Control of converter fed microgrid using fuzzy controller
10 Apr 2013-pp 1179-1184
TL;DR: In this paper, a fuzzy controller for voltage-frequency control scheme for microgrid in islanding operation is presented, which allows the voltage source converter (VSC) with standard inductor interface and dq-frame current control.
Abstract: This paper presents fuzzy controller for voltage-frequency control scheme for microgrid in islanding operation. The proposed scheme of fuzzy based voltage-power/frequencyre-active power (VP/FQ) sets the real power output to regulate the microgrid voltage and the reactive power output to regulate the frequency. This supervisory control scheme allows the voltage source converter(VSC) with standard inductor interface and dq-frame current control in islanding mode in the instantaneous synchronization operation. The results demonstrate that the proposed approach perfume well and has a significance for the control of inverters in microgrid.
Citations
More filters
01 Dec 2015
TL;DR: Comparing the dynamic performances of PI and the fuzzy controllers through the study of the voltage and frequency control of the micro-grid under disturbances is compared to express and verify a much more capable, precise and robustness between these two types of controllers.
Abstract: This paper presents a study of the modelling and intelligent control of a stand-alone hybrid energy system based on solar-wind-diesel with battery. In this study as the proposed system operate in a standalone mode the power quality is expected to decrease by the fluctuations from each of the voltage and frequency with varying loads and each of the two renewable sources which have depended on the wind speed, and solar radiation and temperature. This can be solved, by controlling the Pulse Width Modulation (PWM) of Voltage Source Converter (VSC) as modelled with Battery Energy Storage System (BESS). Consequently, it is of great interest the operation and intelligent control of the aforementioned systems for certain normal, and abnormal operating conditions. Furthermore, the other aim of this work is to design this control by soft computing techniques such as fuzzy logic and PI controllers have been adopted in Matlab/Simulink to simulate the outcomes, and choosing a suitable controller with proposed modelling hybrid system, as more as robustness; By compare the dynamic performances of PI and the fuzzy controllers through the study of the voltage and frequency control of the micro-grid under disturbances, moreover, to express and verify a much more capable, precise and robustness between these two types of controllers to quickly repair and stabilize the micro-grid during events such as the islanding.
11 citations
01 Jan 2020
TL;DR: The use of a simple first-order non-iterative compensator used in a Brushless Direct Current drive-based position control system is extended to type 1 higher order systems to yield the desired frequency response specifications with lesser overshoot and settling time.
Abstract: Most of the real-time systems used in control applications are of higher order. Implementation of the controller requires dynamic and intelligent tuning to achieve the desired time response in control applications. An attempt is made in this article to extend the use of a simple first-order non-iterative compensator used in a Brushless Direct Current (BLDC) drive-based position control system to type 1 higher order systems. The compensator is found to yield the desired frequency response specifications with lesser overshoot and settling time than those of the conventional lag and lead compensators for various type 1 higher order systems.
7 citations
20 Jul 2019
TL;DR: The capabilities of this designed intelligent fuzzy control system on the stabilization of system voltage and frequency are tested under different operating conditions and compared to standard PID controllers.
Abstract: The aim of this paper is to study the modelling and intelligent fuzzy control of a stand-alone hybrid energy system based on solar-wind-diesel with battery. The renewable sources are major components of a standalone hybrid system as a combining photovoltaic with the wind turbine. Each component of these systems has been modelled and implemented in MATLAB/Simulink software. In order to improve power quality and reduce unwanted fluctuations of system quantities under different operating conditions an intelligent fuzzy control is proposed in this work. The capabilities of this designed intelligent control system on the stabilization of system voltage and frequency are tested under different operating conditions and compared to standard PID controllers. The superiority of the proposed intelligent fuzzy control system over PID controllers is demonstrated by the simulation benchmark tests.
5 citations
Cites background from "Control of converter fed microgrid ..."
...(2013) presented the dynamic model of an islanded micro-grid which was formulated in a reference frame instantaneously synchronized to the collector bus voltage [8]....
[...]
01 May 2019
TL;DR: The design of Fuzzy logic control applied to the outer loop of a voltage source converter, which is indispensable the integration of renewable sources and storage devices in a micro grid is proposed.
Abstract: This paper proposes the design of Fuzzy logic control applied to the outer loop of a voltage source converter, which is indispensable the integration of renewable sources and storage devices in a micro grid. The fuzzy logic method is implemented in non-linear, uncertain or non-stationary processes, since it is characterized by its ease incorporation of human experience and the understanding of its natural language. The general aim of this paper is focused on the detailed design of fuzzy logic control, considering the characteristics of the power converters. Finally, several tests is carried out to verify the proper functioning of the proposed fuzzy logic control, which is compared to a traditional PI control.
