Power Performance Loss Factor Analysis of the a-Si BIPV Window System Based on the Measured Data of the BIPV Test Facility

Hyo-Mun Lee,Chul-Sung Lee,Jong-Ho Yoon,Seung-Chul Kim

doi:10.3390/app8091645

Abstract

The application of a building-integrated photovoltaic (BIPV) module to an elevation means that the factors causing performance losses in a BIPV are relatively high compared to a photovoltaic (PV) that is installed at the optimal angle. Therefore, it is essential to evaluate the performance loss factors of BIPV and to examine the characteristics of each performance loss factor. Measured data were used to analyze the performance and loss factors (module temperature, dust and soiling, power conditioning system (PCS) standby mode, direct current–alternating current (DC-AC) conversion loss). A performance ratio of International Electrotechnical Commission (IEC) 61724 was used to power the generation performance analysis. The impact analysis of each loss factor is analyzed by using difference of the power generation, the module efficiency, irradiation, and the performance ratio according to the existence of a loss factor. The performance ratio analysis result of this BIPV system shows a range of 66.8–69.5%. The range of performance loss due to each loss factor was as follows; module temperature: 2.2–6.0%, dust and soiling: 2.2–23.1%, PCS standby loss: 4.9–15.7%, DC–AC conversion loss: 4.1–8.0%. Because the effects of the loss factors are different depending on the installation conditions, the performance loss of the system should be minimized by taking this into consideration in the design stage in the BIPV.

Highlights

The total world’s consumption of marketed energy is expected to expand from 549 quadrillion Btu in 2012 to 629 quadrillion Btu in 2020, and to 815 quadrillion Btu in 2040
This paper evaluates the effect using actual monitoring data of a building-integrated photovoltaic (BIPV) system composed of various installation conditions
The increase rate of the PR was calculated to be 5.4% for HR 0◦, 4.1% for SI 30◦, 7.2% for SV 90◦, and 8.0% for WV 90◦. These results showed that designing a BIPV system without considering the impact of the power conditioning system (PCS) or PV array on the other subsystem could reduce the overall performance by up to 8.0%

Summary

Introduction

The total world’s consumption of marketed energy is expected to expand from 549 quadrillion Btu in 2012 to 629 quadrillion Btu in 2020, and to 815 quadrillion Btu in 2040. The total world energy consumption is projected to increase by approximately 48% from 2012 to 2040 [1]. Fossil fuels remain the main sources in the global energy mix, and they are associated with the increase in carbon dioxide (CO2 ) emissions. The deployment of renewable energy sources (RES) can play a critical role in reducing both (CO2 ) emissions and fossil fuel dependency [2]. Renewable energy is the world’s fastest-growing source of energy (an average increase of 2.6%/year), owing to government policies and incentives promoting the use of non-fossil energy sources in many countries [1]. Photovoltaics technology is an elegant technology that is available for the efficient use of solar power [5]

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