...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Power Electronics, IET >Switching frequency variation based on current ripple analysis of a 3-L PMSM drive system considering neutral point balance
【24h】

Switching frequency variation based on current ripple analysis of a 3-L PMSM drive system considering neutral point balance

机译：考虑中性点平衡的3-L PMSM驱动系统电流纹波分析开关频率变化

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 output current ripple of the three-level (3-L) inverter is important to the performance of the 3-L permanent magnetic synchronous motor (PMSM) drive system, but the neutral point (NP) balance for the 3-L T-type inverter is not considered in the analysis of current ripple up to this point. The NP balance algorithms change the current ripple distribution and it is necessary to develop novel methods for current ripple analysis. In this study, the sinusoidal pulse width modulation with zero-order voltage injection and virtual space vector PWM (VSV-PWM) are utilised to balance the NP potential of the 3-L inverter in the PMSM drive system. The analytical methods of current ripple under these two modulation methods are proposed and the effects of these two NP balance methods on the output current ripple are investigated, respectively. Based on the analysis of current ripple, two variable switching frequency PWM (VSF-PWM) methods considering the NP balance are proposed. The proposed VSF-PWM methods can not only reduce the switching loss but also suppress the electro-magnetic interference noise while keeping the NP potential balanced. Especially, the proposed variable switching frequency VSV-PWM (VSF-VSV-PWM) can effectively alleviate the intrinsic problem of high switching loss of VSV-PWM.
机译：三级（3-L）逆变器的输出电流纹波对于3-L永磁同步电动机（PMSM）驱动系统的性能非常重要，但3-L T-的中性点（NP）平衡在此时，不考虑型变频器在达到目前的纹波中不考虑。 NP平衡算法改变了电流纹波分布，有必要开发用于当前纹波分析的新方法。在本研究中，利用具有零级电压注入和虚拟空间矢量PWM（VSV-PWM）的正弦脉冲宽度调制来平衡PMSM驱动系统中的3-L逆变器的NP电位。提出了这两个调制方法下电流纹波的分析方法，并分别研究了这两个NP平衡方法对输出电流纹波的影响。基于对电流纹波的分析，提出了考虑NP平衡的两个可变开关频率PWM（VSF-PWM）方法。所提出的VSF-PWM方法不仅可以降低开关损耗，还可以在保持NP电位平衡的同时抑制电磁干扰噪声。特别是，所提出的可变开关频率VSV-PWM（VSF-VSV-PWM）可以有效地缓解VSV-PWM高开关损耗的内在问题。

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