최적 일체형 태양광 발전용 전력변환장치PCS 특성에 관한 연구
A Study on the Characteristics of PCS Using a Solar Cells Generation of Optimal Integrated
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초록
본 논문에서는 PV 시스템에서 사용되는 회로들을 쉽게 해석할 수 있도록 모델링하였다. 시뮬레이션 툴은 직관적인 전기회로 시뮬레이션이 가능한 PSPICE를 이용하였다. 모델링한 라이브러리를 이용하여 태양전지의 사용에서 간과하기 쉬운 온도와 공간방사의 영향에 대해서도 시뮬레이션을 수행하였다. 이와 더불어 태양광 발전 시스템의 완전한 동작을 위해 DC-DC벅-부스트 컨버터와 MPPT 제어 시스템에 대한 완전한 동작 시스템에 대해 모델링하고 시뮬레이션을 수행하여 양호한 동작을 확인할 수 있었다. 또한 시뮬레이션의 동작을 입증하기 위하여 시뮬레이션에서와 동일한 조건의 실제 시스템을 구성하여실험을 수행 하였으며 실험의 결과와 시뮬레이션의 결과가 동일한 동작을 수행하는 것을 확인할 수 있었다. 또한, 단상3[kW] 계통연계형 태양광 전력변환기를 제안하였다.
Abstract
In this paper, we modeled the devices used easily in PV system circuits . Simulation tools use PSPICE to enableintuitive electrical circuit simulations. Simulations were also performed on the effects of temperature and spatialradiation that are easy to overlook when using solar cells using modelled libraries. In addition, for full operation of thephotovoltaic system, a complete operation system for the DC-DC buck-boost converter and the MPPT(MaximumPower Point Tracking) control system was modeled and simulated to confirm good operation. In order to verify theoperation of the simulation, we constructed an actual system with the same conditions in the simulation andexperimented. As a result, we proposed a single-phase 3 kW grid-connected solar power converter.
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