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首页> 外文期刊>Power Electronics, IET >Coupled inductor-based single-stage high gain DC–AC buck–boost inverter
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Coupled inductor-based single-stage high gain DC–AC buck–boost inverter

机译：基于电感的单级耦合高增益DC-AC降压-升压型逆变器

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摘要

Two stage conversion systems (TSCSs) normally use either boost converter or high gain dc–dc converter along with dc–ac inverter in order to transfer power from low input voltage dc source to high voltage ac load. When these TSCSs operate at extremely low input voltages, the boost converter has to operate at extremely high duty ratios. This in turn results in more losses and reverse recovery problems. Usage of high gain dc–dc converter results in more number of components, increase in control complexity and decrease in reliability. Single-stage conversion systems (SSCSs) are formed by merging both dc–dc and dc–ac conversion processes. These SSCSs have advantages like low loss, more compactness and less reverse recovery problems. In this study, a high gain coupled inductor-based single-phase SSCS is presented. This SSCS topology has many desirable features such as high gain, less switching losses, free from leakage inductance adverse effects and compact. Principle of operation, steady-state analysis and design of the proposed topology are described in detail. MATLAB simulation results of the proposed topology and experimental results using DSP28335-based experimental setup are presented to validate the proposed scheme.
机译：两级转换系统（TSCS）通常将升压转换器或高增益dc-dc转换器与dc-ac逆变器一起使用，以便将功率从低输入电压dc电源传输到高压ac负载。当这些TSCS在极低的输入电压下工作时，升压转换器必须在极高的占空比下工作。这进而导致更多损失和反向恢复问题。使用高增益dc-dc转换器会导致更多的组件，增加控制复杂性并降低可靠性。单级转换系统（SSCS）是通过合并dc-dc和dc-ac转换过程而形成的。这些SSCS具有诸如低损耗，更紧凑和更少的反向恢复问题的优点。在这项研究中，提出了一种基于高增益耦合电感的单相SSCS。这种SSCS拓扑具有许多理想的特性，例如高增益，较少的开关损耗，不受泄漏电感的不利影响并且结构紧凑。详细介绍了工作原理，稳态分析和拟议拓扑的设计。给出了所提出的拓扑的MATLAB仿真结果和使用基于DSP28335的实验设置进行的实验结果，以验证所提出的方案。

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