Design and implementation of a SIMO DC–DC converter

Abstract

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.

Three-Output Flyback Converter with Synchronous Rectification for Improving Cross-Regulation and Efficiency

“…For reference [11] it is necessary to develop an RCD snubber to absorb the energy of leakage inductance. References [12][13][14][15][17][18][19] require an expensive controller to implement. References [16,21] require a transformer for each output.…”

“…To mitigate the cross-regulation effect, [17] employs a coupled inductor for dual-output DC-DC converters. Reference [18] adopts 5 switches to achieve two outputs voltage which are regulated independently and not affected by the variation of load current. Vo1 presents the fly-buck [19] converter in buck mode, and Vo2 in flyback mode, then realizes lower cross-regulation.…”

A non‐isolated single‐input dual‐output boost DC–DC converter

“…In [18] a MIMO converter has been presented. The converter uses buck converters at input stage and current‐source mode buck cells at the output stage.…”

Fault tolerant architecture of an efficient five‐level multilevel inverter with overload capability characteristics

“…Multilevel inverters (MLIs) offer numerous advantages over the conventional two-and three-level inverters. Some of those advantages are increased quality of the output voltage and current waveform, lower total harmonic distortion, lower voltage stress on the power switches, higher efficiency and higher switching frequency [1][2][3]. It leads to its wide use in high power applications such as renewable energy systems [4,5] and hybrid energy systems [6,7].…”