Design and implementation of a packeted DC power system using a modified power packet structure

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Journal Article
IET Power Electronics, 2018, 11 (9)
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© The Institution of Engineering and Technology 2018. Recently, energy internet is introduced aiming to improve power system reliability, security and efficiency through advanced information and power electronic technologies. Power packet (PP) distribution system which integrates information transfer into electric power transfer is a potential candidate for energy internet implementation. It can reduce stand-by power, eliminate voltage conversion stage in the traditional power distribution system, and actively control the load demand intelligently from the source side. This paper improves three areas of the existing PP distribution system, namely (i) a systematic approach to selecting the energy buffer based on the payload, identification bits, the load resistance and bit rate; (ii) a new algorithm to transfer PPs using a modified PP structure to the targeted loads with reduced footer bit, hence it can reduce more than 50% of the switching loss and information overhead; (iii) a simplified algorithm for a mixer to generate PPs according to multiple load requests. Experimental results of the improved packeted DC power system are reported.
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