A contactless electrical energy transmission system for portable-telephone battery chargers
A contactless electrical energy transmission system for portable-telephone battery chargers
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DOI：
10.1109/tie.2003.812472
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发表时间：
2003-06-01
影响因子：
7.7
通讯作者：
Jovanovic, MM
中科院分区：
文献类型：
--
作者：
Jang, YT;Jovanovic, MM
描述了一种采用感应能量传输原理的高性能非接触电能传输（CEET）技术。所提出的技术能够实现适用于宽输入和负载范围应用的高效、高功率密度、完全调节的CEET系统。通过将变压器漏感中存储的能量纳入电路运行来回收该能量，并采用允许通过变压器进行可控双向功率流的高频逆变器和可控整流器拓扑结构，实现了系统的高效率。此外，逆变器采用前馈可变开关频率控制，以便在输入电压变化时保持通过变压器的功率传输大致恒定，而输出侧整流器采用局部脉宽调制控制，以便在负载变化时实现对输出的严格调节。具体而言，所述CEET系统适用于通用输入电池充电器。
A high-performance contactless electrical energy transmission (CEET) technique which employs the inductive energy transmission principle is described. The proposed technique enables the implementation of high-efficiency high-power-density, fully regulated CEET systems suitable for applications with a wide input and load range. A high efficiency of the system is achieved by recovering the energy stored in the leakage inductances of the transformer by incorporating them in the operation of the circuit, and by employing high-frequency-inverter and controlled-rectifier topologies that allow a controlled bidirectional power flow through the transformer. In addition, it feedforward variable-switching-frequency control of the inverter is used to maintain approximately constant power transfer through the transformer with the input voltage changes, whereas the output-side rectifier employs a local pulsewidth-modulation control to achieve a tight regulation of the output in the presence of load variations. Specifically, the described CEET system is suitable for use in universal-input battery chargers.