A study on high-performance single-phase phase-locked loop method based on synchronous sampling SDFT
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 o...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Electric Drive for Locomotives
2024-03-01
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| Series: | 机车电传动 |
| Subjects: | |
| Online Access: | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128X.2024.02.010 |
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| Summary: | 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. |
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| ISSN: | 1000-128X |