宽负载范围内具有高能量效率的可重构无线电能传输系统

Optimum energy efficiency in a wireless power transfer (WPT) system usually occurs only at a specific load value while the load such as a battery is normally not constant. A major challenge in WPT is, therefore, to achieve high energy efficiency over a wide load range. Previously, impedance transformation methods such as dc-dc converters and use of a relay coil have been used to transform the prac...