Fuel cell high-power applications

Thounthong, Phatiphat; Davat, Bernard; Raël, Stéphane; Sethakul, Panarit

doi:10.1109/mie.2008.930365

Cited by 136 publications

(11 citation statements)

References 121 publications

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“…According to Reference [41], common traffic conditions can be divided into three main types-Urban Congestion Type (UCT), Urban/Suburb Normal Type (USNT) and Highway Clear Type (HCT). The UCT is the condition where a vehicle is driving on a congested urban road and its characteristics are low average speed with frequent idling.…”

Section: Traffic-condition Categorizingmentioning

confidence: 99%

Traffic-Condition-Prediction-Based HMA-FIS Energy-Management Strategy for Fuel-Cell Electric Vehicles

Yao

et al. 2019

Energies

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In the field of Fuel Cell Electric Vehicles (FCEVs), a fuel-cell stack usually works together with a battery to improve powertrain performance. In this hybrid-power system, an Energy Management Strategy (EMS) is essential to configure the hybrid-power sources to provide sufficient energy for driving the FCEV in different traffic conditions. The EMS determines the overall performance of the power supply system; accordingly, EMS research has important theoretical significance and application values on the improvement of energy-utilization efficiency and the serviceability of vehicles' hybrid-power sources. To overcome the deficiency of apparent filtering lag and improve the adaptability of an EMS to different traffic conditions, this paper proposes a novel EMS based on traffic-condition predictions, frequency decoupling and a Fuzzy Inference System (FIS). An Artificial Neural Network (ANN) was designed to predict traffic conditions according to the vehicle's running parameters; then, a Hull Moving Average (HMA) algorithm, with filter-window width decided by the prediction result, is introduced to split the demanded power and keep low-frequency components in order to meet the load characteristics of the fuel cell; afterward, an FIS was applied to manage power flows of the FCEV's hybrid-power sources and maintain the State of Change (SoC) of the battery in a predefined range. Finally, an FCEV simulation platform was built with MATLAB/Simulink and comparison simulations were carried out with the standard test cycle of the Worldwide harmonized Light vehicle Test Procedures (WLTPs). Simulation results showed that the proposed EMS could efficiently coordinate the hybrid-power sources and support the FCEV in following the reference speed with negligible control errors and sufficient power supply; the SoC of the battery was also maintained with good adaptability in different driving conditions.

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Section: Traffic-condition Categorizingmentioning

confidence: 99%

Traffic-Condition-Prediction-Based HMA-FIS Energy-Management Strategy for Fuel-Cell Electric Vehicles

Yao

et al. 2019

Energies

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“…A review on the FC technology, characteristics and research area is given in [24]. Usually four types of FCs, named PEMFC, PAFC, MCFC and SOFC, classified based on their electrolyte type, are used in electrical utilities for electric power generation [25].…”

Section: Fuel Cell (Fc)mentioning

confidence: 99%

Operation and control of a hybrid microgrid containing unbalanced and nonlinear loads

Shahnia

Majumder

Ghosh

et al. 2010

Electric Power Systems Research

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1 Abstract-This paper shows how the power quality can be improved in a microgrid that is supplying a nonlinear and unbalanced load. The microgrid contains a hybrid combination of inertial and converter interfaced distributed generation units where a decentralized power sharing algorithm is used to control its power management. One of the distributed generators in the microgrid is used as a power quality compensator for the unbalanced and harmonic load. The current reference generation for power quality improvement takes into account the active and reactive power to be supplied by the micro source which is connected to the compensator. Depending on the power requirement of the nonlinear load, the proposed control scheme can change modes of operation without any external communication interfaces. The compensator can operate in two modes depending on the entire power demand of the unbalanced nonlinear load. The proposed control scheme can even compensate system unbalance caused by the single-phase micro sources and load changes. The efficacy of the proposed power quality improvement control and method in such a microgrid is validated through extensive simulation studies using PSCAD/EMTDC software with detailed dynamic models of the micro sources and power electronic converters.

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“…Therefore, in order to produce high voltages, it is necessary to combine several of these cells in series and parallel form. However, increasing the number of cells will lead to decrease in power efficiency [5]. Therefore, for increasing of output voltage, DC–DC converters with high‐voltage gain are used [5].…”

Section: Introductionmentioning

confidence: 99%

“…However, increasing the number of cells will lead to decrease in power efficiency [5]. Therefore, for increasing of output voltage, DC–DC converters with high‐voltage gain are used [5]. Boost and buck–boost converters can achieve high‐voltage gains at high duty cycles.…”

Section: Introductionmentioning

confidence: 99%

Generalised transformerless ultra step‐up DC–DC converter with reduced voltage stress on semiconductors

Nouri

Hosseini

Babaei

et al. 2014

IET Power Electronics

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A non-isolated DC-DC converter with high-voltage gain and low-voltage stress across the semiconductors is proposed in this study. The proposed converter consists of n stages of diode-capacitor-inductor (D-C-L) units at the input side and m units of voltage multiplier cells (VMCs) at the output side. Increasing of D-C-L units and VMCs, lead to high-voltage gain at low duty cycle. Lower values of duty cycle will result in increasing of converter controllability and increasing of operation region. Also by increasing of VMCs, the voltage stress across the main switch and other semiconductors is reduced severely. Decreasing of voltage stress across the main switch leads to use a switch with lower R DS-ON that reduces on state losses of the proposed converter. Besides, by decreasing of voltage stress across the diode rectifiers, diodes with less forward voltage drop can be adopted. The circuit performance will be compared with other solutions that were previously proposed for voltage step-up in the terms of voltage gain, main switch voltage stress and number of components. Finally, a 357 V-65.5 W laboratory prototype with 92% conversion efficiency is built in order to prove the satisfying operation of the proposed converter and carried mathematical analysis.

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Fuel cell high-power applications

Cited by 136 publications

References 121 publications

Traffic-Condition-Prediction-Based HMA-FIS Energy-Management Strategy for Fuel-Cell Electric Vehicles

Traffic-Condition-Prediction-Based HMA-FIS Energy-Management Strategy for Fuel-Cell Electric Vehicles

Operation and control of a hybrid microgrid containing unbalanced and nonlinear loads

Generalised transformerless ultra step‐up DC–DC converter with reduced voltage stress on semiconductors

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