Embedding Power Line Communication.pdf (1.38 MB)
Download file

Embedding power line communication in photovoltaic optimizer by modulating data in power control loop

Download (1.38 MB)
journal contribution
posted on 27.06.2019, 10:09 authored by Yue Zhu, Jiande Wu, Ruichi Wang, Zhengyu LinZhengyu Lin, Xiangning He
In a photovoltaic system, a dc-dc power optimizer (DCPO) is an option to maximize the output power. At the same time, data links among DCPOs are often required for system monitoring and controlling. This paper proposes a novel power line communication method for the DCPOs, in which the data of a DCPO are modulated into the control loop of a power converter, and then transmitted through the series-connected dc power line to other DCPOs. In the process of communication, differential phase-shift keying modulation and discrete Fourier transformation demodulation are employed. To analyze the quality of communication, the communication model of the system is built, based on a small-signal model. Furthermore, the noises of the system, including switching, maximum power point tracking, and additive white Gaussian noise, are discussed and measured to evaluate the signal-to-noise ratio. Lastly, an experimental system including six DCPOs is established and tested, which verifies the feasibility and effectiveness of the proposed method.

Funding

National Nature Science Foundation of China under Grant 51577170, in part by the National Key Technologies R&D Program of China under Grant 2017YFE0112400, and in part by the European Union’s Horizon 2020 research and innovation programme under Grant 734796.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

IEEE Transactions on Industrial Electronics

Volume

66

Issue

5

Pages

3948 - 3958

Citation

ZHU, Y. ... et al., 2019. Embedding power line communication in photovoltaic optimizer by modulating data in power control loop. IEEE Transactions on Industrial Electronics, 66 (5), pp. 3948 - 3958.

Publisher

© IEEE

Version

AM (Accepted Manuscript)

Acceptance date

03/05/2018

Publication date

2018-05-24

Notes

© 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.

ISSN

0278-0046

Language

en

Usage metrics

Keywords

Exports