Long range inductive power transfer system

13th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Lawson, James^1 ; Pinuela, Manuel^1 ; Yates, David C.^1 ; Lucyszyn, Stepan^1 ; Mitcheson, Paul D.^1

Electronic and Electrical Engineering Department, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom^1

关键词: Class-E amplifier;    Coil configurations;    High frequency HF;    Inductive link;    Inductive power transfer systems;    Power transfer efficiency;    Remote sensors;    Resonant methods;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/476/1/012005/pdf
DOI  :  10.1088/1742-6596/476/1/012005

来源: IOP

【 摘 要 】

We report upon a recently developed long range inductive power transfer system (IPT) designed to power remote sensors with mW level power consumption at distances up to 7 m. In this paper an inductive link is established between a large planar (1 × 1 m) transmit coil (Tx) and a small planer (170 × 170 mm) receiver coil (Rx), demonstrating the viability of highly asymmetrical coil configurations that real-world applications such as sensor networks impose. High Q factor Tx and Rx coils required for viable power transfer efficiencies over such distances are measured using a resonant method. The applicability of the Class-E amplifier in very low magnetic coupling scenarios and at the high frequencies of operation required for high Q operation is demonstrated by its usage as the Tx coil driver.