Journal
2020 22ND EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'20 ECCE EUROPE)
Volume -, Issue -, Pages -Publisher
IEEE
DOI: 10.23919/epe20ecceeurope43536.2020.9215629
Keywords
Differential-based flyback inverter (DBFI); Continuous Modulation Scheme (CMS); Static Linear Method (SLM); Flyback high-frequency transformer (FB-HFT); Negative-sequence second-order harmonic component (NS-SOHC)
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This paper offers mathematical analysis, design, and experimental verification of three-phase differential-based flyback inverter (DBFI) based-on SiC-MOSFET for photovoltaic (PV) applications. The DBFI utilizes continuous modulation-scheme (CMS) combined with the static linearization method (SLM), for low-order harmonics mitigation, based-on a simple and low-cost flyback converter. In addition, design investigations are detailed for the high-power isolated single-stage inverter. Therefore, the paper reveals the design practical issues of the DBFI such as; power-stage design, HFT-based Nano-Crystalline Core design, passive elements selection, harmonics compensation strategy. The system is simulated by PSIM computer-aided simulator. Consequently, the 1.6 kW, 200 V, 50 kHz DBFI prototype has been experimentally validated with and without negative-sequence second-order harmonic component (NS-SOHC).
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