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338424 
Journal Article 
Intelligent uninterruptible power supply system with back-up fuel cell/battery hybrid power source 
Yuedong, Z; Youguang, GUO; Jianguo, ZHU; Hua, W 
2008 
Yes 
Journal of Power Sources
ISSN: 0378-7753 
179 
2 
745-753 
This paper presents the development of an intelligent uninterruptible power supply (UPS) system with a hybrid power source that comprises a proton-exchange membrane fuel cell (PEMFC) and a battery. Attention is focused on the architecture of the UPS hybrid system and the data acquisition and control of the PEMFC. Specifically, the hybrid UPS system consists of a low-cost 60-cell 300 W PEMFC stack, a 3-cell lead-acid battery, an active power factor correction ac-dc rectifier, a half-bridge dc-ac inverter, a dc-dc converter, an ac-dc charger and their control units based on a digital signal processor TMS320F240, other integrated circuit chips, and a simple network management protocol adapter. Experimental tests and theoretical studies are conducted. First, the major parameters of the PEMFC are experimentally obtained and evaluated. Then an intelligent control strategy for the PEMFC stack is proposed and implemented. Finally, the performance of the hybrid UPS system is measured and analyzed. (English) 
Uninterruptible power supply; Proton-exchange membrane fuel cell; Lead-acid battery; Hybrid power source; Back-up and emergency power; Intelligent control; Accumulateur électrochimique; Performance; Vérification expérimentale; Etude expérimentale; Onduleur; Coût; Electrolyte polymère; Pile combustible membrane échangeuse proton; Système hybride; Batterie acide plomb; Alimentation ininterrompue; Système intelligent; Secondary cell; Experimental test; Experimental study; Inverter; Costs; Polymer electrolytes; Proton exchange membrane fuel cells; Hybrid system; Lead acid batteries; Intelligent system; Acumulador electroquímico; Rendimiento; Verificación experimental; Estudio experimental; Ondulador; Coste; Sistema híbrido; Alimentación ininterrumpida; Sistema inteligente