...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Power Electronics, IET >Analytical circuit oriented modelling and performance assessment of modular multilevel converter
【24h】

Analytical circuit oriented modelling and performance assessment of modular multilevel converter

机译：模块化多电平转换器的面向分析电路的建模和性能评估

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

This study presents a detailed time domain model of a modular multilevel converter (MMC) to provide an alternative form of evaluation of the converter dynamic performance, for example, during AC or DC fault conditions. The purpose of the model is to accurately reflect the converter behaviour to be used in control systems design. It can also be beneficial to predict the steady state or transient state of the converter with fixed or variable inputs. In an MMC, the capacitor voltages are modulated using pulse-width modulation (PWM) to fabricate a sinusoidal output voltage. With time, and because of the PWM action, the capacitors get charged or discharged. Therefore the circuit behaves as a time-variant circuit. The analysis is based on the equivalent circuit derived from the converter differential expressions at any time instant in a piecewise fashion. The usefulness and accuracy of the theoretical study is validated for the three-phase MMC topology by simulation results with respect to normal operation, start-up process, cell short-circuit fault, line-to-ground and DC-side fault conditions. Experimental tests are carried out through a scaled-down laboratory prototype.
机译：这项研究提出了模块化多电平转换器（MMC）的详细时域模型，以提供一种替代形式的转换器动态性能评估，例如在AC或DC故障情况下。该模型的目的是准确反映要在控制系统设计中使用的转换器性能。预测具有固定或可变输入的转换器的稳态或瞬态也可能是有益的。在MMC中，使用脉宽调制（PWM）来调制电容器电压，以制造正弦输出电压。随着时间的流逝，由于PWM的作用，电容器被充电或放电。因此，该电路表现为时变电路。该分析基于在任何时刻以分段方式从转换器差分表达式得出的等效电路。通过针对正常运行，启动过程，电池短路故障，线对地和直流侧故障情况的仿真结果，验证了理论研究的有效性和准确性对于三相MMC拓扑结构。通过缩小的实验室原型进行实验测试。

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