Analysis of multiple‐TX WPT systems using KVL and RX‐side RLT

• DOI: 10.1049/iet-map.2018.5698
• Publication Date: 2019-05-30T02:37:39Z
• Authors: Jin Zhang; Chonghu Cheng; Kai Chen; Fangfang Wang; Yingjie Gao
• Keywords: Wireless Power Transfer

Wireless power transfer (WPT) system with multiple transmitters (TXs) and one receiver (RX) can effectively enlarge the range of transmission region. The delivered to load (PDL) efficiency (PTE) two-TX WPT has been intensively studied in past few years. To achieve a wider transmission, multiple-TX should be investigated urgently. Using Kirchhoff's voltage law (KVL) RX-side reflected theory (RLT), this study analyses general single-RX systems detail. explicit closed-form equations for highest PDL, PTE corresponding optimal loads are derived from two methods. constraint feeding amplitude ratios need equal mutual inductance deduced KVL; on other hand, inspired by TX-side RLT using multiple-RXs system, is first proposed readily derive compared KVL. Numerical simulations three- four-TX implemented intuitively illuminate theoretical analysis. Experiments two-, have verified accuracy