Design and comparison different power management systems for mobile APU based on PEM fuel cell

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F17%3A43913429" target="_blank" >RIV/60461373:22310/17:43913429 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22310/17:43913431

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Design and comparison different power management systems for mobile APU based on PEM fuel cell

Original language description

Modern rescue and military units require for their efficient work numerous electronic devices. Number of these devices is rapidly growing in time. Whereas in fifties of the 20th century the typical equipment consisted of an electric lamp. In 21st century it was extended e.g. by walkie-talkie, night-glass and other electronic devices. Although their energy consumption dramatically decreased within the last decades, demands on their performance is continuously growing. For all such services cut-off of the energy supply, or providing mobile, long-lasting and reliable energy supply for outdoor activities, represents an important issue. Typical long-time consumption of police/fire brigade mobile base with necessary equipment comprises 100-200 W of base load and up-to 300 W of peak consumption. PEM fuel cell stack based mobile APU represents promising solution of this problem. Its main advantages are high flexibility and efficiency, high process intensity, instantaneous refueling and absence of moving parts. The last aspect being a reason of fuel cell silent operations, because only ventilators are source of noise. This fact is very important for medicine and military applications. Products of reactions taking place in fuel cells are electric energy, heat and water exclusively. This fact allows application of this technology also in areas sensitive to exhalations. All above-mentioned devices represent dynamic loads. It is in contradiction to the preferable PEM fuel cell operation regime. This is reason, why power management is necessary for its efficient operation. This problem can be accomplished by utilizing correspondingly sized accumulators connected to the fuel cell stack. Li-ion accumulators represent suitable option to solve this task. It is due to their low weight and high charging/discharging currents. Main drawbacks consist in decrease of these currents by low temperatures, typically bellow 10 °C and impossibility of their charging by temperature under 0 °C.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

<a href="/en/project/VI20152019018" target="_blank" >VI20152019018: Development and realization of autonomous DC power supply with hydrogen fuel cell</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů