Design approach for a wireless power transfer system for wristband wearable devices

作者：Roshan Yaser M; Park Edward J

来源：IET Power Electronics, 2017, 10(8): 931-937.

DOI：10.1049/iet-pel.2016.0616

• inductive power transmission
• design
• coils
• optimisation
• inductance
• wireless power transfer system
• design approach
• charging wristband wearable devices
• planar circular coils
• lateral misalignments
• angular misalignments
• optimisation algorithm
• WPT system
• power transmitter coil
• mutual inductance variations

In this study, the design approach for wireless power systems in the application of charging wristband wearable devices is studied. As the power transfer efficiency relates to the system parameters, the design approach includes an analytical model for available wireless power in planar circular coils with lateral and angular misalignments, which is typically the case in these applications. The model is then utilised in an optimisation algorithm to design the wireless power system such that maximum available power is transferred through the system. The practicality of the proposed wireless power transfer (WPT) system design is analysed in terms of positioning the power transmitter coil on a bed, while performing the power transfer during a sleeping period of the wearer. Experimental results validate the analytical model of mutual inductance variations and demonstrate the performance of the WPT system for this application.

• 出版日期2017-6-30