriously degrade the performance of LCL-filter-based inverter systems. For efficiency and robustness, this paper proposes a novel method for the generalized controller design of a three-phase LCL-filter-based grid-connected inverter system that can address deviations in system parameters. An optimum way to determine the stability bounds under various system parameters cases is introduced. The assessment of the stability bounds is based on the Routh criterion by solving the characteristic equation of the closed-loop control system. Simulations results are presented to validate the correctness and effectiveness of the proposed design method.

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Composite Nonlinear Feedback Control and Stability Analysis of a Grid-Connected Voltage Source Inverter With $LCL$ Filter

Cited by 119 publications

References 62 publications

LCL-resonance damping strategies for grid-connected inverters with LCL filters: a comprehensive review

LCL-resonance damping strategies for grid-connected inverters with LCL filters: a comprehensive review

Composite Nonlinear Feedback controller for Twin Rotor MIMO System

A Novel Method for Designing the Controller of a LCL-Filter-Based Grid-Connected Inverter With Considering Varying System Parameters

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