分数阶无线电能传输机理的提出及研究进展

Proposal Process and Research Progress of Fractional-order Wireless Power Transfer Mechanism

现有的无线电能传输技术均是以整数阶系统理论为基础提出和构建的,传输特性对传输距离、系统参数变化敏感,抗干扰能力弱,难以适应实际应用需要。因此,探索新型无线电能传输机理和技术将是一个长期的研究课题。受益于分数阶微积分的快速发展,分数阶无线电能传输机理和技术被提出。不同于传统整数阶系统,分数阶无线电能传输系统利用其所特有的记忆特性、负电阻特性和频率特性,可以实现高效率、高抗干扰的中距离无线电能传输,且系统设计灵活,可以满足多种场合的需要。为此,文中介绍了分数阶无线电能传输机理的提出过程及研究进展,分别从分数阶微积分、分数阶元件及电路、分数阶无线电能传输机理等方面进行阐述。最后,与现有整数阶无线电能传输系统进行了对比,结果表明所提系统的传输效率和输出功率具有对距离和谐振频率变化不敏感的特性。

The existing technologies of wireless power transfer are proposed and constructed based on the theory of integer-order system. However, the transfer characteristics are sensitive to the transfer distance and the change of system parameters, and the anti-interference ability is weak, so it is difficult to adapt to actual application demands. Therefore, exploring new mechanisms and technologies of wireless power transfer is a long-term research topic. Benefiting from the rapid development of fractional-order calculus, the mechanism and technology of fractional-order wireless power transfer have been proposed. Different from the traditional integer-order system, the fractional-order wireless power transfer system is based on its unique memory characteristics,negative resistance characteristics, and frequency characteristics to achieve the medium-distance wireless power transfer with high efficiency and high anti-interference. The proposed system with flexible design can be adapted to the demands of various occasions.To this end, this paper introduces the proposal process and research progress of the fractional-order wireless power transfer mechanism, which are expounded from the aspects of fractional-order calculus, fractional-order components and circuits, and fractional-order wireless power transfer mechanism. Finally, the proposed system is compared with the existing integer-order wireless power transmission system. The results show that the transmission efficiency and output power of the proposed system are insensitive to the changes of distance and resonance frequency.