Application of Phase Adjustment of Fuel Cell DC-DC Converter
Journal Title: 河南科技大学学报（自然科学版） - Year 2019, Vol 40, Issue 2
Abstract
The output power of the fuel cell direct current-direct current ( DC-DC) converter under light-load conditions were relatively low. If the operation of all electronic devices was still retained, the efficiency of the DC-DC converter would be reduced. At this time, the phase number adjustment strategy could improve the conversion efficiency of the fuel cell DC-DC. Taking the four-phase interleaved parallel Boost as the research object, the efficiency equation of the single-phase Boost was deduced from the power loss of each device of the converter, and the efficiency curve of the parallel Boost converter with different working phase numbers was plotted. The effect of different load states and switching frequencies on the efficiency curve was analyzed.Simulation analysis and experimental results verified the correctness of the theoretical analysis. Under the requirement of satisfying the low voltage current ripple of the fuel cell, changing the number of on-line working phases of the fuel cell DC-DC converter under light load conditions increases the conversion efficiency by 32% at the maximum.
Authors and Affiliations
Liang HUANG, Jin HUANG, Ruiming ZHANG, Changjun XIE
Keywords
Related Articles
- EP ID EP422472
- DOI 10.15926/j.cnki.issn1672-6871.2019.02.006
- Views 108
- Downloads 0
Three-dimensional Performance of Vertical Axis Wind Rotor Inspired by Bionic Fish Ridge
In order to improve the wind energy conversion efficiency of the resistance vertical axis wind rotor, the influence of wind rotor typical structural parameters of a proposed fish-ridged type wind rotor on wind energy con...
effects of Breaking Time on Oscillation Mechanism of Nonlinear Switched System
1
Breeding of High Natamycin-producing Strains and Optimizing of Fermentation Process
Streptomyces natalensis 4.3505 was used as the original bacterial strain and the ultravoilet ray was employed as the mutation method. In order to filter out high-yield Natamycin mutant strain for anti-sodium acetate,the...
Effects of Diesel Oxidation Catalyst on Particulates Emission from Diesel Engine
In order to study the effects of diesel oxidation catalyst( DOC) on the characteristics of particulates emission from diesel engine,the particulates of three high-load conditions of the CY4102-CE4 B diesel engine were co...
Comparative Study on Machinability of Cast Irons with Different Tensile Strength
A spheroidal graphite cast iron,three compacted graphite irons and a gray cast iron were cast. The main cutting forces of five samples with different tensile strength were measured. The relationships among the tensile st...