Single-Phase Simplified Split-Source Inverter (S³I) for Boost DC–AC Power Conversion

Abstract

The single-phase split-source inverter is an emerging and attractive topology for boost dc-ac power conversion system. Such an inverter features high compactness, however, at the expense of high-frequency commutations across diodes. The corresponding hybrid PWM also confines the voltage harmonics to concentrate around the switching frequency and its multiples. This paper proposes a simplified split-source inverter which is realized by inserting only one power switch into an Hbridge. While generating the ac output, the newly developed PWM strategy ensures the inductor charged with constant duty-cycle. When compared to the existing split-source inverters, it offers the added benefits of reduced switch count, enhanced voltage boosting gain, reduced output filter requirement, and enhanced power efficiency. Comprehensive steady-state analysis is discussed while simulation and experimental results are subsequently presented to prove the validity of the proposed topology and the PWM strategy.Index Terms-Boost dc-ac power conversion, singlestage inverter, split-source inverter, pulse width modulation.

Modified split‐source inverter with single‐phase dual power decoupling

“…3. By next substituting (10) to (8), voltages across C 1 and C 2 can be determined for finding their second-order oscillating powers as given as follows:…”

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9s-Ssi: Proposta, Análise E Modulação

“…Esse inversor emprega uma nova forma de otimizar o conversor de seis chaves convencional [11] após a ascensão da topologia ZSI e suas derivações. Entretanto, a etapa de ganho veio a ser explorada em 2018 na topologia nomeada de S 3 I [12]. Diversas ramificações da estrutura SSI surgiram no decorrer dos últimos anos, tanto para a versão trifásica como monofásica [12]- [17].…”

“…Entretanto, a etapa de ganho veio a ser explorada em 2018 na topologia nomeada de S 3 I [12]. Diversas ramificações da estrutura SSI surgiram no decorrer dos últimos anos, tanto para a versão trifásica como monofásica [12]- [17].…”