模块化多端口无线电能DC-DC变换器建模及其多向功率流解耦控制策略  

Modular Multiport Wireless DC-DC Converter with Multidirectional Power Flow and Its Decoupling Control Strategy

作　　者：宋钊 刘明 Song Zhao;Liu Ming(Department of Electrical Engineering School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University,Shanghai 200240 China)

机构地区：[1]上海交通大学电子信息与电气工程学院电气工程系,上海200240

出　　处：《电工技术学报》2022年第24期6262-6271,共10页Transactions of China Electrotechnical Society

基　　金：上海市自然科学基金项目(21ZR1431100);台达电力电子科教发展基金项目资助。

摘　　要：多端口无线电能DC-DC变换器(MWiDC)具备实现可灵活扩展的高效率多端口功率变换的潜力,但其系统建模与功率流控制缺乏一般性理论。为扩充相关理论,该文提出一种模块化MWiDC架构。首先,建立MWiDC的一般性数学模型。在此基础上,提出一种电压功率混合解耦控制策略,并给出该策略下闭环系统直流增益、高频特性和稳定性的数学证明。作为比较,该文对不解耦直接控制策略也进行理论分析,此时闭环系统过于复杂,其稳定性有待证明。最后,以一台三端口原型机为例进行硬件实验及仿真分析。实验结果表明,在不同输入/输出配置或线圈偏移工况下,原型机能实现零电压开关,系统效率可达91%。仿真结果表明,两种控制策略都能实现电压功率混合控制,但解耦控制策略具有更强的抗干扰性。Multiport wireless DC-DC converter(MWiDC)has the potential to realize efficient multiport power conversion with high-level flexibility and expansibility.However,its system modeling and power flow management need more general theory.Therefore,this paper proposes a modular MWiDC.Firstly,a model of an arbitrary MWiDC is established,and a power-voltage hybrid decoupling control(PVHDC)strategy is designed.The closed-loop DC gain,high-frequency characteristic,and stability under the PVHDC strategy are demonstrated.This paper also analyzes the direct control strategy(DCS)without decoupling for comparison.However,the closed-loop stability of the DCS still needs to be proved due to the system’s complexity.Finally,the experiment and simulations are carried out on a three-port prototype.The experimental results show that the prototype can realize zero voltage switching with an efficiency of 91%.The simulation indicates that both PVHDC and DCS can realize voltage-power hybrid control,but PVHDC has a stronger anti-disturbance.

关 键 词：多端口DC-DC变换器 无线电能传输 解耦控制 多向功率流 

分 类 号：TM724[电气工程—电力系统及自动化]