DC-DC Converter and Its Multiport Interface

DC-DC power conversion, ranging from voltfraction to ten of kVs, and mWs-MWs, is found in various applications, the latter making a human's life comfortable. DC motor drives [1], telecommunications [2], satellite [3], fuel cell electric vehicles [4], are among many other such applications. The literature reports a large number of topology, and design variants of a DC-DC converter (DDC) as in [5]-[17] and references within, to achieve an improvement in the efficiency [18] of the DC-DC power conversion. The advent of novel configurations enables the DDC to make a shift from conventional single-input-single-output (SISO) based two-port DDC configuration to the multi-input-multi-output (MIMO) based multiport designs. This article highlights the need of this structure shift by detailing the SISO, multi-input-single-output (MISO), single-input-multi-output (SIMO), and the MIMO DDC structures. Afterward, this brief discusses time-domain simulations of each of these structures to confirm the aforesaid structure shift.