首页> 外文会议>IEEE Energy Conversion Congress and Exposition >Grounding concept and common-mode filter design methodology for transformerless MV drives
【24h】

Grounding concept and common-mode filter design methodology for transformerless MV drives

机译:无变压器中压变频器的接地概念和共模滤波器设计方法

获取原文

摘要

Recently, the transformerless design of medium-voltage (MV) drives is an emerging design concept of variable-speed drives (VSD). Here, no dedicated feed transformer is used. The VSD is directly connected to the on-site facility transformer, where multiple other loads are connected as well. The benefits of such a transformerless VSD are the reduced total volume, weight, losses and system costs. In this publication, a suitable grounding concept and a generalized CM filter design methodology for transformerless MV drives is presented for the first time. Both the CM voltage injection to the grid and the CM voltage applied to the three machine terminals is considered. At the Point-of-Common-Coupling (PCC), the CM part of the grid harmonic standards can be met through a proper filter design. Since the converter-generated CM voltage could also cause issues on the machine-side, a novel design reference for the mitigation of bearing currents is applied. The introduced CM filter design methodology provides a suitable CM filter design for transformerless high-power medium-voltage converters. By this, the reliable transformerless operation of general purpose drives and retrofit applications is feasible.
机译:最近,中压(MV)驱动器的无变压器设计是变速驱动器(VSD)的新兴设计概念。在此,不使用专用的馈电变压器。 VSD直接连接到现场设施变压器,还连接了多个其他负载。这种无变压器的VSD的好处是减少了总体积,重量,损耗和系统成本。在该出版物中,首次提出了适用于无变压器中压变频器的合适的接地概念和通用的CM滤波器设计方法。同时考虑了向电网注入的CM电压和施加至三个机器端子的CM电压。在公共点耦合(PCC),可以通过适当的滤波器设计来满足电网谐波标准的CM部分。由于转换器产生的CM电压也可能导致机器方面的问题,因此采用了减轻轴承电流的新颖设计参考。引入的CM滤波器设计方法为无变压器大功率中压转换器提供了合适的CM滤波器设计。这样,通用驱动器和翻新应用程序的可靠无变压器运行是可行的。

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