Design of modulation controllers for AC/DC power systems

Badran, Saeed M.; Choudhry, M.A.

doi:10.1109/59.260950

Cited by 25 publications

(12 citation statements)

References 12 publications

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“…In this paper, the of a linearized system model [2]. In the event of large novel nonlinear robust adaptive control method proposed in disturbances, the system dynamic performance may be [10] is applied to power modulation control in ac/dc undesirable, and the controller may be incapable of providing interconnected systems to improve the inter-area stability of ac/dc interconnected systems.…”

Section: Introductionmentioning

confidence: 99%

“…The idea behind this control design is to drive the centers of inertia (COI) of the different The concept of center of inertia (COI) is then adopted from receiving areas is no longer related, and the controller also [18] and the COI angle and speed in Area 1 of N machines are becomes insensitive to the system topology. Secondly, the defined as: proposed controller design provides the capability to adapt to 1N changes in system equilibrium point, which is an essential gcoiM (2) expressed as: In this paper, the COI-dynamic-signal-based control law for 8 = dc power modulation control is designed for a multi-infeed N (3)…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear Robust Adaptive Control Design for Dc Power Modulation in Multi Area AC/DC Power Systems

Poon

Zhu

Cai

et al. 2006

2006 38th North American Power Symposium

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decent response to ensure stability. In order to solve these Abstract-A nonlinear robust adaptive controller for dc power problems, there has been a great deal of research in the modulation of interconnected ac/dc power systems is proposed application of nonlinear control theories in power system and is used to damp tie line power oscillations in interconnected control, and the most established ones include applications of power systems. The design idea is to drive the centers of inertia robust control theory and differential geometric theories. In the (COI) of various interconnected areas to a stable equilibrium application of differential geometric theory, nonlinear systems point such that the oscillations in the system can be damped out.. . 'Genetic algorithm is applied to optimize the parameters of the ar transf ormedinlearpones such that various existing proposed controller, and computer test results illustrate that the linear control theories can be applied [3]- [5]. The drawbacks of proposed controller is superior to the conventional linear dc such an approach are that exact knowledge of the mathematical power modulation controller.. model of the studied system is required, and uncertainties such Index Terms-Center of Inertia, Genetic Algorithm, HVDC as model errors and disturbances are neglected. Robust control transmission, Nonlinear robust adaptive control, Power system. theories have been proposed to solve such problems and to enhance the robustness of control methods in power systems

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nonlinear Robust Adaptive Control Design for Dc Power Modulation in Multi Area AC/DC Power Systems

Poon

Zhu

Cai

et al. 2006

2006 38th North American Power Symposium

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“…The provision of appropriate supplementary damping control of the classical HVDC system provides modulation of power flow through the HVDC link and effectively mitigates inter-area oscillations of interconnected power systems [8]. Recently, extensive research has been carried out to propose Power Oscillation Damping (POD) controllers applying classical control theory, optimal control schemes, robust control methods and the feedback linearization technique [9][10][11][12][13][14][15][16]. Classical control theory-based POD controllers are designed with a first-order approximation of the system dynamics at a certain operating condition.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Conjugate Gradient Algorithms Applied to the Neuro-Fuzzy Feedback Linearization-Based Adaptive Control Paradigm for Multiple HVDC Links in AC/DC Power System

Ahmad

Khan

2017

Energies

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Abstract:The existing literature predominantly concentrates on the utilization of the gradient descent algorithm for control systems' design in power systems for stability enhancement. In this paper, various flavors of the Conjugate Gradient (CG) algorithm have been employed to design the online neuro-fuzzy linearization-based adaptive control strategy for Line Commutated Converters' (LCC) High Voltage Direct Current (HVDC) links embedded in a multi-machine test power system. The conjugate gradient algorithms are evaluated based on the damping of electro-mechanical oscillatory modes using MATLAB/Simulink. The results validate that all of the conjugate gradient algorithms have outperformed the gradient descent optimization scheme and other conventional and non-conventional control schemes.

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“…However, the derivation of strategies for controllers and the need for coordination among controllers are signal tasks [1][2][3]. Especially, a controller designed for one type of stability might have negative impacts on other types of stability.…”

Section: Introductionmentioning

confidence: 99%

A novel controller design for STATCOM based on the concept of area center of inertia

Zhu

Cai

et al. 2008

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies

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This paper proposes a novel controller for STATCOM to enhance the inter-area synchronous stability. The main idea of this controller comes from the concept of area-COI (center of inertia). The potential of area-COI as a unified signal for synchronous in large scale interconnected power systems is explored. This new controller uses areas-COI information and keeps them synchronous. Dynamic model based on area-COIcoordinate is derived first. Then the STATCOM control strategy is derived using back-stepping method. At last one simple 2-area-4-geneartor interconnected power system is used for performance tests. The simulation results show that the suggested the designed STATCOM controller based on area-COIcoordinate model works very well with superior performance compared with the conventional controller.

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Design of modulation controllers for AC/DC power systems

Cited by 25 publications

References 12 publications

Nonlinear Robust Adaptive Control Design for Dc Power Modulation in Multi Area AC/DC Power Systems

Nonlinear Robust Adaptive Control Design for Dc Power Modulation in Multi Area AC/DC Power Systems

Performance Analysis of Conjugate Gradient Algorithms Applied to the Neuro-Fuzzy Feedback Linearization-Based Adaptive Control Paradigm for Multiple HVDC Links in AC/DC Power System

A novel controller design for STATCOM based on the concept of area center of inertia

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