A study on high-performance single-phase phase-locked loop method based on synchronous sampling SDFT

CHEN Zhibo; LI Xueming; GAN Weiwei; GAO Jian; HUANG Shoudao

doi:10.13890/j.issn.1000-128X.2024.02.010

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A study on high-performance single-phase phase-locked loop method based on synchronous sampling SDFT

Converting and Control | 更新时间：2024-08-02

- A study on high-performance single-phase phase-locked loop method based on synchronous sampling SDFT
- Electric Drive for Locomotives Issue 2, Pages: 81-91(2024)
- 作者机构：
  
  1.株洲中车时代电气股份有限公司，湖南株洲 412001
  2.湖南大学电气与信息工程学院，湖南长沙 410082
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128X.2024.02.010
  CLC： U264.3⁺7
- Published：10 March 2024，
  
  Received：18 December 2022，
- 稿件说明：
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陈志博, 李学明, 甘韦韦, 等. 基于同步采样SDFT的高性能单相锁相环方法研究[J]. 机车电传动, 2024(2): 81-91.

CHEN Zhibo, LI Xueming, GAN Weiwei, et al. A study on high-performance single-phase phase-locked loop method based on synchronous sampling SDFT[J]. Electric drive for locomotives,2024(2): 81-91.
陈志博, 李学明, 甘韦韦, 等. 基于同步采样SDFT的高性能单相锁相环方法研究[J]. 机车电传动, 2024(2): 81-91. DOI：10.13890/j.issn.1000-128X.2024.02.010.

CHEN Zhibo, LI Xueming, GAN Weiwei, et al. A study on high-performance single-phase phase-locked loop method based on synchronous sampling SDFT[J]. Electric drive for locomotives,2024(2): 81-91. DOI：10.13890/j.issn.1000-128X.2024.02.010.

摘要

在电力机车及动车组的牵引传动控制系统中，网侧变流器通过锁相环获取相位信息并进行精确控制。牵引供电网电压的幅值及频率存在波动，而且网压经常出现严重畸变及含有大量谐波，复杂的电网环境对锁相环性能提出了很高的要求。文章结合同步采样，提出一种基于SDFT的高性能锁相环方法，并通过数字仿真及半实物仿真对所述方法的性能进行了验证。仿真结果表明，与其他几种主流的锁相环对比，该方法稳态锁相精度高，动态响应速度快，并有较强的谐波抑制能力与抗偏置能力，适宜在轨道交通领域应用。

Abstract

In the traction drive control system of electric locomotives and rolling stock

the grid-side converter obtains phase information through a phase-locked loop and carries out precise control. The voltage amplitude and frequency of the traction power supply network fluctuate

and the network voltage often has serious distortion and contains a large number of harmonics

so the complex grid environment puts forward high requirements for the performance of phase-locked loops. In combination with synchronous sampling

this paper proposes a high-performance phase-locked loop method based on SDFT. The performance of this method was verified through digital simulation and semi-physical simulation tests. The test results show that

compared with several other mainstream phase-locked loop methods

this method has high steady-state phase-locking accuracy

fast dynamic response speed

and strong harmonic suppression and anti-bias capability

and is suitable for application in the field of rail transit.

关键词

四象限变流器同步采样SDFT锁相环谐波抑制抗扰性

Keywords

four-quadrant convertersynchronous samplingSDFTphase-locked loopharmonic suppressiondisturbance immunity

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