摘要
四端口直流能量路由器具有多直流源荷高效柔性互动的优势,但内部多绕组变压器导致多端口功率耦合、控制复杂,现有实验教学方案难以全面直观展示其控制原理。为此,该文详细分析了四端口直流能量路由器在单移相调制下的数学模型和功率解耦控制策略。之后,构建了包含“MATLAB全仿真—StarSim半实物仿真—小功率实验样机—工程实践”的全环节实验教学方案,该方案融合现有虚实结合的多类型手段,直观全面地展示多端口能量路由器的功率解耦控制原理,逐步提升学生的理论分析能力、仿真验证能力和实践操作能力。
[Objective]Power electronics technology,a vital discipline within electrical engineering,plays a crucial role in the conversion and control of electrical energy.However,as this field advances,converter topologies and control algorithms become increasingly complex,making it difficult for students to intuitively grasp their working principles.Moreover,real-world converter operation and control involve intricate hardware and software systems,and students often lack hands-on experience,further hindering their deep understanding of power electronics.Traditional teaching methods tend to be isolated,making it challenging for students to effectively bridge the gap between theory and practice,ultimately leading to suboptimal learning outcomes.To enhance students’theoretical analysis,problem-solving abilities,and hands-on skills,a comprehensive five-stage teaching method has been developed.This method includes theoretical analysis,full simulation,semiphysical simulation,experimental prototyping,and engineering practice,with the quad-active bridge(QAB)converter as a case study.By seamlessly integrating theory with practice,this approach establishes a new teaching model that combines virtual and physical elements for a more effective learning experience.[Methods]First,a theoretical analysis of the QAB converter operating mechanism is conducted.The results indicate strong coupling in the power flow at the converter ports,highlighting the need for a decoupling control strategy.A feedforward compensation decoupling control strategy,closely aligned with engineering practice,is developed for the control loop design.To validate the effectiveness of the decoupling control strategy,three experimental platforms are designed and implemented:a full simulation using MATLAB/Simulink,a semiphysical simulation based on hardware-in-the-loop(HIL),and an experimental prototype utilizing actual hardware.Finally,the control performance is demonstrated through a five-terminal DC demonstration project within the university.This project allows students to apply theoretical knowledge in practical engineering scenarios.[Results]First,a simulation platform for the QAB converter is developed using MATLAB/Simulink.This virtual tool enables students to understand the fundamental principles and control strategies of the QAB converter.Second,a semiphysical experimental teaching platform based on HIL technology is constructed.The platform integrates hardware simulation with physical control.The main circuit model from MATLAB/Simulink is imported into a real-time simulator,where the main circuit hardware is virtually implemented using FPGA control algorithms.Moreover,the power decoupling control section is discretized,converted into a C language program,and deployed onto a physical DSP controller.This approach helps students gain practical experience in ADC sampling,C language-based discretization of control algorithms,and PWM signal generation,thereby improving their hands-on skills.Third,a QAB converter prototype is built via a modular approach to create a fully physical experimental teaching platform to further reinforce student practical understanding.This platform enables students to explore various modular hardware components,including power half-bridge modules,sampling conditioning modules,and auxiliary power supply modules,fostering a deeper interest in digital power supply development.Finally,the experimental processes are demonstrated in conjunction with the five-terminal DC demonstration project established on campus.This approach helps students recognize the practical application of theoretical knowledge and reinforces the engineering education philosophy of integrating theory with real-world practice.[Conclusions]This paper addresses the limitations of existing experimental teaching schemes in effectively demonstrating the multiport power coupling and decoupling control challenges of QAB converters.To overcome these challenges,a comprehensive experimental teaching framework encompassing full simulation,semiphysical simulation,low-power experimental prototypes,and engineering practice is developed.The experimental results show strong consistency across these platforms,validating the effectiveness of the approach.This structured methodology guides students through a progressive learning process that progresses from simple to complex concepts and from virtual to physical implementation.Overall,the feedforward compensation decoupling control strategy ensures a seamless transition from theory to practice,enhancing students’analytical abilities,hands-on skills,and overall comprehension of power electronics.Moreover,by integrating virtual and physical teaching,the strategy achieves highly effective learning outcomes.
作者
张超
马铭鸿
袁旭峰
熊炜
陆之洋
郑华俊
刘敏
ZHANG Chao;MA Minghong;YUAN Xufeng;XIONG Wei;LU Zhiyang;ZHENG Huajun;LIU Min(School of Electrical Engineering,Guizhou University,Guiyang 550025,China)
出处
《实验技术与管理》
北大核心
2025年第5期123-131,共9页
Experimental Technology and Management
基金
贵州大学本科教学成果奖培育项目(GZUJXCGPY202403)
国家自然科学基金项目(62461008)
贵州省基础研究计划青年引导项目(黔科合基础-[2024]青年101)
贵州省科技支撑项目(黔科合支撑[2024]一般049)。
关键词
四端口直流能量路由器
虚实结合
半实物仿真
QAB DC–DC energy router
virtual and real combination
hardware in loop simulation
