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In the proton exchange membrane fuel cell (PEMFC) for vehicles, the changes in gas composition and oxygen accumulation may exist during the parking process even by using a shut‐down strategy of oxygen consumption, which can lead to the hydrogen/air interface. However, this process of oxygen accumulation is often ignored. Thus, in this work, the diffusion rate of the gas, the gas composition changes,...
The wind/solar hybrid system is an equipment transforming light and wind energy into electrical energy. The wind/solar hybrid can make up for the disadvantages such as low reliability and high cost single by wind or solar power generation, and it can be widely used in communication base stations and other occasions. In this paper, technical and economic analysis on the wind/solar hybrid system are...
Based on the development of a pluggable fuel cell range extender, the differences between Range Extender System and battery as Peak Shaving System (PPS) for fuel cell hybrid system are analyzed in this paper. The key component selection and matching such as fuel cell system, DC/DC converter etc are also disscussed. At the end of this paper, the combined simulation is used to test and verify the range...
A real time test bench for the PEM fuel cell engine is introduced in this paper. Based on the virtual instrument technology, all the measurement and control tasks are downloaded into the PXI-based system controller (PXI-8110), which are scheduled by LabVIEW RTOS (Real Time Operating System) and then executed in the manner of real time. This paper first introduced the theory of fuel cell and structure...
There are many challenges in the developing process of Electronics Control Unit (ECU) in automotive industries. In order to cut the cost and shorten the development time of ECU, V-cycle is applied commonly. ECUs applied in fuel cell vehicles meet the same challenges as well. To obtain safer, more reliable and effective controllers of fuel cell engines with lower cost, the ECU rapid prototype is used...
TCM acoustic diagnosis is an important part of the diagnostics of traditional Chinese medicine. Voice can be used to reflect the functions of the viscera and the variations of the pathological conditions. In this paper vowel /a/ signals of healthy persons and patients with deficiency syndrome are analyzed and studied with Delay Vector Variance method. The results indicated that there exists distinct...
This paper deals with the water and thermal balance in Proton Exchange Membrane(PEM) fuel cell stack through the water state calculation and thermodynamic analysis. A reasonable assumption is made by analyzing the experimental result, which assumes that the liquid water generated in fuel cell stack is removed through cathode channel and the gas at both gas channel outlet is water saturated. A new...
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