Power Management Optimization of an Experimental Fuel Cell/Battery/Supercapacitor Hybrid System

Odeim, Farouk; Roes, J.; Heinzel, Angelika

doi:10.3390/en8076302

Cited by 87 publications

(39 citation statements)

References 38 publications

(60 reference statements)

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“…The battery module is usually simplified to the first order as seen in the approximated internal resistance model, and the impact of temperature and battery life are ignored [33]. The rule is that the positive power represents discharging and the negative power represents charging.…”

Section: Power Source Modelmentioning

confidence: 99%

Investigation of a Novel Coaxial Power-Split Hybrid Powertrain for Mining Trucks

et al. 2018

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Abstract:Due to the different working conditions and specification requirements of mining trucks when compared to commercial passenger vehicles, better fuel efficiency of mining trucks could lead to more significant economic benefits. Therefore, investigating a hybrid transmission system becomes essential. A coaxial power-split hybrid powertrain system for mining trucks is presented in this paper. The system is characterized as comprising an engine, a generator (MG1), a motor (MC2), two sets of planetary gears, and a clutch (CL1). There are six primary operation modes for the hybrid system including the electric motor mode, the engine mode, the hybrid electric mode, the hybrid and assist mode, the regenerative mode, and the stationary charging mode. The mathematical model of the coaxial power-split hybrid system is established according to the requirements of vehicle dynamic performance and fuel economy performance in a given driving cycle. A hybrid vehicle model based on a rule-based control strategy is established to evaluate the fuel economy. Compared with the Toyota Hybrid System (THS) and the conventional mechanical vehicle system using a diesel engine, the simulation results based on an enterprise project indicate that the proposed hybrid system can enhance the vehicle's fuel economy by 8.21% and 22.45%, respectively, during the given mining driving cycle. The simulation results can be used as a reference to study the feasibility of the proposed coaxial hybrid system whose full potential needs to be further investigated by adopting non-causal control strategies.

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Section: Power Source Modelmentioning

confidence: 99%

Investigation of a Novel Coaxial Power-Split Hybrid Powertrain for Mining Trucks

et al. 2018

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“…Furthermore, the customers' comfort is taken into account, and the SOC of the EV battery is within the specified limits for both control schemes. In addition, the proposed PF technique and FLC succeeded at keeping the SOC of UC within its safe limits (25-90%) as mentioned in [55] with using 60% as the initial value for SOC. Also, Figure 15 confirms obviously capability for intended PF approach to minimize fluctuations of ∆F and ∆P e in a great manner compared to conventional FLC.…”

Section: Casementioning

confidence: 99%

A Polar Fuzzy Control Scheme for Hybrid Power System Using Vehicle-To-Grid Technique

et al. 2017

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Abstract:A novel polar fuzzy (PF) control approach for a hybrid power system is proposed in this research. The proposed control scheme remedies the issues of system frequency and the continuity of demand supply caused by renewable sources' uncertainties. The hybrid power system consists of a wind turbine generator (WTG), solar photovoltaics (PV), a solar thermal power generator (STPG), a diesel engine generator (DEG), an aqua-electrolyzer (AE), an ultra-capacitor (UC), a fuel-cell (FC), and a flywheel (FW). Furthermore, due to the high cost of the battery energy storage system (BESS), a new idea of vehicle-to-grid (V2G) control is applied to use the battery of the electric vehicle (EV) as equivalent to large-scale energy storage units instead of small batteries to improve the frequency stability of the system. In addition, EV customers' convenience is taken into account. A minimal-order observer is used to estimate the supply error. Then, the area control error (ACE) signal is calculated in terms of the estimated supply error and the frequency deviation. ACE is considered in the frequency domain. Two PF approaches are utilized in the intended system. The mission of each controller is to mitigate one frequency component of ACE. The responsibility for ACE compensation is shared among all parts of the system according to their speed of response. The performance of the proposed control scheme is compared to the conventional fuzzy logic control (FLC). The effectiveness and robustness of the proposed control technique are verified by numerical simulations under various scenarios.

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“…They can be used to store energy and provide peak power demands in power electronic systems [18]. All of this is to optimize the battery lifetime and provide a very high cycle efficiency for various charge and discharge requests, if favorable loading conditions are provided [19].…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of a Switching Matrix Applied in a Bank of Supercapacitors

et al. 2017

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Distributed power generation systems (DPGSs) integrate power sources that tend to be smaller than the typical utility scale, such as for renewable energy sources and other applications. Storage systems that incorporate supercapacitors (SCs) have been proposed to extend the life of batteries and to increase the power capacity of the DPGSs, guaranteeing maximum efficiency. The extraction of energy in SCs is more demanding than in the case of batteries; when SCs have delivered only 75% of their energy, their voltage has already decreased to 50%. Beyond this value, the banks fail to meet the requirements demanded by loads that require a minimum voltage to operate correctly, leaving 25% of the energy unused, thereby limiting the deep charge/discharge cycles that occur. This paper presents a model of a switching matrix applied in a bank of SCs. The model allows the use of a simpler circuit to achieve a large number of serial/parallel-configuration connections (levels), improving the utilization of energy to obtain deep discharge cycles in each SC; therefore, by increasing the average energy extracted from each SC, it extends the power delivery time in the storage bank. The efficiency was verified by experimental results obtained using a bank of six SCs.

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Power Management Optimization of an Experimental Fuel Cell/Battery/Supercapacitor Hybrid System

Cited by 87 publications

References 38 publications

Investigation of a Novel Coaxial Power-Split Hybrid Powertrain for Mining Trucks

Investigation of a Novel Coaxial Power-Split Hybrid Powertrain for Mining Trucks

A Polar Fuzzy Control Scheme for Hybrid Power System Using Vehicle-To-Grid Technique

Experimental Evaluation of a Switching Matrix Applied in a Bank of Supercapacitors

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