2 citations
Cites background or methods from "Control of converter fed microgrid ..."
...One of the main research topics focuses on distributed generation, where the control of a significant number of generators integrated into the electrical system becomes difficult [5]....
[...]
...As presented in the introduction section, fuzzy logic is widely applied as a control strategy [3], [5], [4], [9]....
[...]
2 citations
References
More filters
20 Jun 2004
TL;DR: In this article, the authors propose a system approach which views generation and associated loads as a subsystem or a "microgrid". During disturbances, the generation and corresponding loads can separate from the distribution system to isolate the microgrid's load from the disturbance (providing UPS services) without harming the transmission grid's integrity.
Abstract: Application of individual distributed generators can cause as many problems as it may solve. A better way to realize the emerging potential of distributed generation is to take a system approach which views generation and associated loads as a subsystem or a "microgrid". During disturbances, the generation and corresponding loads can separate from the distribution system to isolate the microgrid's load from the disturbance (providing UPS services) without harming the transmission grid's integrity. This ability to island generation and loads together has a potential to provide a higher local reliability than that provided by the power system as a whole. In this model it is also critical to be able to use the waste heat by placing the sources near the heat load. This implies that a unit can be placed at any point on the electrical system as required by the location of the heat load.
1,685 citations
"Control of converter fed microgrid ..." refers background in this paper
...In general commercial and industrial sensitive load needs high degree of power quality and reliability [2]....
[...]
TL;DR: In this article, a voltage-power droop/frequency-reactive power boost (VPD/FQB) control scheme was proposed to allow multiple voltage source converters (VSCs) to operate in parallel in a VSC fed microgrid.
Abstract: This paper presents a voltage-power droop/frequency-reactive power boost (VPD/FQB) control scheme that allows multiple voltage source converters (VSCs) to operate in parallel in a VSC fed microgrid Each current controlled VSC in such a microgrid has its own VPD/FQB controller that sets its current references to regulate the voltage and frequency of a common microgrid bus By drooping the voltage reference of each controller against its real power output, multiple VPD/FQB controllers jointly regulate the microgrid voltage while sharing a common load power in proportion to a predetermined ratio Similarly, by boosting the frequency reference of each controller against its reactive power output, multiple VPD/FQB controllers jointly regulate the microgrid frequency while sharing the reactive load in proportion to a predetermined ratio The proposed control scheme can also operate in grid connected mode Experimental results are provided to validate the VPD/FQB control scheme
447 citations
TL;DR: In this paper, the authors discuss the problem of parallel operating systems of voltage source inverters with other inverters or with the utility source and propose several methods for protection against failure.
Abstract: Parallel operating systems of voltage source inverters with other inverters or with the utility source are sensitive to disturbances from the load or other sources and can easily be damaged by overcurrent. Thus extremely careful attention should be given to the system design of parallel operating inverters. Types of system configuration, control methods, and means of protection against failure are summarized, and several methods are proposed. Features and problems of these systems are discussed. >
404 citations
"Control of converter fed microgrid ..." refers background in this paper
...Some UPSs have inner current loops to protect the switches [7] while others directly control the bridge terminal voltage to regulate the output voltage [8]....
[...]
TL;DR: In this article, a control scheme that exploits the controllability of inverters to operate a micro-grid and provide good power quality is examined and compared with both traditional power systems and with control of dc/dc power converters.
339 citations
"Control of converter fed microgrid ..." refers background in this paper
...A power-sharing control, such as droop control, can be implemented for dispatching the output power [4]....
[...]
25 Jul 2010
TL;DR: A voltage-power droop/frequency-reactive power boost (VPD/FQB) control scheme that allows multiple voltage source converters to operate in parallel in a VSC fed microgrid is presented.
Abstract: This paper presents a voltage-power droop/frequency-reactive power boost (VPD/FQB) control scheme that allows multiple voltage source converters (VSCs) to operate in parallel in a VSC fed microgrid. Each current controlled VSC in such a microgrid has its own VPD/FQB controller that sets its current references to regulate the voltage and frequency of a common microgrid bus. By drooping the voltage reference of each controller against its real power output, multiple VPD/FQB controllers jointly regulate the microgrid voltage while sharing a common load power in proportion to a predetermined ratio. Similarly, by boosting the frequency reference of each controller against its reactive power output, multiple VPD/FQB controllers jointly regulate the microgrid frequency while sharing the reactive load in proportion to a predetermined ratio. The proposed control scheme can also operate in grid connected mode. Experimental results are provided to validate the VPD/FQB control scheme.
288 citations