Robust Nonlinear State Feedback Control of Bidirectional Interlink Power Converters in Grid-Connected Hybrid Microgrids

Zolfaghari, Mahdi; Abedi, Mehrdad; Gharehpetian, Gevork B.

doi:10.1109/jsyst.2019.2919551

Cited by 25 publications

(21 citation statements)

References 26 publications

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“…If the rudder compound faults occur and estimation error is ignored, according to (83) and (6), the controller satisfies:…”

Section: Hybrid Ftcmentioning

confidence: 99%

“…Nonlinear problems have multiple control schemes. In [6], the range of a nonlinear input function was set between two linear function values, converted the nonlinear stability proof into a linear proof. In [7], the Takagi-Sugeno (T-S) fuzzy system is a strong linearisation method; by "blending" local linear system models, it has the advantage of universal approximation for any nonlinear function [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…..., bjm], bji∈R n×1 , 1≤i≤m, fs,tvs is the function of the sth RADF in(6). The observer (42) are designed to isolate RADF.…”

mentioning

confidence: 99%

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Hybrid Adaptive Fault-Tolerant Control for Compound Faults of Hypersonic Vehicle

Cheng

2021

IEEE Access

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This study investigates the hybrid fault-tolerant control (FTC) for hypersonic flight vehicles (HFVs) under the rudder structure fault (RSF) and rudder angle deviation fault (RADF). The nonlinear equations of the model are linearised by fuzzy logic, the external nonlinear disturbance is approximated by radial basis functions, which transforms the classical HFV into a linear system. In the case of only a RSF, the state feedback system can passively shield the fault using a compensation function and design a threshold to create conditions for RADF detection. During the RSF and RADF compound faults, the system with an adaptive observer implements angle deviation fault isolation/estimation and shields the structural fault. By using the estimation results, active-passive hybrid compensation completes passive FTC of the structural fault and active FTC of the angle deviation fault. The adaptive learning rates that mimic animal predatory behaviour increase the sensitivity to incipient deviation of RADF and improve compensation. Lyapunov method proves the stability and semi-physical simulation shows the control efficiency.

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“…If the rudder compound faults occur and estimation error is ignored, according to (83) and (6), the controller satisfies:…”

Section: Hybrid Ftcmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hybrid Adaptive Fault-Tolerant Control for Compound Faults of Hypersonic Vehicle

Cheng

2021

IEEE Access

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“…Considering an islanded microgrid, Wang et al [6] have developed an event-triggered secondary control algorithm for microgrids. As reported, the hybrid microgrids, which are a combination of ac and dc microgrids, are the most dominant type structures that will be used in future smart grids [7]. A hybrid microgrid includes at least two microgrids that conventionally have been connected together using parallel-connected interlink power converters (ILCs) to exchange power.…”

Section: Introductionmentioning

confidence: 99%

“…In [17], a perturbation observer based multiloop control scheme has been presented for the doubly-fed induction generator-wind turbine (DFIG-WT) in multimachine power systems. More recently, a new observer-based control scheme for dc link control of power converters has been proposed in [7], [18], and [19].…”

Section: Introductionmentioning

confidence: 99%

Quasi-Luenberger Observer-Based Robust DC Link Control of UIPC for Flexible Power Exchange Control in Hybrid Microgrids

Zolfaghari

Gharehpetian

Anvari‐Moghaddam

2021

IEEE Systems Journal

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This work illustrates the application of an observerbased robust control of unified interphase power controller (UIPC) for power flow control between interconnected microgrids in hybrid microgrids. Here, the challenges of UIPC control in heterogeneous structure of hybrid microgrid are addressed, and a new control scheme for UIPC is proposed. In the proposed control scheme, the states of the UIPC dc link nonlinear dynamics are estimated using a Quasi-Luenberger observer. Then, the estimated states are implemented in a robust sliding mode controller that alleviates the effect of disturbances on the dc link dynamics and effectively controls the dc side power converter of the UIPC. The simulation results and comparison studies are provided to validate the efficacy of the proposed control scheme for hybrid microgrid.

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Decentralized power exchange control methods among subsystems in future power network

Zolfaghari

Gharehpetian

2022

Decentralized Frameworks for Future Power Systems

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Robust Nonlinear State Feedback Control of Bidirectional Interlink Power Converters in Grid-Connected Hybrid Microgrids

Cited by 25 publications

References 26 publications

Hybrid Adaptive Fault-Tolerant Control for Compound Faults of Hypersonic Vehicle

Hybrid Adaptive Fault-Tolerant Control for Compound Faults of Hypersonic Vehicle

Quasi-Luenberger Observer-Based Robust DC Link Control of UIPC for Flexible Power Exchange Control in Hybrid Microgrids

Decentralized power exchange control methods among subsystems in future power network

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