中国电机工程学报2025，Vol.45Issue(10)：3973-3983,中插24,12.DOI:10.13334/j.0258-8013.pcsee.232087
考虑开关结电容的高频谐振型DC-DC变换器实时仿真建模方法研究
Research on the Real-time Simulation Modeling Method for High Switching Frequency Resonant DC-DC Converter Considering the Switch Junction Capacitance
摘要
Abstract
The switching junction capacitance plays a predominant role during the realization of the switching transient process in high switching frequency resonant DC-DC converters.However,incorporating the junction capacitance into the binary resistor model significantly increases simulation time step and calculated amount.Therefore,this paper proposes a real-time simulation method that takes the switching junction capacitance into account.Firstly,by establishing equivalent state equation,the converter model is divided into system-level model and device-level model to reduce the multiplicative computation of model matrix.Secondly,a dual-clock domain field-programmable gate array(FPGA)implementation scheme is adopted to optimize the timing path.Finally,the real-time simulation model of the full-bridge LLC resonant converter with 250 kHz switching frequency is realized on FPGA.The simulation time step of the system-level model is 50 ns,and the simulation time step of the device-level model is as low as 10 ns,which verifies the practicability of the proposed method in the fast simulation of switching transient.From the results of FPGA resource consumption and experimental comparison,the modeling method proposed in this paper can achieve low FPGA resource consumption and high precision.关键词
开关结电容/高频谐振型DC-DC变换器/二值电阻模型/实时仿真/双时钟域/现场可编程门阵列Key words
switch junction capacitance/high switching frequency resonant DC-DC converter/binary resistor model/real-time simulation/dual-clock domain/field-programmable gate array(FPGA)分类
信息技术与安全科学引用本文复制引用
孙宗辉,郭希铮,王诗楠,王玉乐,游小杰..考虑开关结电容的高频谐振型DC-DC变换器实时仿真建模方法研究[J].中国电机工程学报,2025,45(10):3973-3983,中插24,12.基金项目
中央高校基本科研业务费专项资金项目(科技领军人才团队项目)(2022JBXT006).Fundamental Research Funds for the Central Universities(Science and Technology Leading Talent Team Project)(2022JBXT006). （科技领军人才团队项目）
