Thermal Performance Evaluation of 1500-VDC Photovoltaic Inverters Under Constant Power Generation Operation

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Abstract

The technology shift from 1000-V to 1500-V DC voltage can reduce the installation cost of Photovoltaic (PV) systems to a large extent. However, the increased DC-link voltage also imposes a challenge to PV inverters, and thus, it requires careful consideration in the design phase and the control in operation. In this context, this paper evaluates the thermal performance of two-level and three-level 1500-VDC single-stage PV inverters under constant power generation (CPG) operation. A 160-kW PV system and its operating conditions have been defined for comparison. Three IGBT modules from a leading manufacturer have been selected for different inverter topologies. The thermal performance evaluation of the 1500-VDC PV inverters under CPG operation conditions has been carried out through PLECS modeling. This evaluation can be used for topology and component selection of 1500-VDC PV inverters and improving their operation with better thermal performance.
Original languageEnglish
Title of host publicationProceedings of 2019 IEEE Conference on Power Electronics and Renewable Energy (CPERE)
Number of pages5
Place of PublicationAswan City, Egypt
PublisherIEEE Press
Publication dateOct 2019
DOIs
Publication statusPublished - Oct 2019
Event2019 IEEE Conference on Power Electronics and Renewable Energy (CPERE) - Aswan City, Egypt
Duration: 23 Oct 201925 Oct 2019

Conference

Conference2019 IEEE Conference on Power Electronics and Renewable Energy (CPERE)
CountryEgypt
City Aswan City
Period23/10/201925/10/2019

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Keywords

  • Photovoltaic (PV) inverters
  • Multi-level inverters
  • Constant power generation (CPG)
  • Power Loss
  • Thermal stress
  • Reliability
  • Efficiency

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