Question

英语翻译在软件环境下,电源的建模仿真研究对电源的设计起着重要的辅助作用,不仅可以缩短开发周期,还可以降低设计成本,所以电

Answer 1

Under software environment,power source's modelling simulation research to power source's design important auxiliary function,not only may reduce the development cycle,but may also reduce the designed cost,therefore power source's modelling simulation research already became develops switching power supply's essential part now.This article primary coverage is establishes comprehensive AC under the computer software environment a DC cocurrent switching power supply's simulation model,and analyzes and studies various parameters to the model performance influence.in above commonly used converter analysis situs foundation,this article in view of practical application design in AC a DC cocurrent switching power supply,multianalysis entire bridge converter's principle of work,PWM chip UC3842 structure,principle of work and control circuit design.Based on the theoretical design foundation,establishes in the control circuit when the ORCADPSPICE simulation software the various branches' single model,the simulation analytical study parameter change to various models performance influence,from this according to performance need aided design choice appropriate parameter.Establishes electric circuit's block mold in above the minute model's foundation,the confirmation designa circuit's feasibility.because designs AC a DC cocurrent switching power supply work under the hard switch pattern,has the big switching loss,uses the soft switch pattern to be possible to further raise the efficiency.The phase shifting entire bridge converter was opposite in the bridge-type converter may realize the soft switch,this article has done the phase shifting entire bridge converter's principle of work the concrete study,and has established the phase shifting entire bridge soft switch's simplified model,the simulation research switching valve's zero potential breakover and the shutdown.