A study on simulator or solar generation and MPPT to
improve generation efficiency
태양광 발전시스템 모의를 위한 장치 및
발전 효율을 높일 수 있는 MPPT 연구
Abstract
Photovoltaic Generation Simulators and MPPT Strategy to Improve
Photovoltaic Power Generation Efficiency in Partial Shadows
In this paper, the study is performed to supplement MPPT efficiency in
partial solar irradiation and can be simulated with solar power plant
power.
In order to produce photovoltaic inverter and research of photovoltaic
module, a simulation device capable of outputting power of photovoltaic
power generation is needed. The characteristic curve differs for each
photovoltaic cell and the characteristic curve has a nonlinear
characteristic. A power device capable of outputting a curve
corresponding to the characteristic curve is needed. We have studied
about the characteristic curves of these photovoltaic cells and studied
mathematical techniques for expressing curves that can be output
according to the module characteristics. In order to use this system
effectively, we have implemented a simulation and a device to convert a
system AC power to a DC power output from a solar cell using a
single phase inverter.
In order to maximize the power generation efficiency of the solar
photovoltaic system, it is necessary to control the output power at the
maximum power point in nonlinear output characteristics. This is called
maximum power follow-up control (MPPT). Various MPPT algorithms
have been used in the past, but the mismatching phenomenon occurs
due to shadow due to the installation location of the PV power plant
and surrounding environment. If a mismatching phenomenon occurs, it
fails to output at the maximum power point, thereby deteriorating the
solar power generation efficiency. In order to increase this, several
inverters are used in one inverter to control the solar array partly, and
the necessary algorithms are proposed.
The power conversion is performed to compare the efficiency of the
multiple - boost converter in the mismatching. The validity of the
proposed algorithm is verified through simulations and instruments.
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