Abstract
Analysis of power converter performance has tended to be engineering-oriented, focusing mainly on voltage stability, output power and efficiency improvement. However, there has been little discussion about the weight relations between these factors. In view of the previous inadequacy, this study employs regression, rough set and GM(1,N) to analyze the relations among the factors that affect the converter, with a symmetrical half-bridge power converter serving as an example. The four related affecting factors, including the current conversion ratio, voltage conversion ratio, power conversion ratio and output efficiency, are firstly analyzed and calculated. The respective relative relations between output efficiency and the other three factors are obtained. This research can be referred to by engineers in their design of symmetrical half-bridge power converters.
Highlights
Symmetrical Half-Bridge PowerCurrently, two different models of power supply are available in the market, including linear power supply and switching power supply
With technological advancements, the linear power supply has been gradually replaced by the switching power supply, which is widely used in 3C products
Research on power converters in the past has turned out good results in circuit design and product development
Summary
Two different models of power supply are available in the market, including linear power supply and switching power supply. Despite switching power supply being credited with high conversion efficiency, light weight and a wide-range DC input, its circuit structure features a complex circuit and large electromagnetic interference. The symmetrical half-bridge power converter serves as a switching power supply. The symmetrical half-bridge power converter is different from push-pull singleended driving or interleaved driving, which requires a double input voltage. It is widely used in converters whose power supply voltage is higher than the safety standard voltage value of the transistor. Research on power converters has focused mainly on circuit design and practical development, including high-power two-way bridge power supplies [3]. The final section draws conclusions from the results and puts forward suggestions for future research
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