Minimizing Energy Storage Utilization in a Stand-Alone DC Microgrid Using Photovoltaic Flexible Power Control

Yan, Hein Wai; Narang, Aditi; Tafti, Hossein Dehghani; Farivar, Glen G.; Ceballos, Salvador; Pou, Josep

doi:10.1109/tsg.2021.3073370

Cited by 42 publications

(21 citation statements)

References 27 publications

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“…Power reserve control with FPPT operation has also been implemented in microgrid applications [154], [155]. In stand-alone dc microgrids with a PV system, a BESS is conventionally used for regulating the dc-link voltage and dealing with the power mismatch between the supply and the demand, causing a continuous battery operation.…”

Section: E M E R G I N G T E C H N O L O G I E S a N D P R O S P E C ...mentioning

confidence: 99%

Grid-Connected Energy Storage Systems: State-of-the-Art and Emerging Technologies

et al. 2023

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High penetration of renewable energy resources in the power system results in various new challenges for power system operators. One of the promising solutions to sustain the quality and reliability of the power system is the integration of energy storage systems (ESSs). This article investigates the current and emerging trends and technologies for grid-connected ESSs. Different technologies of ESSs cate-

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Section: E M E R G I N G T E C H N O L O G I E S a N D P R O S P E C ...mentioning

confidence: 99%

Grid-Connected Energy Storage Systems: State-of-the-Art and Emerging Technologies

et al. 2023

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“…As a result, DCMGs are frequently incorporated with DC distribution systems to meet the consumer demand in some applications such of energy storage technologies such as BESSs, hydrogen-based energy storages, SCESSs, etc. Among these ESSs, the BESS is widely used to compensate the power imbalance in DCMGs as it shows some distinct features (e.g., high energy density, matured technology, low cost, and availability) as compared to other ESSs [11]. However, the BESS is not able to provide the power into the MG in a quicker way owing to its slow response time during the fast transient.…”

Section: Introductionmentioning

confidence: 99%

A nonlinear double‐integral sliding mode controller design for hybrid energy storage systems and solar photovoltaic units to enhance the power management in DC microgrids

Ghosh¹,

Roy

Pramanik

et al. 2022

IET Generation Trans & Dist

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In this paper, a nonlinear decentralized double‐integral sliding mode controller (DI‐SMC) is designed along with an energy management system (EMS) for the DC microgrid (DCMG). This DCMG includes having a hybrid energy storage system (HESS) that incorporates a battery energy storage system (BESS) and supercapacitor energy storage system (SCESS) while the load demand is met through the power generated from solar photovoltaic (SPV) units. First, dynamical models of each subsystem of DCMGs such as the SPV system, BESS, and SCESS are developed to capture highly nonlinear behaviors of DCMGs under various operating conditions. The proposed nonlinear DI‐SMC is then designed for each power unit in DCMGs to ensure the desired voltage level at the common DC‐bus and appropriate power dispatch of different components to fulfill the load requirement of the DCMG. On the other hand, an energy management system (EMS) is designed to determine the set point for the controller with an aim of ensuring the power balance within DCMGs under various operating conditions where the overall stability is assessed using the Lyapunov theory. Simulation studies along with the processor‐in‐loop validation, including a comparative study with a proportional‐integral (PI) controller, verify the applicability and effectiveness of the EMS‐based DI‐SMC under different operating conditions of the DCMG.

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“…The solar PV-based microgrid makes use of the battery energy storage (BES) in an autonomous mode of operation [3,4], but the cost of BES and its maintenance makes hindrance by using a battery in the microgrid system [5]. The short lifespan, maintenance necessity, requirement of huge space, and high cost of a battery put an additional burden on the economics of microgrids [6]. The maximum power point tracking (MPPT) technique is needed to resolve the intermittent issues of the solar PV power.…”

Section: Introductionmentioning

confidence: 99%

Utility intertie multi‐photovoltaic‐inverters‐based microgrid control for solar rooftop

Chauhan

Singh

2022

IET Energy Syst Integration

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The solar photovoltaic (PV)-based microgrid is one of the most ideal renewable energy resources. This paper presents a utility grid intertie multi-PV-inverter-based microgrid (MG) control for the solar rooftop application. The main and ancillary voltage source converters (VSCs) DC links are assimilated with PV arrays of independent maximum power point tracking (MPPT) algorithms for the economical and efficacious single-stage configuration. At the point of common coupling (PCC), parallel VSCs arrangement increases the MG's power rating with distinctive local loads. In normal circumstances, the current control methodology is employed by the main VSC under the grid-interactive mode. Conversely, in some grid contingency conditions under the isolated mode, its control transfers to the voltage control, which regulates the frequency and the voltage at PCC and acts like a grid-forming inverter. The ancillary VSC operation is implemented with the current control algorithm. The main VSC supplies the active power towards the grid and accomplishes the load requirement, whereas the ancillary VSC retains its load demand in a grid-interactive mode and also regulates the load requirement in an islanded mode of operation. The utilization of feed-forward components for PV arrays powers in the VSCs current control techniques improves the MG dynamic performance. The seamless mode transfer performance of the main VSC is implemented via a power electronics switch. The MATLAB software is used to model a microgrid and its performance is analysed via RT-LAB in real time through the OPAL-RT (OP4510) controller for various scenarios, that is, varying solar insolation, load alterations and unbalanced non-linear loads. The utilization of the modified Kwong's algorithm-based current control enhances the power quality such as harmonics current elimination and improvement in the power factor. The voltage profile of PCC voltages is enhanced via using a modified Kwong's algorithm-based filter in the voltage controller. The modified Kwong's algorithm has fast convergence, reduces misadjustments and gives very good performance compared to the least-mean-square (LMS) and Kwong's approaches. The total harmonic distortion (THD) of grid currents and PCC voltages THD in an isolated mode is found according to the limits of the IEEE-519 standard.

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Minimizing Energy Storage Utilization in a Stand-Alone DC Microgrid Using Photovoltaic Flexible Power Control

Abstract: Minimizing energy storage utilization in a stand-alone dc microgrid using photovoltaic flexible power control

Cited by 42 publications

References 27 publications

Grid-Connected Energy Storage Systems: State-of-the-Art and Emerging Technologies

Grid-Connected Energy Storage Systems: State-of-the-Art and Emerging Technologies

A nonlinear double‐integral sliding mode controller design for hybrid energy storage systems and solar photovoltaic units to enhance the power management in DC microgrids

Utility intertie multi‐photovoltaic‐inverters‐based microgrid control for solar rooftop

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