Zhang Ziqi
School of Design, Shanghai Jiaotong University, Shanghai 310058, China.
J Adv Res. 2020 Apr 30;25:227-234. doi: 10.1016/j.jare.2020.04.013. eCollection 2020 Sep.
The wired power transmission is usually adopted to supply power for the devices in the traditional buildings. With the development of intelligent buildings, the way of wired power supply would greatly increase the complexity and consumption of laying the lines. To improve the flexibility of power supply and reduce the cost of wiring, wireless power transfer technology has been used in smart buildings. However, it remains a fundamental challenge to create a simple wireless power transfer system in which power can be wirelessly transferred to multiple appliances. Therefore, this paper proposes a wireless power transfer scheme based on fractional-order time-sharing control for a variety of household appliances in intelligent building. In the proposed scheme, only one fractional-order capacitor in the transmitter is needed to realize the time-sharing resonant charging. In contrast, the traditional multiple-receiver systems require complicated control scheme, for example, controlling a plurality of sets of series-parallel capacitors through a series of relay switches. To demonstrate the method, a 150 W LED TV with 300 kHz and a 5 W mobile phone charger with 127 kHz serve as the actual loads. The experimental results show that the proposed system can supply power to the TV and the mobile phone by a time-sharing way wirelessly.
传统建筑中的设备通常采用有线电力传输来供电。随着智能建筑的发展，有线供电方式将大大增加线路铺设的复杂性和成本。为了提高供电灵活性并降低布线成本，无线电能传输技术已应用于智能建筑。然而，创建一个能将电能无线传输到多个电器的简单无线电能传输系统仍然是一个基本挑战。因此，本文针对智能建筑中的多种家用电器，提出了一种基于分数阶分时控制的无线电能传输方案。在所提出的方案中，发射器仅需一个分数阶电容器即可实现分时谐振充电。相比之下，传统的多接收器系统需要复杂的控制方案，例如，通过一系列继电器开关控制多组串并联电容器。为验证该方法，以一台150W、300kHz的LED电视和一个5W、127kHz的手机充电器作为实际负载。实验结果表明，所提出的系统能够以分时方式为电视和手机无线供电。
