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首页> 外文期刊>Power Electronics, IET >Modelling analysis and power loss of coupled-inductor single-stage boost inverter based grid-connected photovoltaic power system
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Modelling analysis and power loss of coupled-inductor single-stage boost inverter based grid-connected photovoltaic power system

机译：基于耦合电感的单级升压逆变器并网光伏发电系统的建模分析与功率损耗

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摘要

The coupled-inductor single-stage boost inverter (CI-SSBI) has been proposed and applied to photovoltaic (PV) power system. As previously presented, the CI-SSBI has the feature of stepping up input voltage to a higher voltage level by properly designing the turns ratio of coupled inductor and regulating the shoot-through duty cycle. The CI-SSBI based grid-connected PV system integrates some characteristics together in one stage, including boost inversion, feeding current into the grid with high power factor, and maximum power point tracking. Moreover, system reliability can be improved by using the shoot-through zero states as a normal operation mode. This study focuses on the power loss analysis of main elements, and control analysis of both bus voltage loop and inner current loop of the proposed PV system. Simulation and experimental results are presented to verify the analysis and show the real system performance.
机译：已提出耦合电感单级升压逆变器（CI-SSBI），并将其应用于光伏（PV）电力系统。如前所述，CI-SSBI具有通过适当设计耦合电感器的匝数比并调节直通占空比来将输入电压升压至更高电压的功能。基于CI-SSBI的并网光伏系统将某些特性集成在一起，包括升压逆变，以高功率因数将电流馈入电网以及最大功率点跟踪。此外，通过将直通零状态用作正常操作模式，可以提高系统可靠性。本研究着重于所提出的光伏系统主要元件的功率损耗分析，以及母线电压环路和内部电流环路的控制分析。给出了仿真和实验结果，以验证分析结果并显示实际系统性能。

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