Consideration and implementation of pulse density modulation control for class-E rectifier <Abstract> The class-E rectifier has attracted a lot of attention because of its high power-conversion efficiency operation at high frequencies. The thinned-out method has been proposed as one of the control methods for the class-E rectifier. However, it is generally difficult to implement this control method for high frequency-operated rectifiers and there is no study to implement this control method. In this paper, the pulse density modulation (PDM) control method for the class-E rectifier is presented. It is not necessary to implement a diode voltage detection circuit in the proposed control method. Namely, this method can be easily implemented even for high frequency-operated class-E rectifier. As an example of its implementation, the DC-DC converter, which consists of the class-D inverter and the class-E rectifier, is controlled by the proposed method in this paper. By carrying out the circuit experiments, the performances of the proposed method are evaluated. |