Journal article Open Access

# Embedding Power Line Communication in Photovoltaic Optimizer by Modulating Data in Power Control Loop

Zhu, Yue; Wu, Jiande; Wang, Ruichi; Lin, Zhengyu; He, Xiangning

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{
"publisher": "Zenodo",
"DOI": "10.5281/zenodo.1287279",
"container_title": "IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS",
"title": "Embedding Power Line Communication in Photovoltaic Optimizer by Modulating Data in Power Control Loop",
"issued": {
"date-parts": [
[
2018,
5,
24
]
]
},
"abstract": "<p>In Photovoltaic (PV) system, dc-dc power op-timizer (DCPO) is an option to maximize output power. At the same time, data links among DCPOs are often required for system monitoring and controlling. This paper pro-poses a novel power line communication (PLC) method for the DCPOs, in which the data of a DCPO is modulated into the control loop of power converter, and then transmitted through the series-connected dc power line to other DCPOs. In the process of communication, differential phase shift keying (DPSK) modulation and discrete Fourier transformation (DFT) demodulation are employed. To ana-lyze the quality of communication, the communication model of the system is built, based on small-signal model. Furthermore, the noises of the system, including switch-ing, maximum power point tracking (MPPT) and additive white Gaussian noise (AWGN), are discussed and meas-ured to evaluate the signal-to-noise ratio (SNR). At last, an experimental system including 6 DCPOs is established and tested, which verifies the feasibility and effectiveness of the proposed method.</p>",
"author": [
{
"family": "Zhu, Yue"
},
{
"family": "Wu, Jiande"
},
{
"family": "Wang, Ruichi"
},
{
"family": "Lin, Zhengyu"
},
{
"family": "He, Xiangning"
}
],
"type": "article-journal",
"id": "1287279"
}
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