Current Photovoltaic Research

Korea Photovoltaic Society (한국태양광발전학회)
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Characteristics Analysis of Proto-type Microconverter for Power Output Compensation of Photovoltaic Modules

태양광 모듈 출력 보상을 위한 마이크로컨버터 시제품 동작 특성 분석

  • 김지현 (태양에너지연구실, 녹색에너지연구원) ;
  • 김주희 (태양에너지연구실, 녹색에너지연구원) ;
  • 이정준 ((주)더블유피) ;
  • 박종성 (에너지공학과, 경상국립대학교) ;
  • 김창헌 (태양에너지연구실, 녹색에너지연구원)
  • Received : 2022.12.07
  • Accepted : 2022.12.19
  • Published : 2022.12.31
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Abstract

The economic feasibility of a photovoltaic (PV) system is greatly influenced by the initial investment cost for system installation. Also, electricity generation by PV system is highly important. The profits competitiveness of PV system will be maximized through intelligent operation and maintenance (O&M). Here, we developed a microconverter which can maximize electricity generation from PV modules by tracking the maximum power point of PV modules, and help efficient O&M. Also, the microconverter mitigates current mismatch caused by shading, hence maximize power generation. The microconverters were installed PV modules and demonstrated through the field tests. Power outputs such as voltage, string current were measured with variuos weather environments and partial shadings. We found that PV modules with the microconvertors shows 12.05% higher power generation compared to the reference PV modules.

Keywords

Acknowledgement

본 연구는 산업통상자원부(MOTIE)와 한국에너지기술평가원(KETEP)의 지원을 받아 수행되었습니다(과제번호: 20203040010130 & 20215710100310).

References

  1. Ministry of Trade, Industry and Energy, "Renewable energy industry competitiveness enhancement plan," Policy briefing of Republic of Korea (2019).
  2. S. Carpenter and N. Meloche, The RETScreen model for simulating the performance of solar air heating (2002).
  3. S. Chan and G. Oh, "An intelligent maintenance (O&M) decision-making platform based on physics of failure (PoF) for reducing the LCOE of solar power plants," The Korean Society of Mechanical Engineers(2021) 44 - 44 systems. Canada: Np., 2002. Web.
  4. J. Min, "Technical trends of PV microconverters," Bulletin of the Korea Photovoltaic Society, 4(2), 25-32 (2018).
  5. H. T. Choe, "Module Integrated converters and PV systems " Bulletin of the Korea Photovoltaic Society, 5(1), 16-23 (2019).
  6. J. Itoh and T. Fujii, "A new approach for high efficiency Buck-Boost DC/DC converters using series compensation," IEEE Annual Power Electronics Specialists Conference, 130(1), 2109-2114 (2008).
  7. J. Min and W. Choi, "Analysis of power generation characteristics of according of the MPPT algorithm period," The Korean Institute of Electrical Engineers, 67(4), 233-237 (2018).
  8. Y. Choi, et. al., "MPPT control method of solar power generation system," The journal of the Korean Institute of Power Electronics, 18(1), 29-36 (2013).
  9. L. Diana, et al., "Dual-boost inverter for PV microinverter application-an assessment of control strategies," Applied Science, 12, 5952 (2022).