Grid Signal Synchronization Method by Using Cascaded Filter Phase-Locked Loop

被引：0
|
作者：
Wang A.-N. [1 ]
Tang A.-B. [1 ]
Liu Y.-N. [1 ]
Song C.-H. [1 ]
机构：
[1] School of Information Science & Engineering, Northeastern University, Shenyang
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2020年 / 41卷 / 04期
关键词：
Cascaded filter; Frequency offset; Phase step; Phase-locked loop; Signal synchronization;
D O I：
10.12068/j.issn.1005-3026.2020.04.001
中图分类号：
学科分类号：
摘要：
In the case of grid fault conditions, the traditional SRF-PLL has large frequency and phase signal detection errors when performing grid signal synchronization, and a grid signal synchronization method based on cascaded filter phase-locked loop was proposed. In QT1-PLL, the cascaded filtering structure was used to improve the filtering performance and the response speed of the system. The effect of grid frequency offset on phase-locked results can be eliminated by adding phase and amplitude compensation links in the phase-locked loop. Simulation and experimental results showed that accurate frequency and phase detection can be achieved in 1.5 grid periods when the voltage signal has a 20° phase step and 4 Hz frequency step. When the frequency and phase overshoot are 0.5 Hz and 4°, respectively, it can meet the fast and accurate requirements of the grid-connected system, and verify the correctness and effectiveness of the proposed theory. © 2020, Editorial Department of Journal of Northeastern University. All right reserved.
引用
收藏
页码：457 / 463
页数：6
相关论文
共 15 条
  • [1] Li Z.-L., Fu C., Wang J.-J., Et al., A fast phase-locked loop for phase and frequency detection decoupling, Automation of Electric Power Systems, 43, 5, pp. 143-154, (2019)
  • [2] Du X., Liu Y.-D., Wang G.-N., Et al., Synchronous signal detection method for single synchronous reference coordinate system using sinusoidal amplitude integrator, Transactions of China Electrotechnical Society, 30, 8, pp. 167-175, (2015)
  • [3] Kaura V., Blasko V., Operation of a phase locked loop system under distorted utility conditions, IEEE Transactions on Industry Applications, 33, 1, pp. 58-63, (1997)
  • [4] Wang J.-H., Pan H., Na C.-N., Design of a novel grid-connected phase-locked loop under voltage unbalance and harmonic distortion, Power System Protection and Control, 47, 15, pp. 108-115, (2019)
  • [5] Golestan S., Guerrero J.M., Conventional synchronous reference frame phase-locked loop is an adaptive complex filter, IEEE Transactions on Industrial Electronics, 62, 3, pp. 1679-1682, (2015)
  • [6] Zeng Z., Yang J.-Q., A grid synchronization method for frequency adaptive moving average filter, Journal of Zhejiang University(Engineering), 48, 9, pp. 1696-1703, (2014)
  • [7] Gude S., Chu C.C., Three-phase PLLs by using frequency adaptive multiple delayed signal cancellation pre-filters under adverse grid conditions, IEEE Transactions on Industry Applications, 54, 4, pp. 3832-3844, (2018)
  • [8] Xie M.X., Yang Y., Wen H.Q., Et al., A method to improve the transient response of dq-frame cascaded delayed-signal-cancellation PLL, Electric Power Systems Research, 155, 2, pp. 121-130, (2018)
  • [9] Wang G.-N., Sun P.-J., Du X., Et al., Dynamic performance of frequency-locked loop synchronization signal detection method under grid voltage asymmetry, Transactions of China Electrotechnical Society, 30, 22, pp. 163-171, (2015)
  • [10] Kulkarni A., John V., Design of a fast response time single-phase PLL with dc offset rejection capability, Electric Power Systems Research, 145, pp. 35-43, (2017)
12