摘要
为了提高磁耦合谐振式无线电能传输的稳定性,在分析磁耦合谐振式原理的基础上,建立模型并展开传输特性分析。研究结果表明:当系统以谐振频率180kHz进行工作时,随耦合系数的增大,系统将获得更大的传输效率,并且负载值改变并不会引起系统传输效率的明显变化。对各负载条件下的传输效率与输出功率进行综合考虑可知,提出的谐振补偿方法更加适合RL=280Ω负载。在较小的耦合系数以及较大的传输距离下,系统以自谐振频率进行工作时谐振补偿结构能够实现大功率输出。谐振补偿结构对应的反映电抗等于0,判断发射线圈端形成了固定的谐振补偿电容。当谐振补偿结构中负载RL增大后,在自谐振频率下发射端谐振补偿电容C1不会受到影响。
To develop the stability of magnetically coupled resonant wirele power transfer,the model is established and the transmiion characteristics are analyzed,based on the analysis of the principle of magnetic-coupled resonant.The results show that when the system operates at a resonant frequency of 180kHz,with the increase of the coupling coefficient,the system will obtain greater transmiion efficiency,and the change of the load value will not cause a significant change in the transmiion efficiency of the system.On the load transfer efficiency and output power under the condition of comprehensive consideration,the proposed resonance compensation method is more suitable for R L=280Ω load.With a small coupling coefficient and a large transmiion distance,the resonant compensation structure can achieve high power output when the system operates at a self-resonant frequency.The reflection reactance correonding to the resonant compensation structure is equal to 0,and it is judged that the transmitter coil end forms a fixed resonant compensation capacitor.When the load R L in resonant compensation structure increases,the resonant compensation capacitor C 1 at the transmitter will not be affected under self-resonant frequency.
作者
张红辉
Zhang Honghui(HengYang Technician University,Hengyang 421000,China)
出处
《电子测量技术》
2019年第17期23-26,共4页
Electronic Measurement Technology
关键词
耦合谐振系统
电能传输
传输特性
建模分析
coupled resonance system
power transmiion
transmiion characteristics
modeling analysis
