Design of double-layer parallel printed spiral coil for Wireless Power Transfer applied to rotating equipment

摘要: Abstract Wireless power transfer (WPT) is a promising technology for remotely powering wide variety of applications in rotating electronic devices. Although this method was introduced long time ago, it still faces several challenges. The main challenge that the traditional Litz coil cannot be fixed high-speed equipment, and existing single-layer printed spiral has low quality factor. Therefore, to increase coils’ factor improve transmission efficiency output system, novel double-layer parallel model proposed compared with conventional coil. Through experimental validations simulation analysis, study shows that, when system frequency 100 kHz employed, enhanced by 57.4 % In case an input voltage 8 V distance 10 mm, double-double increased 1.65 W single-single coil, 22.5 %, thereby realizing efficient WPT providing reliable sensors on machinery such as helicopters aero engines.