Development of Flexible Active Power Control Strategies for Grid-Connected Photovoltaic Inverters by Modifying MPPT Algorithms

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Abstract

As the penetration level of grid-connected PV systems increases, more advanced control functionality is demanded. In order to ensure smooth and friendly grid integration as well as enable more PV installations, the power generated by PV systems needs to be flexible and capable of: 1) limiting the maximum feed-in power, 2) ensuring a smooth change rate, and 3) providing a power reserve. Besides, such flexible power control functionalities have to be achieved in a cost-effective way in order to ensure the competitiveness of solar energy. Therefore, this paper explores flexible active power control strategies for grid-connected PV inverters by modifying maximum power point tracking algorithms, where the PV power is regulated by changing the operating point of the PV system. In this way, no extra equipment is needed, being a cost-effective solution. Experiments on a 3-kW grid-connected PV system have been performed, where the developed flexible active power control functionalities are achieved per demands.
Original languageEnglish
Title of host publicationProceedings of the 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia)
Number of pages6
PublisherIEEE Press
Publication dateJun 2017
Pages87-92
ISBN (Print)978-1-5090-5157-1
DOIs
Publication statusPublished - Jun 2017
Event2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia) - Kaohsiung, Taiwan, Province of China
Duration: 3 Jun 20177 Jun 2017

Conference

Conference2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia)
CountryTaiwan, Province of China
CityKaohsiung
Period03/06/201707/06/2017

Keywords

  • Active power control
  • Power limiting control
  • Power ramp rate control
  • Power reserve control
  • Maximum power point tracking
  • Power curtailment
  • PV systems

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    Sangwongwanich, A., Yang, Y., & Blaabjerg, F. (2017). Development of Flexible Active Power Control Strategies for Grid-Connected Photovoltaic Inverters by Modifying MPPT Algorithms. In Proceedings of the 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia) (pp. 87-92). IEEE Press. https://doi.org/10.1109/IFEEC.2017.7992423