MCR-WPT系统输出功率优化控制研究  

Research on output power optimization control of MCR-WPT system

作　　者：万小波 周子梦 刘宝泉 娄建勇[2] WAN Xiaobo;ZHOU Zimeng;LIU Baoquan;LOU Jianyong(Shaanxi Univ.of Science&Technology,Xi′an 710021,China;Xi′an Jiaotong Univ.,Xi′an 710049,China)

机构地区：[1]陕西科技大学,西安710021 [2]西安交通大学,西安710049

出　　处：《海军工程大学学报》2025年第2期69-77,共9页Journal of Naval University of Engineering

基　　金：陕西省自然科学基金资助项目(2024JC-YBMS-346,2023-JC-YB-381)。

摘　　要：在磁耦合谐振式无线电能传输过程中,传输距离的变化会导致线圈间的互感发生变化,进而使系统的反射阻抗发生变化,最终导致系统无法以最大输出功率输出。因此,提出了利用反射阻抗理论的两种功率优化控制策略,即在发射端通过移相控制优化功率和在接收端添加DC/DC变换控制优化功率。首先,研究了反射阻抗与输出功率的关系,并阐明了两种功率优化控制策略的原理;然后,通过Matlab/Simulink搭建仿真模型并进行了研究和实验验证。研究结果表明:传输距离在5 cm、25 cm时,通过调节移相角或DC/DC变换,传输功率分别至少增加了1.17 W、0.19 W;实验与仿真之间输出功率的最大误差不超过3%,证明了这两种利用反射阻抗理论的优化控制策略均能有效实现输出功率的优化。In the process of magnetic coupling resonant wireless power transmission(MCR-WPT),the change of transmission distance will lead to the change of mutual inductance between coils,resulting in the change of reflected impedance of the system,which in turn makes the system unable to output maximum output power.In view of this,two power optimization control strategies based on the reflected impedance theory were proposed:namely,phase shifting control for optimizing power at the transmitter end and DC/DC conversion control for optimizing power at the receiver end.Firstly,the relationship between reflected impedance and output power was studied,and the principles of two power optimization control strategies were expounded.Then,A simulation model was developed using Matlab/Simulink,and simulation studies and experimental verification were conducted.The research results show that the transmission power increased by at least 1.17 W and 0.19 W by adjusting the phase shift angle or DC/DC conversion at transmission distances of 5 cm and 25 cm,and the maximum error between the output power of the experiment and simulation is less than 3%,proving that both the power optimization control strategies based on reflection impedance theory can effectively achieve optimization of output power.

关 键 词：磁耦合谐振式无线电能传输 反射阻抗 功率优化 移相控制 DC/DC变换控制 

分 类 号：TM724[电气工程—电力系统及自动化]