Spread Spectrum Based Power Line Communication and EM Noise Reduction Technique for Bidirectional HB CLLC Resonant Converter

In the previous research, the resonant converter have not integrated the EM noise reduction and the PLC capability in a single power converter. In this paper, the extension of the converter functionality is proposed with the combination of a power line communication (PLC) and the electro-magnetic (EM) noise reduction in the bidirectional halfbridge CLLC resonant converter. The designed converter shows the output voltage regulation, the PLC capability, and the EM noise reduction, simultaneously. This technical fusion using the spread spectrum technique (SST) makes design constraints to implement each functions. Therefore, the design methodology of proposed converter is necessary to implement the triple functions. The performance of the proposed triple functional converter is experimentally verified by using a 20-W prototype converter.