Dithering Digital Ripple Correlation Control for Photovoltaic Maximum Power Point Tracking

Barth, C; Pilawa-Podgurski, RCN

doi:10.1109/TPEL.2014.2357796

Title: Dithering Digital Ripple Correlation Control for Photovoltaic Maximum Power Point Tracking

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Abstract

This study demonstrates a new method for rapid and precise maximum power point tracking in photovoltaic (PV) applications using dithered PWM control. Constraints imposed by efficiency, cost, and component size limit the available PWM resolution of a power converter, and may in turn limit the MPP tracking efficiency of the PV system. In these scenarios, PWM dithering can be used to improve average PWM resolution. In this study, we present a control technique that uses ripple correlation control (RCC) on the dithering ripple, thereby achieving simultaneous fast tracking speed and high tracking accuracy. Moreover, the proposed method solves some of the practical challenges that have to date limited the effectiveness of RCC in solar PV applications. We present a theoretical derivation of the principles behind dithering digital ripple correlation control, as well as experimental results that show excellent tracking speed and accuracy with basic hardware requirements.

Authors:: Barth, C; Pilawa-Podgurski, RCN

Publication Date:: Sat Aug 01 00:00:00 EDT 2015

Sponsoring Org.:: USDOE Advanced Research Projects Agency - Energy (ARPA-E)

OSTI Identifier:: 1211440

DOE Contract Number:: DE-AR0000217

Resource Type:: Journal Article

Journal Name:: IEEE Transactions on Power Electronics

Additional Journal Information:: Journal Volume: 30; Journal Issue: 8; Journal ID: ISSN 0885-8993

Country of Publication:: United States

Language:: English

Citation Formats


                    Barth, C, and Pilawa-Podgurski, RCN. Dithering Digital Ripple Correlation Control for Photovoltaic Maximum Power Point Tracking.  United States: N. p., 2015. 
        Web.  doi:10.1109/TPEL.2014.2357796.

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                    Barth, C, & Pilawa-Podgurski, RCN. Dithering Digital Ripple Correlation Control for Photovoltaic Maximum Power Point Tracking.  United States.  https://doi.org/10.1109/TPEL.2014.2357796

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                    Barth, C, and Pilawa-Podgurski, RCN. 2015.  
        "Dithering Digital Ripple Correlation Control for Photovoltaic Maximum Power Point Tracking".  United States.  https://doi.org/10.1109/TPEL.2014.2357796.

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@article{osti_1211440,

  title        = {Dithering Digital Ripple Correlation Control for Photovoltaic Maximum Power Point Tracking},

  author       = {Barth, C and Pilawa-Podgurski, RCN},

  abstractNote = {This study demonstrates a new method for rapid and precise maximum power point tracking in photovoltaic (PV) applications using dithered PWM control. Constraints imposed by efficiency, cost, and component size limit the available PWM resolution of a power converter, and may in turn limit the MPP tracking efficiency of the PV system. In these scenarios, PWM dithering can be used to improve average PWM resolution. In this study, we present a control technique that uses ripple correlation control (RCC) on the dithering ripple, thereby achieving simultaneous fast tracking speed and high tracking accuracy. Moreover, the proposed method solves some of the practical challenges that have to date limited the effectiveness of RCC in solar PV applications. We present a theoretical derivation of the principles behind dithering digital ripple correlation control, as well as experimental results that show excellent tracking speed and accuracy with basic hardware requirements.},

  doi          = {10.1109/TPEL.2014.2357796},

  url          = {https://www.osti.gov/biblio/1211440},
  journal      = {IEEE Transactions on Power Electronics},

  issn         = {0885-8993},

  number       = 8,

  volume       = 30,

  place        = {United States},

  year         = {Sat Aug 01 00:00:00 EDT 2015},

  month        = {Sat Aug 01 00:00:00 EDT 2015}

}

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