电力系统自动化2024，Vol.48Issue(8)：195-206,12.DOI:10.7500/AEPS20230706005
双有源桥型电力电子变压器电磁暂态实时低耗等效模型
Electromagnetic Transient Real-time Low-consumption Equivalent Model of Dual Active Bridge Based Power Electronic Transformer
摘要
Abstract
Power electronic transformers(PETs)are key devices for power conversion in flexible DC distribution networks.Due to the limitation of simulation resources,the scales of existing electromagnetic transient(EMT)real-time simulations for PETs are small,which can not meet the demand of hardware-in-loop test and fast simulation for the large-capacity system.This paper proposes a real-time low-consumption equivalent modeling algorithm for dual active bridge(DAB)based PETs.Firstly,the binary input admittance characteristics of the high-frequency link port decoupling model(HFL-PDM)of the DAB are deeply explored and elaborated from the perspective of numerical analysis and physical significance.Based on this,the HFL-PDM of the PET with the N+1 characteristics is constructed.Secondly,a low-memory-occupancy EMT solution scheme using limited storage,a compact low-latency simulation framework,and a hardware implementation scheme using packet-based parallel pipeline computing are designed,which reduce the demand for the storage memory,the computing clock,and the hardware resource during the real-time simulation.Finally,the real-time low-consumption equivalent simulation model at a time step of 250 ns is developed based on Verilog language in RT-LAB.The simulation accuracy and resource utilization of the established model are tested.关键词
电磁暂态实时仿真/电力电子变压器/双有源桥/高频链端口解耦/低资源消耗/RT-LABKey words
electromagnetic transient real-time simulation/power electronic transformer(PET)/dual active bridge(DAB)/high-frequency link port decoupling/low resource consumption/RT-LAB引用本文复制引用
高晨祥,林丹颖,韩林洁,冯谟可,许建中,李彬彬..双有源桥型电力电子变压器电磁暂态实时低耗等效模型[J].电力系统自动化,2024,48(8):195-206,12.基金项目
北京市自然科学基金面上项目(3222059). This work is supported by Beijing Natural Science Foundation of China(No.3222059). （3222059）
