Integration of Multiple-Input and Multiple-Output Wireless Power Transfer System on Smith Chart to Achieve High Efficiency

• Main Authors: Yen-Hsiang Chang, 張硯翔
• Other Authors: 許恒銘
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/59xy9b

碩士 === 國立中興大學 === 電機工程學系所 === 107 === This study proposes a design algorithm to implement a multiple input and multiple output (MIMO) wireless power transfer (WPT) system. Mainly used in the Airfuel standard 13.56 MHz frequency under the magnetic resonance system, including the transmitter class E power amplifier (PA), PCB based magnetic resonant coil, and the receiver is class E rectifier. This paper divides the wireless power transfer (WPT) system into three parts, first part is the transmitter class-E power amplifier, second part is magnetic resonance coil, and third part is the receiver class-E rectifier. The principle of the operation, the derivation and the circuit simulation are made for each part. First, optimized design for each circuit, then analyzed impedance relationship between the each stage to link the entire system, finally discussed the high-efficiency operation of the system. This paper proposed a method of analysis and simulation for WPT system. The characteristic of transmitters, coils and receivers are all displayed on the Smith chart to observe of the circuit operating point, thereby achieving a wide load range and high efficiency wireless power transfer system.