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    • 2. 发明授权
    • Wireless power transmitter with multilayer printed circuit
    • 带多层印刷电路的无线电力变送器
    • US08228027B2
    • 2012-07-24
    • US12578491
    • 2009-10-13
    • Qiang Gao
    • Qiang Gao
    • H02J7/00
    • H02J50/12H02J7/025
    • A wireless transmission system having a transmitter and receiver is described. In one embodiment, the transmitter includes an electronically-controlled switch controlled by a first pulse width modulation control circuit, the switch configured to pull current through a first inductor when the switch is closed, the first pulse width modulation control circuit outputting a PWM output signal to control the switch. A first feedback signal obtained from a control input of the switch. A second feedback signal obtained from a terminal of the inductor, wherein a control feedback signal is computed, at least in part, as a difference between the first feedback signal and the second feedback signal is provided to the first pulse width modulation control circuit. In one embodiment, the receiver includes a second pulse with modulation controller, the second pulse width modulation controller controlling the receiver switch to deliver a desired power from the receiving coil to a load.
    • 描述了具有发射机和接收机的无线传输系统。 在一个实施例中,发射机包括由第一脉冲宽度调制控制电路控制的电子控制开关,该开关被配置为当开关闭合时拉电流通过第一电感器,第一脉宽调制控制电路输出PWM输出信号 来控制开关。 从开关的控制输入端获得的第一反馈信号。 从电感器的端子获得的第二反馈信号,其中至少部分地计算控制反馈信号,因为第一反馈信号和第二反馈信号之间的差被提供给第一脉冲宽度调制控制电路。 在一个实施例中,接收机包括具有调制控制器的第二脉冲,第二脉冲宽度调制控制器控制接收器开关以将期望的功率从接收线圈传送到负载。