부스트 컨버터의 모델링과 단일 루프 & 이중 루프 제어기의 성능 비교
Modeling of Boost Converter and Performance Comparison of Single-loop & Dual-loop Controller
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초록
To maximize the amount of power generated in a photovoltaic inverter, MPPT (Maximum Power Point Tracking) is an essential function of a photovoltaic (PV) inverter. A PV inverter generally consists of a DC/DC converter (boost converter) and a DC/AC inverter. For stable MPPT control, the controller of the boost converter must be properly designed. In this study, the nonlinear characteristics of solar cells were linearized and modeled for a proper controller design, and an analog controller was designed using MATLAB and converted into a digital controller. The controller was simulated using a designed controller based on PSIM, and the performances of a single-loop controller and dual-loop controller were compared. In addition, the performance of the controller was verified and compared experimentally by applying the designed controller to a commercial PV inverter.
Abstract
To maximize the amount of power generated in a photovoltaic inverter, MPPT (Maximum Power Point Tracking) is an essential function of a photovoltaic (PV) inverter. A PV inverter generally consists of a DC/DC converter (boost converter) and a DC/AC inverter. For stable MPPT control, the controller of the boost converter must be properly designed. In this study, the nonlinear characteristics of solar cells were linearized and modeled for a proper controller design, and an analog controller was designed using MATLAB and converted into a digital controller. The controller was simulated using a designed controller based on PSIM, and the performances of a single-loop controller and dual-loop controller were compared. In addition, the performance of the controller was verified and compared experimentally by applying the designed controller to a commercial PV inverter.
참고문헌 (5)
- 김수빈, "태양광 발전시스템의 새로운 하이브리드 MPPT", 한국태양에너지학회 논문집, 35(2), pp.43~52 (2015), 한국태양에너지학회
- 김동환, "PVPCS DC", DC 컨버터 모델링 및 2중 루프 제어와 단일 루프 제어의 특성 비교, 2012, pp.32(3), 245~254[DOI]
- 임지훈, "태양광용 부스트 컨버터의 디지털 제어기 설계", 한국태양에너지학회 논문집, 30(6), pp.22~27 (2010), 한국태양에너지학회
- 박봉희, "태양광 발전 시스템에서의 벅 컨버터 제어기 설계", 한국태양에너지학회 논문집, 34(2), pp.1~7 (2014), 한국태양에너지학회
- 허철영, "부분 음영에서의 태양광 발전 효율을 높이기 위한 MPPT 전략", 한국태양에너지학회 논문집, 39(2), pp.1~9 (2019), 한국태양에너지학회[DOI]