A Comparison of Energy Management System for a DC Microgrid

Vásquez, Luis O. Polanco; Ramirez, Victor; Thanapalan, Kary

doi:10.3390/app10031071

Cited by 11 publications

(7 citation statements)

References 18 publications

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“…The system’s efficiency depends greatly on the development of MG energy management, which is essential [ 30 , 31 ]. The necessary power by the load in a hybrid system not supplied by the PV array is known as net power (

).…”

Section: Proposed Energy Management Strategiesmentioning

confidence: 99%

Advanced Energy Management Strategy of Photovoltaic/PEMFC/Lithium-Ion Batteries/Supercapacitors Hybrid Renewable Power System Using White Shark Optimizer

Alhumade

Rezk

Louzazni

et al. 2023

Sensors

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The slow dynamic response of a proton exchange membrane fuel cell (PEMFC) to high load change during deficit periods must be considered. Therefore, integrating the hybrid system with energy storage devices like battery storage and/or a supercapacitor is necessary. To reduce the consumed hydrogen, an energy management strategy (EMS) based on the white shark optimizer (WSO) for photovoltaic/PEMFC/lithium-ion batteries/supercapacitors microgrid has been developed. The EMSs distribute the load demand among the photovoltaic, PEMFC, lithium-ion batteries, and supercapacitors. The design of EMSs must be such that it minimizes the use of hydrogen while simultaneously ensuring that each energy source performs inside its own parameters. The recommended EMS-based-WSO was evaluated in regard to other EMSs regarding hydrogen fuel consumption and effectiveness. The considered EMSs are state machine control strategy (SMCS), classical external energy maximization strategy (EEMS), and optimized EEMS-based particle swarm optimization (PSO). Thanks to the proposed EEMS-based WSO, hydrogen utilization has been reduced by 34.17%, 29.47%, and 2.1%, respectively, compared with SMCS, EEMS, and PSO. In addition, the efficiency increased by 6.05%, 9.5%, and 0.33%, respectively, compared with SMCS, EEMS, and PSO.

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).…”

Section: Proposed Energy Management Strategiesmentioning

confidence: 99%

Advanced Energy Management Strategy of Photovoltaic/PEMFC/Lithium-Ion Batteries/Supercapacitors Hybrid Renewable Power System Using White Shark Optimizer

Alhumade

Rezk

Louzazni

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…Over the last two decades, the design of energy management systems (EMSs) has piqued the interest of the energy research community. This interest arises from the ongoing and improved development of renewable energy systems and the optimization of EMS technology employing sophisticated energy storage systems, according to [25].…”

Section: Energy Management Strategymentioning

confidence: 99%

A Comparison of Different Renewable-Based DC Microgrid Energy Management Strategies for Commercial Buildings Applications

et al. 2022

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DC microgrid systems allow commercial buildings to use locally generated energy and achieve an optimal economy efficiently. Economical and eco-friendly energy can be achieved by employing renewable energy sources. However, additional controllable sources, such as fuel cells, are required because of their reduced efficiency and fluctuated nature. This microgrid can use energy storage systems to supply transient power and enhance stability. The functioning of the microgrid and its efficiency are related to the implemented energy management strategy. In this paper, a comparison of several reported energy management strategies is fulfilled. The considered EMSs include the fuzzy logic control (FLC) strategy, the state machine control (SMC) strategy, the equivalent consumption minimization strategy (ECMS), and external energy maximization strategy (EEMS). These strategies are compared in terms of power-saving, system efficiency, and power quality specifications. The overall results confirm the ability of EEMS (high efficiency of 84.91% and economic power-saving 6.11%) and SMC (efficiency of 84.18% with high power-saving 5.07%) for stationary applications, such as building commercial applications. These strategies provide other advantages, which are discussed in detail in this paper.

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“…(a) Designing the EMS with technical/economic objectives, assuming the existence of continuous grid-connection to supply/absorb any shortage/surplus power [16,17]. (b) Designing the isolated EMS for batteries state of charge (SoC) optimization and lifecycle extension, without considering the described special operating cases [18]. (c) Designing the system with RES mode shift between MPPT and VR taken into consideration, but without accounting to load shedding under light supply conditions [14].…”

Section: Ems Design State-of-the-artmentioning

confidence: 99%

Innovative Energy Management System for MVDC Networks with Black-Start Capabilities

et al. 2021

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Medium voltage DC (MVDC) networks are attracting more attention amid increased renewables penetration. The reliability of these DC systems is critical, especially following grid contingencies to maintain critical loads supply and provide ancillary services, such as black-start. This paper proposes an innovative energy management system (EMS) to maintain reliable MVDC network operation under prolonged AC grid contingencies. Similar EMS designs in literature tend to focus on limited operating modes and fall short of covering comprehensive elongated blackout considerations. The proposed EMS in this paper aims to preserve the distribution network functionality of the impacted MVDC system through maintaining a constant DC bus voltage, maximizing critical load supply duration, and maintaining the MVDC system black-start readiness. These objectives are achieved through controlling generation units between Maximum Power Point Tracking (MPPT) and Voltage Regulation (VR) modes, and implementing a smart load shedding and restoration algorithm based on network parameters feedback, such as storage State of Change (SoC) and available resources. Practical design considerations for MVDC network participation in AC network black start, and the following grid synchronization steps are presented and tested as part of the EMS. The proposed system is validated through simulations and scaled lab setup experimental scenarios.

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A Comparison of Energy Management System for a DC Microgrid

Cited by 11 publications

References 18 publications

Advanced Energy Management Strategy of Photovoltaic/PEMFC/Lithium-Ion Batteries/Supercapacitors Hybrid Renewable Power System Using White Shark Optimizer

Advanced Energy Management Strategy of Photovoltaic/PEMFC/Lithium-Ion Batteries/Supercapacitors Hybrid Renewable Power System Using White Shark Optimizer

A Comparison of Different Renewable-Based DC Microgrid Energy Management Strategies for Commercial Buildings Applications

Innovative Energy Management System for MVDC Networks with Black-Start Capabilities

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