论文信息 - Wireless power transfer system for docent robot by using magnetic resonant coils

Wireless power transfer system for docent robot by using magnetic resonant coils

A wireless power transmission system for 1.78MHz, 60W docent robot using coupled magnetic resonances is presented. The proposed wireless power transmission system consists of a 130W class-F power transmitter, two magnetic resonance couplers and 60W full bridge RF rectifier receiver. The transmitter is composed of DDS (Direct Digital Synthesizer) block, class-F power amplifier and VSWR measurement block to implement the frequency searching and power tracking function. Two magnetic resonance couplers are designed with a small spiral resonator. The diameter size of the spiral coil is 30 cm (1.8λ/1000). The receiver is composed of RF rectifier, overvoltage protection (OVP) with active dummy load and DC to DC converter. The charging power of the docent robot is about 48W and the entire DC to DC system efficiency of this WPT system is 54%.

[1] Seong-Wook Choi,et al. Coil‐Capacitor Circuit Design of a Transcutaneous Energy Transmission System to Deliver Stable Electric Power , 2008 .

[2] A. Ahlbom. Guidelines for limiting exposure to time-varying electric, magnetic, and electromagnetic fields (up to 300 GHz) , 1998 .

[3] M. Kivikoski,et al. Low-profile circularly polarized rectifying antenna for wireless power transmission at 5.8 GHz , 2004, IEEE Microwave and Wireless Components Letters.

[4] M. Soljačić,et al. Wireless Power Transfer via Strongly Coupled Magnetic Resonances , 2007, Science.

[5] Chunyu Zhao,et al. Feedback Analysis of Transcutaneous Energy Transmission with a Variable Load Parameter , 2010 .

[6] Reinhard Kulke,et al. 40 GHz Vertical Transition with a Dual‐Mode Cavity for a Low‐Temperature Co‐fired Ceramic Transceiver Module , 2010 .

[7] Alanson P. Sample,et al. Analysis , Experimental Results , and Range Adaptation of Magnetically Coupled Resonators for Wireless Power Transfer , 2010 .