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首页> 外文期刊>Solar Energy >High-efficiency grid-connected photovoltaic module integrated converter system with high-speed communication interfaces for small-scale distribution power generation
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High-efficiency grid-connected photovoltaic module integrated converter system with high-speed communication interfaces for small-scale distribution power generation

机译：具有高速通信接口的高效并网光伏模块集成转换器系统，用于小规模分布式发电

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摘要

This paper presents a high-efficiency grid-connected photovoltaic (PV) module integrated converter (MIC) system with reduced PV current variation. The proposed PV MIC system consists of a high-efficiency step-up DC-DC converter and a single-phase full-bridge DC-AC inverter. An active-clamping flyback converter with a voltage-doubler rectifier is proposed for the step-up DC-DC converter. The proposed step-up DC-DC converter reduces the switching losses by eliminating the reverse-recovery current of the output rectifying diodes. To reduce the PV current variation introduced by the grid-connected inverter, a PV current variation reduction method is also suggested. The suggested PV current variation reduction method reduces the PV current variation without any additional components. Moreover, for centralized power control of distributed PV MIC systems, a PV power control scheme with both a central control level and a local control level is presented. The central PV power control level controls the whole power production by sending out reference power signals to each individual PV MIC system. The proposed step-up DC-DC converter achieves a high-efficiency of 97.5% at 260 W output power to generate the DC-link voltage of 350 V from the PV voltage of 36.1 V. The PV MIC system including the DC-DC converter and the DC-AC inverter achieves a high-efficiency of 95% with the PV current ripple less than 3% variation of the rated PV current.
机译：本文提出了一种具有减小的PV电流变化的高效并网光伏（PV）模块集成转换器（MIC）系统。拟议的PV MIC系统由一个高效升压DC-DC转换器和一个单相全桥DC-AC逆变器组成。提出了一种具有倍压整流器的有源钳位反激式转换器，用于升压型DC-DC转换器。所提出的升压型DC-DC转换器通过消除输出整流二极管的反向恢复电流来降低开关损耗。为了减少并网逆变器引入的PV电流变化，还提出了减小PV电流变化的方法。建议的PV电流变化减小方法可减少PV电流变化，而无需任何其他组件。此外，对于分布式PV MIC系统的集中式功率控制，提出了一种既具有中央控制级又具有本地控制级的PV功率控制方案。中央PV功率控制级别通过向每个单独的PV MIC系统发送参考功率信号来控制整个功率生产。拟议的升压型DC-DC转换器在260 W输出功率下可实现97.5％的高效率，从而可从36.1 V的PV电压生成350 V的直流母线电压。包括DC-DC转换器的PV MIC系统DC-AC逆变器可实现95％的高效率，且PV电流纹波小于额定PV电流变化的3％。

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  • 来源
    《Solar Energy》 |2010年第4期|p.636-649|共14页
  • 作者

    Woo-Young Choi; Jih-Sheng (Jason) Lai;

  • 作者单位

    Future Energy Electronics Center, Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA;

    Future Energy Electronics Center, Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    photovoltaic (PV); module integrated converter (MIC); step-up DC-DC converter; full-bridge inverter; high-efficiency;

    机译：光伏（PV）模块集成转换器（MIC）;升压DC-DC转换器;全桥逆变器;高效率;

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