Abstract
This article aims to enhance the output voltage magnitude of fuel cells (FCs), since the actual generation is low. The traditional technique is too complicated and has a cascaded or parallel connection solution to achieve high voltage for multiple loads in vehicles. In this case, electronic power converters are a viable solution with compact size and cost. Hence, double or multiple output DC–DC converters with high voltage step up are required to feed multiple high voltage loads at the same time. In this article, novel double stage double output (DSDO) DC–DC converters are formulated to feed multiple high voltage loads of FC vehicular system. Four DSDO DC–DC converters called DSDO L–L, DSDO L-2L, DSDO L-2LC, and DSDO L-2LC are developed in this research work and all the converters are derived based on the arrangement of different reactive networks. The primary power circuitry, conceptual operation, and output voltage gain derivation are given in detail with valid proof. The proposed converters are compared with possible parallel combinations of conventional converters and recently available configuration. Comprehensive numerical simulation and experimental prototype results show that our theoretical predictions are valid and that the configuration is applicable for real time application in FC technologies for ‘more-electric vehicles’.
Highlights
In electric grid, hybrid ‘more-electric vehicles’, automobile high-intensity discharge headlamps, uninterruptible power supply, and luxury loads application multiport and multilevel power converters popular solutions [1,2,3,4]
Four double stage double output (DSDO) DC–DC converters called DSDO L–L, DSDO L-2L, DSDO L-2LC, and DSDO L-2LC are developed in this research work and all the converters are derived based on the arrangement of different reactive networks
Comprehensive numerical simulation and experimental prototype results show that our theoretical predictions are valid and that the configuration is applicable for real time application in fuel cells (FCs) technologies for ‘more-electric vehicles’
Summary
Hybrid ‘more-electric vehicles’, automobile high-intensity discharge headlamps, uninterruptible power supply, and luxury loads application multiport and multilevel power converters popular solutions [1,2,3,4]. The major obstacles facing FC technology are durability, low generated voltage, and to fulfill the voltage demand of high voltage loads in FC vehicles. In such cases, power electronic DC–DC converters with high voltage conversion ratios and high efficiency play a pivotal control role [9,10,11,12]. Adverse effects at extreme duty ratio lead to reduced controllability, increased switching losses, high conduction losses, large current ripple, high current and voltage ratings, and reverse diode recovery problems [13,14,15,16].
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