PVPCS DC/DC 컨버터 모델링 및 2중 루프 제어와 단일 루프 제어의 특성 비교
Comparative Study between Two-loop and Single-loop Control of DC/DC Converter for PVPCS
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In photovoltaic system, the characteristics of photovoltaic module such as open circuit voltage and short circuit current will be changed because of cell temperature and solar radiation. Therefore, the boost converter of a PV system connects between the output of photovoltaic system and DC link capacitor of grid connected inverter as controlling duty ratio for maximum power point tracking(MPPT). This paper shows the dynamic characteristics of the boost converter by comparing single-loop and two-loop control algorithm using both analog and digital control. Both proposed compensation methods have been verified with computer simulation to demonstrate the validity of the proposed control schemes.
Abstract
In photovoltaic system, the characteristics of photovoltaic module such as open circuit voltage and short circuit current will be changed because of cell temperature and solar radiation. Therefore, the boost converter of a PV system connects between the output of photovoltaic system and DC link capacitor of grid connected inverter as controlling duty ratio for maximum power point tracking(MPPT). This paper shows the dynamic characteristics of the boost converter by comparing single-loop and two-loop control algorithm using both analog and digital control. Both proposed compensation methods have been verified with computer simulation to demonstrate the validity of the proposed control schemes.
참고문헌 (9)
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- Dong-Hwan Kim, "Comparative Study between Two and Single-loop Control of Boost Converter for PVPCS", The Korean Solar Energy Society Spring Annual Conference, 32(.1) (2012)