Design and Implementation of an Isolated Single-Input Multi-Output (SIMO) Flyback Converter for Supplying a 5-Level Cascaded H-Bridge Multilevel Inverter
Desain dan Implementasi Flyback Single-Input Multi-Output (SIMO) Konverter Terisolasi untuk Suplai Inverter Multilevel Cascaded H Bridge 5-Level
DOI:
https://doi.org/10.21070/ups.11390Keywords:
Cascaded H-Bridge, DC-DC Converter, Dual SMPS, Multilevel Inverter, SIMO Flyback ConverterAbstract
Cascaded H-Bridge (CHB) multilevel inverters require isolated DC sources for each level, increasing system complexity and cost as the number of levels increases. This study develops a Single-Input Multiple-Output (SIMO) Flyback Converter as a simpler and more economical isolated DC source for a 5-Level CHB inverter. The experimental method included design, realization, integration, and system testing. The SIMO Flyback uses one ferrite transformer with two isolated outputs. Testing evaluated output voltage, cross regulation, efficiency, ripple, and the effects of load and duty cycle variations, with comparison to two Switching Mode Power Supplies (SMPS). Results show that the SIMO successfully operated the inverter and produced a 5-level waveform. At loads of 330–10 Ω, output power reached 6.67–24.09 W with 79.35–85.71% efficiency, while output voltage was 15.52–16.30 V. Two SMPS produced 27.04 W at 22.70–24.00 V. The SIMO reduced implementation cost by 58.71%.
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