Selective Detuning Energy Information Integration Method for DC Microgrid DC-DC Converter

The integration of energy information refers to the synchronous transmission of information while transmitting power by the traditional power electronic converter. Since the fixed Frequency carrier used when no information is transmitted will produce harmonics related to it, which will cause great harm to the equipment, in order to avoid the influence of the harmonics of fixed frequency and frequency doubling when no information is transmitted, this paper proposes Binary Frequency Shift Keying with specific subharmonic elimination. 2FSK) Energy information integration method, using specific tuned carrier as power carrier when no information is transmitted; When transmitting information, the carrier of its corresponding frequency is switched according to the digital signal 0 or 1 for data transmission, and the information transmission rate is as high as 20kbit/s. In the demodulation part, the paper samples the extreme value points and sets the threshold to demodulate. This method can quickly complete the sampling calculation and demodulate the original data, and reduce the system delay time. Finally, the feasibility of the above method is verified by simulation and experiment.