Inverter Control Analysis in a Microgrid Community Based on Droop  Control Strategy

Salehi, Navid; García, Herminio Martínez; Quesada, Guillermo Velasco; -Vilchez, Encarna García

doi:10.24084/repqj19.247

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…In typical functioning, the excitation controller and prime mover governor control and regulate the frequency and voltage output of an SG. The generator control system could handle the generator's output frequency and mechanical power output, while the excitation regulation system manages the generator's reactive power and output voltage [30]. The main difference between the VSG and SG is that the excitation controllers and mechanical or electro-hydraulic governors are unnecessary.…”

Section: Droop Controlmentioning

confidence: 99%

Frequency response of microgrids with PV power generation and energy storage system (battery and supercapacitor)

Hamzah Abdullah,

M. Al-Anbary,

Mahdi Hamad

et al. 2024

Bulletin EEI

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Since renewable energy sources (RES) have almost little inertia, an increase in their electricity might harm the power system's ability to run steadily and dependably. Numerous solutions to the issue mentioned above are offered. This paper aims to assess the technological possibility of using energy storage system (ESS) devices built from batteries and supercapacitors to enhance the interia response of sources in microgrids with a large amount of PV power penetration. The microgrid's inertia was altered by varying the penetration level of RES. To obtain a rigid microgrid, batteries and supercapacitors are suggested in this study to enhance frequency stability and droop control is utilized to complete this assessment. The model of the on-grid power network was designed using Simulink in MATLAB to evaluate the high level of RES penetration impact on the frequency stability of the system. Results verify that the microgrid stiffness is significantly enhanced when the suggested storage elements are incorporated. The findings show that the rate of change of frequency (RoCoF) is reduced when the size of the ESS increases and vice versa. The supercapacitor energy storage system (SCESS) can increase the stability of the system's frequency more effectively than the battery energy storage systems (BESS) with a slower time response.

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Section: Droop Controlmentioning

confidence: 99%

Frequency response of microgrids with PV power generation and energy storage system (battery and supercapacitor)

Hamzah Abdullah,

M. Al-Anbary,

Mahdi Hamad

et al. 2024

Bulletin EEI

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“…They require a good control system to keep frequency and voltage outputs constant in spite of changing user loads [3]. Frequency stability is the most critical issue in isolated power systems due to their low rotational inertia [5,6]. Hence, maintaining frequency within a certain range is indeed a challenge [7,8].…”

Section: Introductionmentioning

confidence: 99%

Improvements in Frequency Control of an AC Microgrid by Means of Micro-Hydropower Combined Flow-Reduced Dump Load Control Method

Pupo¹,

García²,

García-Vílchez³

et al. 2024

RE&PQJ

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Load Frequency Control (LFC) is an issue of top importance to ensure microgrids (MGs) safe and reliable operation in AC MGs. Primary frequency control of each energy source can be guaranteed in AC MGs in order to integrate other energy sources. This paper proposes a micro-hydro frequency control scheme, combining the control of a reduced dump load and the nozzle flow control of Pelton turbines operating in isolated from electricity grid. Some researchs have reported the integration of dump load and flow control methods, but they did not reduce the dump load value and adjust the nozzle flow linearly to the power value demanded by users, causing the inefficient use of water. Simulation results were obtained in Matlab®/Simulink® using models obtained from previous research and proven by means of experimental studies. The simulation of the proposed scheme shows that instantaneous frequency variation is about 2 % even for perturbations magnitude up to 12 %. The validation result shows a 60 % reduction in overshoot and settling time of frequency temporal behaviour operating the micro-hydro autonomously.

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Deduction and Application of the Average Switch Model in Power Electronic Devices for Simulation Time Reduction

Benavides-Córdoba,

Romero-Carvajal,

Muñoz-Galeano

et al. 2024

Ing.

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Context: Time is a crucial issue in the simulation of power electronics (PE) devices, even more when these elements are integrated into microgrids.Method: This paper deals with the deduction of the average switch model for PE devices with the purpose of reducing simulation times. For doing this, the average model is only applied over the power switches of PE devices, not being applied over the complete topology as traditionally done. The proposed average model switch permits eliminating the ripple of voltage and currents but keeping the transient of the signals. The average model switch is derived for Boost and Buck converter switches and then generalized to power inverter switches. The proposed approach is validated using OpenModelica software.Results: A system featuring a battery, a DC/DC converter, and an inverter connected to the power grid was simulated. A comparison was performed between a simulation that considers the power switches and a simulation that uses the proposed average model switch, the time simulation was reduced up to 99.788 %, which validates the proposed approach.Conclusions: The proposed average switch model significantly reduces simulation times. This method offers a promising way to streamline power electronics device simulations, particularly in the context of microgrids and other applications where time efficiency is critical.

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Inverter Control Analysis in a Microgrid Community Based on Droop Control Strategy

Cited by 4 publications

References 12 publications

Frequency response of microgrids with PV power generation and energy storage system (battery and supercapacitor)

Frequency response of microgrids with PV power generation and energy storage system (battery and supercapacitor)

Improvements in Frequency Control of an AC Microgrid by Means of Micro-Hydropower Combined Flow-Reduced Dump Load Control Method

Deduction and Application of the Average Switch Model in Power Electronic Devices for Simulation Time Reduction

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