基于同步采样SDFT的高性能单相锁相环方法研究  

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

作　　者：陈志博 李学明 甘韦韦 高剑[2] 黄守道[2] CHEN Zhibo;LI Xueming;GAN Weiwei;GAO Jian;HUANG Shoudao(Zhuzhou CRRC Times Electric Co.,Ltd.,Zhuzhou,Hunan 412001,China;College of Electrical and Information Engineering,Hunan University,Changsha,Hunan 410082,China)

机构地区：[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

出　　处：《机车电传动》2024年第2期81-91,共11页Electric Drive for Locomotives

基　　金：中国中车科技研究开发计划项目(2022CYA050)。

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。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 

分 类 号：U264.37[机械工程—车辆工程]