The Influence On Photovoltaic Test And The Optimal Optical Design Of Solar Simulator

Solar simulator is such an equipment that lamp light is used for simulating sunlight, which is indispensable to testing photovoltaic device indoor. Due to huge differences between the simulating light and sunlight described in the standard testing condition (STC), the accuracy of photovoltaic test report will be worse. In this paper, what the affects of the solar simulators'performance on the photovoltaic test report have been introduced elaborately. And then some researches about optimal optics design of solar simulator have been completed successfully.The content of this paper can be divided to 3 parts:①the influence of solar simulator's performance on photovoltaic devices test presented in Chapter 2 and part of Chapter 3;②the optimal optical design of solar simulator included in Chapter 3 and Chapter 4;③the primary optical design of three particular solar simulator;In the first part, the affects of irradiance non-uniformity and spectral mismatch degree of solar simulator on testing photovoltaic device have been researched mainly. At first, the relationship of irradiance non-uniformity, illuminated current voltage characteristic and equivalent circuit parameters of solar cell, has been discussed by designing some experiments and using Lambert-W function and artificial neural network dark casket. And then, the correction methods of spectral mismatch degree have been discussed through some theoretic deduction about the relationship among the spectral distribution of solar simulator, the response sensitivity and short circuit current of solar cell. The results show that improving the performance of solar simulator is an effective way to reducing the effect on photovoltaic test. In the second part, the optimal optical design of solar simulator has been completed to make the irradiance non-uniformity and spectral mismatch grade reach Class A. Firstly, the spectral characteristic of impulse xenon lamp has been measured elaborately. Then a large area solar simulator with Class A irradiance non-uniformity (<±2%) has been design successfully through combining artificial neural network algorithm and optical software TracePro. Finally a fitting sunlight filter has been designed successfully using software Essential Macleod, which can makes the spectral mismatch grade reach Class A(<±25%).In addition, some primary optical designs of 3 particular solar simulators have been discussed, which include super concentrated solar simulator, UV accelerated solar simulator and the solar simulator suitable to testing thin film solar cell.The contributions of the paper are that proposing some new methods to design solar simulators with lower cost, and designing some commercial products successfully.