Development of power management system for mobile UPS based on the PEM fuel cell stack

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F17%3A43913422" target="_blank" >RIV/60461373:22310/17:43913422 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22310/17:43913425

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Development of power management system for mobile UPS based on the PEM fuel cell stack

Original language description

Modern emergency units are supported by many electric and electronic devices allowing effective completion of their tasks. Common problem of such devices during outdoor operations represents availability of electric power supply characterized by sufficient capacity and reliability. Although power consumption of cellular phones, notebooks, GPS, walkie-talkie, lights, and other rescue equipment decreased significantly within last decades, this problem is not yet satisfactorily solved. It is because number of units and demands on their performance is uninterruptedly growing. Typical long-time consumption of rescuer/police mobile base comprises 100-200 W (up to 300 W peak). PEM fuel cell stacks represent promising technology for long time supply of such devices by electric energy. They possess several important advantages, as high efficiency, process intensity and flexibility, silent operation and nontoxic products of operation. A dynamic energy load has to be considered when designing UPS power management system. It is in contradiction to the preferable PEM fuel cell operation regime. This problem can be accomplished by utilizing correspondingly sized accumulators connected to the fuel cell stack. Some types of accumulators, however, are limited by relatively small charging currents. On the other hand, accumulators with high charging/discharging currents are characterized by narrow range of operational temperatures. An alternative option represents utilization of supercapacitors. They are able to operate under high current loads in a broad area of temperatures. Their main disadvantages, however, consist in lower energy/weight ratio and higher spontaneous discharging current when compared to accumulators.

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