...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Industrial Electronics >Multivariable High-Frequency Input-Admittance of Grid-Connected Converters: Modeling, Validation, and Implications on Stability
【24h】

Multivariable High-Frequency Input-Admittance of Grid-Connected Converters: Modeling, Validation, and Implications on Stability

机译：网格连接转换器的多变量高频输入 - 进入：建模，验证和对稳定性的影响

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

Modern grids are facing a massive integration of power electronics devices, usually associated to instability issues. In order to assess the likelihood and severity of harmonic instability in the high-frequency region, this paper develops a multivariable input-admittance model that accurately reflects the following aspects: 1) the discrete controller frequencies are defined inside a spectrum region limited by the Nyquist frequency and 2) the physical system aliases are transformed into lower frequency component inside the discrete controller. The proposed model shows that dynamic interactions are not theoretically band-limited; however, the control action tends to be strongly limited in a low-frequency range, due to the natural low-pass filter behavior of acquisition and modulation blocks. This is reflected in a reduced resistive part (either positive or negative) of the input-admittance in the high-frequency range. More specifically, considering the input-admittance passivity criterion, the excursions into the nonpassive area are very smooth at high frequencies, where the input-admittance is well-described by simply its inductive filter. Comprehensive experiments are conducted on a lab scale prototype, which includes measurements beyond the Nyquist frequency and alias identification. The experimental results well-match the theoretical model.
机译：现代网格正面临电力电子设备的大规模集成，通常与不稳定问题相关联。为了评估高频区域中谐波不稳定性的可能性和严重程度，本文开发了一种多变量的输入进入模型，可准确反映以下几个方面：1）在由奈奎斯特限制的频谱区域内定义离散控制器频率频率和2）物理系统别名被转换为离散控制器内的较低频率分量。所提出的模型表明，动态相互作用不是理论上的带限制;然而，由于采集和调制块的自然低通滤波器行为，控制作用趋于强烈限制在低频范围内。这反映在高频范围内输入导纳的降低的电阻部分（正面或阴性）。更具体地，考虑到输入进入的被引入的被动标准，在高频下，进入非基位区域的偏移非常平滑，其中通过简单的电感滤波器良好地描述输入导纳。在实验室规模原型上进行综合实验，包括超出奈奎斯特频率和别名识别的测量。实验结果良好匹配理论模型。

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