Optimal energy control of a PV-fuel cell hybrid system

Tiar, Mourad; Betka, Achour; Drid, Saïd; Abdeddaim, Sabrina; Becherif, Mohamed; Tabandjat, Abdulkader

doi:10.1016/j.ijhydene.2016.06.113

Cited by 54 publications

(16 citation statements)

References 9 publications

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“…Compared with the RTO strategies proposed in this study, the rule-based strategies are simple to implement, but these strategies require adjusting the parameters if the requested load varies. For example, the parameters are adjusted using fuzzy-based strategies [61,62]. However, it is worth noting that these rule-based strategies cannot guarantee optimality [63].…”

Section: Discussionmentioning

confidence: 99%

Energy Efficiency and Fuel Economy of a Fuel Cell/Renewable Energy Sources Hybrid Power System with the Load-Following Control of the Fueling Regulators

Bizon

Thounthong

2020

Mathematics

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Two Hybrid Power System (HPS) topologies are proposed in this paper based on the Renewable Energy Sources (RESs) and a Fuel Cell (FC) system-based backup energy source. Photovoltaic arrays and wind turbines are modeled as RESs power flow. Hydrogen and air needed for FC stack to generate the power requested by the load are achieved through the Load-Following control loop. This control loop will regulate the fueling flow rate to load level. A real-time optimization strategy for RES/FC HPS based on Extremum Seeking Control will find the Maximum Efficiency Point or best fuel economy point by control of the boost converter. Therefore, two HPS configurations and associated strategies based on Load-Following and optimization loops of the fueling regulators were studied here and compared using the following performance indicators: the FC net power generated on the DC bus, the FC energy efficiency, the fuel consumption efficiency, and the total fuel consumption. An increase in the FC system’s electrical efficiency and fuel economy of up to 2% and 12% respectively has been obtained using the proposed optimization strategies compared with a baseline strategy.

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Section: Discussionmentioning

confidence: 99%

Energy Efficiency and Fuel Economy of a Fuel Cell/Renewable Energy Sources Hybrid Power System with the Load-Following Control of the Fueling Regulators

Bizon

Thounthong

2020

Mathematics

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“…In [19], particle swarm optimization (PSO) algorithm has been utilized to ideally size a hybrid battery/PV/H2 energy system. A fuzzy-logic based Energy management of a grid-connected fuel cell/PV hybrid system has been investigated in [20]. A complete review of techniques and methods that can be employed for optimal management of hybrid PV/battery/fuel cell system is presented in [21].…”

Section: Literature Reviewmentioning

confidence: 99%

“…Eq. (20) states that the amount of stored heat in heat storage tank is equal to the amount of heat at former hour plus the amount of heat at present time, deducting the discharged heat by heat storage tank. Eq.…”

Section: Thermal Loadmentioning

confidence: 99%

Optimal stochastic short-term thermal and electrical operation of fuel cell/photovoltaic/battery/grid hybrid energy system in the presence of demand response program

Majidi

Zare

2017

Energy Conversion and Management

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“…• Modeling, control, and optimization of the FC system to improve the fuel economy [10][11][12]; • Developing innovative solutions and advanced technologies to improve the lifetime, reliability and safety in operation of the FC system [13,14]; • Numerical models for the control of hydrogen and thermal/electric energies productions through Solid Oxide Electrolyzer/Fuel Cells [15]: • Proposal of innovative stand-alone or grid-connected RES HPS architectures, which can be optimized based on advanced Energy Management Strategies (EMSs) [16][17][18] and Global Maximum Power Point Tracking (GMPPT) control algorithms [19][20][21] applied to available RESs (photovoltaic systems, wind turbines etc.) in order to optimally ensure the power flow balance on the DC bus (and/or the AC bus) [22][23][24] and improve the harvested energy from the RESs [25][26][27]; • Hybridization of the RES HPS with an FC system as backup energy source (FC/RES HPS) to mitigate the RES power variability and load dynamics by controlling the generated FC power at the level of the required power on the DC bus [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Fuel Cell Renewable Hybrid Power System Using the Control Mode of the Required Load Power on the DC Bus

2019

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In this paper, a systematic analysis of seven control topologies is performed, based on three possible control variables of the power generated by the Fuel Cell (FC) system: the reference input of the controller for the FC boost converter, and the two reference inputs used by the air regulator and the fuel regulator. The FC system will generate power based on the Required-Power-Following (RPF) control mode in order to ensure the load demand, operating as the main energy source in an FC hybrid power system. The FC system will operate as a backup energy source in an FC renewable Hybrid Power System (by ensuring the lack of power on the DC bus, which is given by the load power minus the renewable power). Thus, power requested from the batteries’ stack will be almost zero during operation of the FC hybrid power system based on RPF-control mode. If the FC hybrid power system operates with a variable load demand, then the lack or excess of power on the DC bus will be dynamically ensured by the hybrid battery/ultracapacitor energy storage system for a safe transition of the FC system under the RPF-control mode. The RPF-control mode will ensure a fair comparison of the seven control topologies based on the same optimization function to improve the fuel savings. The main objective of this paper is to compare the fuel economy obtained by using each strategy under different load cycles in order to identify which is the best strategy operating across entire loading or the best switching strategy using two strategies: one strategy for high load and the other on the rest of the load range. Based on the preliminary results, the fuel consumption using these best strategies can be reduced by more than 15%, compared to commercial strategies.

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Optimal energy control of a PV-fuel cell hybrid system

Cited by 54 publications

References 9 publications

Energy Efficiency and Fuel Economy of a Fuel Cell/Renewable Energy Sources Hybrid Power System with the Load-Following Control of the Fueling Regulators

Energy Efficiency and Fuel Economy of a Fuel Cell/Renewable Energy Sources Hybrid Power System with the Load-Following Control of the Fueling Regulators

Optimal stochastic short-term thermal and electrical operation of fuel cell/photovoltaic/battery/grid hybrid energy system in the presence of demand response program

Optimization of the Fuel Cell Renewable Hybrid Power System Using the Control Mode of the Required Load Power on the DC Bus

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