Hierarchical control for flexible microgrid based on three-phase voltage source inverters operated in parallel

Ziouani, Islam; Boukhetala, Djamel; Darcherif, Abdelmoumen; Amghar, Bilal; Abbassi, Ikram El

doi:10.1016/j.ijepes.2017.08.027

Cited by 56 publications

(42 citation statements)

References 27 publications

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“…Some major control strategies which have applied the power electronic systems in past decades are hysteresis control, adaptive fuzzy logic control, PI control, model predictive control (MPC), robust control and so on. [26][27][28][29][30][31][32][33][34] In most of the research studies, [29][30][31][32][33][34] PI and PID controllers are implemented to control the three-phase PWM VSI for the reason that PI and PID controllers are simple and convenient and widely implemented in industrial applications. In recent times, with the development of computer technology, and many advantages of FO controls, the use of the generalized form of PI and PID controllers which are FOPI and FOPID is becoming widespread instead of the classical PI and PID controllers.…”

Section: Methodsmentioning

confidence: 99%

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Application of fractional-order voltage controller in building-integrated photovoltaic and wind turbine system

Gül

Tan

2019

Measurement and Control

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The share of electricity generation based on clean, inexhaustible and continuous energy sources, such as solar and wind, in total energy production, is rising day by day due to its significant advantages such as having the less negative impact on global climate and environmental pollution and not requiring fuel for energy production. It is reported that commercial and residential buildings correspond to about 20.1% of the world energy consumption, so it is necessary to provide energy needs of buildings with hybrid renewable energy systems. When using non-continuous energy sources such as solar panel and wind turbines, it is important to ensure ensuring a stable and quality power flow to the building while the power demands of building show very sharp variability. This work presents a voltage control system using fractional-order operators in the smart residential building-integrated hybrid renewable power plant (solar + wind). In this research article, fractional-order proportional–integral/proportional–integral–derivative controllers are proposed on a synchronous frame for a pulse-width modulation based three-phase voltage source inverter in residential building-integrated solar panel and wind turbines system (building-integrated photovoltaic/wind turbine system) in order to improve the quality of injected voltage to building. When comparing the effect of closed-loop voltage control system with integer order controllers (proportional–integral and proportional–integral–derivative) on the power quality at the building distribution by analyzing the simulation results for proposed case study, use of fractional-order voltage controllers for nonlinear system such as building integrated with hybrid renewable sources is more suitable than using integer order voltage controllers.

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Section: Methodsmentioning

confidence: 99%

“…The coefficients of PID controller (K p , K i and K d ) can be calculated from equations (28), (30) and (31)…”

Section: Mathematical Model Of Bipv/wt Systemmentioning

confidence: 99%

Application of fractional-order voltage controller in building-integrated photovoltaic and wind turbine system

Gül

Tan

2019

Measurement and Control

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“…The conventional approach to address the aforementioned control challenges is to divide it into four main categories namely; inner-control, primary, secondary and tertiary control [7], [8]. The inner-control is the local control of the inverter that provides the current, voltage, output impedance regulation, and synchronization with the grid.…”

Section: Introductionmentioning

confidence: 99%

Multi-Renewable Energy Agent Based Control for Economic Dispatch and Frequency Regulation of Autonomous Renewable Grid

et al. 2020

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This paper addresses frequency regulation and the economic dispatch problem of an Autonomous Renewable Grid (ARG) primarily composed of Multi Renewable Energy Agents (MRAs), interfaced through DC/AC inverters. A large number of MRAs that have an inherent fluctuating nature and frequent disturbances in interconnected systems require fast and robust control to stabilize the frequency and to maintain cost-effective operation of an ARG. To address the above control challenges, Distributed Averaging Integrator (DAI) based control schemes were proposed in various research works. The main flaws of such schemes were slow convergence, sluggish response, poor transient performance and a difficult selection of an appropriate damping-factor. The proposed approach introduces a Distributed Sliding Mode Control (DSMC) based solution for fast convergence and improved transient response. The DSMC control is based on a distributed sliding surface, designed using a combination of local information and information from neighboring MRAs. The control is implemented locally at each MRA and achieves the asymptotic global consensus. Finally, the convergence of the proposed control scheme is proved mathematically, and performance is validated using the MRA system which has been implemented using MATLAB/Simulink. The results of the proposed control technique are compared with conventional DAI control, which shows that the proposed scheme outperforms the conventional scheme in terms of fast convergence, considering renewable resources as distributed generation.

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“…Microgrids control requirements and strategies to perform local balancing and to maximize their benefits have led the MGs to fulfill a wide range of functionalities, such as power flow control to avoid exceeding line capacities, voltage and frequency regulation, energy balance, among others [18], [23]- [25]. In this way, practical MGs include hierarchical control schemes to achieve the desired operational requirements.…”

Section: Introductionmentioning

confidence: 99%

Power flow modeling of islanded AC microgrids with hierarchical control

Tinajero

Segundo

Visairo

et al. 2019

International Journal of Electrical Power & Energy Systems

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This paper presents the power flow modeling of droop-controlled distributed generation units with secondary frequency and voltage restoration control for hierarchically controlled islanded microgrids. These models are incorporated in the conventional Newton-Raphson power flow method as a new bus, without the necessity of a slack bus, and include the gains of the control systems that influence the steady-state solution. Two case studies are addressed. In the first case study, comparisons of the proposed models against the steady-state solutions obtained with PSCAD and Simscape Power System of Simulink, where the closed-loop controls are explicitly modeled, are presented. In the second case study, the proposed method is contrasted against the droop-based approach. The results obtained exhibit low computing effort, reliability, and effectiveness of the proposed models since quadratic convergence behavior is maintained independently of the size and topology of the microgrid. Besides, it is demonstrated that hierarchical and droop controllers lead to different solutions, which confirms the necessity of including the hierarchical control in the power flow model.

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Hierarchical control for flexible microgrid based on three-phase voltage source inverters operated in parallel

Cited by 56 publications

References 27 publications

Application of fractional-order voltage controller in building-integrated photovoltaic and wind turbine system

Application of fractional-order voltage controller in building-integrated photovoltaic and wind turbine system

Multi-Renewable Energy Agent Based Control for Economic Dispatch and Frequency Regulation of Autonomous Renewable Grid

Power flow modeling of islanded AC microgrids with hierarchical control

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