...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Power Electronics, IET >Adaptive loss and capacitance-reduction control strategy based on second-harmonic circulating current injection for MMC
【24h】

Adaptive loss and capacitance-reduction control strategy based on second-harmonic circulating current injection for MMC

机译：基于二次谐波循环电流注入的MMC自适应损耗减小电容控制策略

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

The submodule (SM) capacitance value of a modular multilevel converter (MMC) is so large that the reliability and cost of the MMC are affected. By existing methods of second-harmonic circulating current injection with a closed-loop control strategy, the SM capacitance value can be greatly reduced. However, the design of the SM capacitance value is not given, and extra loss is brought in. This study gives the design of the SM capacitance value when the second-harmonic circulating current is injected with a closed-loop control strategy. Then, an adaptive control method based on SM capacitor voltage fluctuation feedback is proposed to reduce the extra loss caused by the second-harmonic circulating current injection. In addition, for the case without SM capacitor voltage sensors, a method based on real-time calculation of the injected second-harmonic circulating current is proposed to reduce the extra loss without SM capacitor voltage sensors. Finally, the accuracy of the design and the validity of the proposed methods are verified by simulation and experimental results.
机译：模块化多电平转换器（MMC）的子模块（SM）电容值太大，以至于MMC的可靠性和成本都会受到影响。通过具有闭环控制策略的现有的二次谐波循环电流注入方法，SM电容值可以大大降低。然而，没有给出SM电容值的设计，并且会带来额外的损耗。本研究给出了在采用闭环控制策略注入二次谐波循环电流时的SM电容值的设计。然后，提出了一种基于SM电容器电压波动反馈的自适应控制方法，以减少二次谐波循环电流注入引起的额外损耗。另外，针对没有SM电容电压传感器的情况，提出了一种基于实时计算注入的二次谐波循环电流的方法，以减少没有SM电容电压传感器的额外损耗。最后，通过仿真和实验结果验证了设计的准确性和所提方法的有效性。

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