Low-Frequency Oscillation Analysis and Suppression Based on Improved PLL Structure for Vehicle-Grid System of High-speed Railways
编号:146 访问权限:仅限参会人 更新:2021-12-10 20:16:19 浏览:541次 口头报告

报告开始:2021年12月17日 11:00(Asia/Shanghai)

报告时间:15min

所在会场:[B] Power electronic technology and application [B6] Session 32

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摘要
Recently, the low-frequency oscillation (LFO) has occurred frequently in vehicle-grid system of high-speed railways. In this paper, the phase-locked loop (PLL) structure is enhanced to restrain the LFO of the vehicle-grid system, and the impedance mathematical model of the vehicle-grid system based on the improved PLL is bulit. Furthermore, the effectiveness of the improved PLL in suppressing the LFO is verified based on the generalized Nyquist stability criterion and the Starsim-based hardware-in-loop (HIL) platform. In addition, an improved impedance measurement method for single-phase systems is proposed to verify the effectiveness of the impedance mathematical model of rectifier after the improvement of PLL. Compared with the previous dq impedance measuring method, the proposed method can effectively reduce the times of disturbance injection, simplifying the measurement procedure.
 
关键词
train-network systems, PLL, impedance measurement, low-frequency oscillation stability
报告人
炜璐 张
student Southwest Jiaotong University

稿件作者
炜璐 张 Southwest Jiaotong University
祥宇 孟 Southwest Jiaotong University
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重要日期
  • 会议日期

    07月11日

    2023

    08月18日

    2023

  • 11月10日 2021

    初稿截稿日期

  • 12月10日 2021

    注册截止日期

  • 12月11日 2021

    报告提交截止日期

主办单位
IEEE IAS
承办单位
IEEE IAS Student Chapter of Southwest Jiaotong University (SWJTU)
IEEE IAS Student Chapter of Huazhong University of Science and Technology (HUST)
IEEE PELS (Power Electronics Society) Student Chapter of HUST
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