MODELING AND ANALYSIS OF CCM FLYBACK CONVERTER BASED ON R-L FRACTIONAL-ORDER DEFINITION

被引：0
作者：
Wang S. [1 ,2 ]
Fu Y. [1 ,2 ]
Chang Y. [1 ,2 ]
Yang P. [3 ]
Li Q. [3 ]
机构：
[1] Hebei Provincial Collaborative Innovation Center of Transportation Power Grid Intelligent Integration Technology and Equipment, Shijiazhuang Tiedao University, Shijiazhuang
[2] School of Electrical and Electronic Engineering, Shijiazhuang Tiedao University, Shijiazhuang
[3] State Grid Hebei Electric Power Co.,Ltd, Shijiazhuang
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2024年 / 45卷 / 06期
关键词：
DC-DC converters; fractional-order modeling; power electronics; R-L definition; simulation platform;
D O I：
10.19912/j.0254-0096.tynxb.2023-0285
中图分类号：
学科分类号：
摘要：
In view of the fact that capacitors and inductors are fractional order, fractional-order Flyback converters operating in current continuous mode (CCM) are modeled and analyzed by using fractional-order calculus R-L definition and state-space averaging method. The mean state model, boost ratio, DC static equilibrium point, inductor cur-rent ripple and the condition of CCM Flyback converter working in CCM mode are derived. Secondly, the difference between Caputo model and R-L derivative model is discussed. It is concluded that the DC static operating point and boost ratio under R-L fractional order definition are not only related to duty ratio, but also related to the order of inductance and capacitance and load. Finally, the circuit model of R-L fractional-order CCM Flyback converter was built in PSIM, and the simulation waveforms of the output voltage and inductance current of fractional-order Flyback converter were made under different fractional-order inductance and capacitance orders. By comparing the simulation results with the theoretical calculation results, the correctness of the model was verified. It is concluded that the fractional-order Flyback converter model derived from R-L definition can more accurately describe the operating characteristics of CCM fractional-order flyback converter. © 2024 Science Press. All rights reserved.
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页码：217 / 225
页数：8
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