Analysis of Inverter Based on SCR and PWM Comparation

2014 ◽  
Vol 556-562 ◽  
pp. 1533-1536
Author(s):  
Jia Zhou ◽  
Xiao Long Tan ◽  
Wen Bin Wang
Keyword(s):  
Fuel Cell ◽  
Energy Conversion ◽  
Modern Society ◽  
Electrical Energy ◽  
Energy Sources ◽  
Energy Technology ◽  
Ac Power ◽  
Solar Battery ◽  
New Energy ◽  
Cell Energy

Inverter technology as the key part of using new energy technology, can be very effective to new energy sources such as solar, battery and fuel cell energy conversion of ac electrical energy transform into ac power, and can be connected to the grid. Therefore, the inverter technology has an extremely important statue in modern society.

scholarly journals Transport Parameter Correlations for Digitally Created PEFC Gas Diffusion Layers by Using OpenPNM

Processes ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 1141
Author(s):  
Ángel Encalada-Dávila ◽  
Mayken Espinoza-Andaluz ◽  
Julio Barzola-Monteses ◽  
Shian Li ◽  
Martin Andersson
Keyword(s):  
Fuel Cell ◽  
Energy Conversion ◽  
Transport Phenomena ◽  
Electrical Energy ◽  
Gas Diffusion ◽  
Polymer Electrolyte Fuel Cell ◽  
Carbon Paper ◽  
Transport Parameter ◽  
Transport Parameters ◽  
Depth Analysis

A polymer electrolyte fuel cell (PEFC) is an electrochemical device that converts chemical energy into electrical energy and heat. The energy conversion is simple; however, the multiphysics phenomena involved in the energy conversion process must be analyzed in detail. The gas diffusion layer (GDL) provides a diffusion media for reactant gases and gives mechanical support to the fuel cell. It is a complex medium whose properties impact the fuel cell’s efficiency. Therefore, an in-depth analysis is required to improve its mechanical and physical properties. In the current study, several transport phenomena through three-dimensional digitally created GDLs have been analyzed. Once the porous microstructure is generated and the transport phenomena are mimicked, transport parameters related to the fluid flow and mass diffusion are computed. The GDLs are approximated to the carbon paper represented as a grouped package of carbon fibers. Several correlations, based on the fiber diameter, to predict their transport properties are proposed. The digitally created GDLs and the transport phenomena have been modeled using the open-source library named Open Pore Network Modeling (OpenPNM). The proposed correlations show a good fit with the obtained data with an R-square of approximately 0.98.

scholarly journals Fuel Cell Powered Electric Propulsion for HALE Aircraft

1992 ◽  
Author(s):  
John C. Bentz
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Electric Propulsion ◽  
Environmental Pollutants ◽  
Electrical Energy ◽  
Propulsion System ◽  
Energy Sources ◽  
Propulsion Systems ◽  
Aircraft Propulsion System ◽  
Aircraft Propulsion

Electrical energy sources offer some interesting possibilies for aircraft propulsion. Of particular interest are electric propulsion systems developed for aircraft that are designed for high altitude, long endurance (HALE) missions. This class of aircraft would greatly benefit from an aircraft propulsion system which minimizes thermal energy rejection and environmental pollutants. Electric propulsion systems may prove viable for the HALE mission, if reliable energy sources can be developed that are both fuel and weight efficient. Fuel cells are a possible energy source. This paper discusses the thermodynamic cyclic analysis of a fuel cell powered electric propulsion system. In particular, phosphoric acid and polymer electrolyte fuel cells are evaluated as possible energy sources.

Power Management in a Hybrid Grid Involving Photo Voltaic and Proton Exchange Membrane Fuel Cell

2020 ◽  
Vol 18 (4) ◽  
pp. 259-267
Author(s):  
Nayana Shetty ◽  
R. L. Chakrasali
Keyword(s):  
Fuel Cell ◽  
Energy Demand ◽  
Proton Exchange Membrane ◽  
Electrical Energy ◽  
Photovoltaic Cell ◽  
Proton Exchange ◽  
Solar Irradiation ◽  
Distributed Resources ◽  
New Energy ◽  
Hybrid Grid

The ever growing energy demand explored the generation of power by distributed resources. The distributed resources like photovoltaic, wind, fuel cell etc. are available in nature at free of cost. Photovoltaic cell is used to produce electrical energy by tracking energy from solar irradiation. Perturbation and Observing method is one of the option to track the concentrated power from solar irradiation. It is a clean source, but intermittent in nature. This is overcome by integrating a fuel cell (FC), the new energy source. Proton Exchanging Membrane (PEM) fuel cell is integrated with PV, and this hybrid DC source is integrated to micro grid using power electronic interfacing devices. The design of proper controller operation makes it to work in grid connected mode. The simulation is performed using Matlab-Simulink environment and results validates the performance of hybrid system.

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