Abstract
In this letter, a single-input and regulatable multi-output (SIRMO) wireless power transfer (WPT) system is presented. In particular, the system uses positive and negative half-wave rectifiers and a synchronous rectifier to realize multiple output channels. Each output channel is controllable, providing a flexible wireless charger to meet various charging requirements. Moreover, this system utilizes the inherent half-wave-rectifier channels (#B and #C) to detect synchronous signals for the rectifiers rather than using additional synchronous detection circuits, thereby leading to a cost-effective system. Finally, a 300W laboratory prototype is contrasted with three voltage levels, i.e., 48V, 30V, and 24 V. With the help of the control logic, this system shows excellent robustness against different occasions such as load variations, input disturbance and misalignment. The overall efficiency ranges from 86.7% to 90.6%.
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