Multiport converters have tremendous performance over conventional solutions that employ multiple single converters in multi-input and multi-output applications. Furthermore, they provide the most economic operation and improve the performance of the system. Hence, in the recent past, a lot of development and research have been carried out for developing the single-input-multi-output (SIMO) converters in various aspects which are presented in the study. These topologies have some assumptions which are made on the charging of inductor current and design of duty cycle for achieving multiple outputs. In this study, an SIMO DC-DC converter is proposed. It independently regulates both the outputs at different voltage levels and none of the assumptions are made on the basis of inductor charging currents (i L1 > i L2 or i L1 < i L2). Cross-regulation problems do not exist, so the output voltage V 01 (V 02) is not influenced by the variation of load current i 02 (i 01), also the proposed converter has the ability to avoid the common grounding problems between the outputs. Low-power (200 W) prototype circuit is developed to verify the feasibility of the proposed converter and the experimental results are validated with simulation results.

Multiport converters play a significant role in portable electronic and electric vehicle (EV) applications. In literature, different configurations of single-input multi-output (SIMO) converters are presented. Most of the SIMO converters generate the outputs with operating constraints on the duty ratio and charging of inductors. The cross-regulation problem is still a challenge in SIMO converters design. A SIMO topology is proposed in this study to overcome the limitations mentioned earlier. It can generate three different output voltages without constraint on the duty cycle and inductor currents (like iL1 > iL2 > iL3 or iL1 < iL2 < iL3). Cross regulation problems do not exist in the proposed topology, so the load voltage V01 (V02) (V03) is not affected by the variation of output current i03 (i02) (i01). The loads are isolated from each other during control. In the laboratory, a 200 W prototype circuit is developed; simulation and experimental results are validated.INDEX TERMS Multiport converters, single input multi output converters.

Summary Multi‐input converters (MICs) play an important role in integrating the independent energy sources utilized in the grid‐connected system and electric vehicle applications. In this scenario, several types of MICs are presented in the literature. Most of the MICs are operated using a time‐sharing scheme. This leads to a restricted duty cycle which limits the energy source utilization and output voltage. To overcome the above‐mentioned limitations, a multi‐input single‐output converter is proposed. The utilization of energy sources and output voltage can be improved with a reduction in the part count. A 400 W prototype is designed to check the feasibility of the proposed system, and the subsequent simulation and experimental results are validated.

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A compact DC-DC converter is required as an auxiliary power module in Electric Vehicles (EVs) to power the onboard electric motor and other auxiliaries. Most of the existing multi-port converters have limitations on duty ratio, charging currents of the inductor (iL1>iL2 or iL1V02 or V01

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