• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Power Electronics, IET >1500 V three-level forward converter with phase-shifted control
【24h】

1500 V three-level forward converter with phase-shifted control

机译：1500 V三电平正激转换器，具有相移控制

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A 1500 V three-level forward converter with phase-shifted control is proposed to meet the requirements on medium- and high-voltage DC bus of photovoltaic grid-connected system. The architecture of 1500 V DC bus is established by filtering the phase-shifted outputs in series centrally, in which the internal filters of each DC/DC converter are removed. The three-level voltage is superimposed by phase-shifting the rectified output voltages in series, which is beneficial to decrease the inductor current pulsation, diminish the ripple of output voltage and improve the system efficiency. The centralised filter contributes to downsizing the filter and reducing the system cost. With the introduction of parallel-series structure, the characteristics of low-voltage stress are retained and the power transmission is improved. Meanwhile, the minimum value of total harmonic distortion (THD) with phase-shifted control is obtained through the Fourier decomposition of three-level voltage waveform. By analysing the variation rule of THD with the change of conduction angle, the optimal steady-state operating point of the converter is achieved. The operating principle of the proposed system is presented minutely in this study and a prototype has been established. The experimental results verify the validity of the proposed converter.
机译：为了满足光伏并网系统中高压直流母线的要求，提出了一种具有相移控制的1500 V三电平正激变换器。 1500 V DC总线的体系结构是通过集中对串联的相移输出进行滤波而建立的，其中移除了每个DC / DC转换器的内部滤波器。通过将整流后的输出电压串联相移来叠加三电平电压，这有利于减小电感器电流脉动，减小输出电压的纹波并提高系统效率。集中式过滤器有助于减小过滤器的尺寸并降低系统成本。随着并联结构的引入，保持了低压应力的特性并改善了功率传输。同时，通过三电平电压波形的傅立叶分解，获得了具有相移控制的总谐波失真（THD）的最小值。通过分析THD随导通角变化的变化规律，可获得变换器的最佳稳态工作点。在这项研究中，将详细介绍拟议系统的工作原理，并已建立了原型。实验结果验证了所提出转换器的有效性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号