Abstract
Estimation of amplitude, instantaneous phase, and frequency of a single-phase grid voltage signal are studied in this letter. The proposed approach uses a novel circular limit cycle oscillator (CLO) coupled with a frequency-locked loop. Due to the nonlinear structure of the CLO, the proposed frequency adaptive CLO technique is robust against various perturbations faced in the practical settings, e.g., the discontinuous jump of phase, frequency, and amplitude. The global stability analysis of the CLO and local stability analysis of the frequency adaptive CLO are performed. Experimental results demonstrate the effectiveness of the proposed technique over a very recent technique proposed in the literature.
| Original language | English |
|---|---|
| Article number | 8485651 |
| Pages (from-to) | 8856 - 8859 |
| Number of pages | 4 |
| Journal | IEEE Transactions on Industrial Electronics |
| Volume | 66 |
| Issue number | 11 |
| Early online date | 8 Oct 2018 |
| DOIs | |
| Publication status | Published - Nov 2019 |
Bibliographical note
© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.Keywords
- Frequency estimation
- frequency-locked loop
- phase estimation
ASJC Scopus subject areas
- Control and Systems Engineering
- Electrical and Electronic Engineering