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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