Performance Analysis of a Grid-connected High Concentrating Photovoltaic System under Practical Operation Conditions

Abstract

High concentrating photovoltaic (HCPV) is a promising technique for the practical commercial utilization of solar energy. However, the performance of a HCPV system is significantly influenced by environmental parameters such as solar direct normal irradiance (DNI) level and environmental temperature. This paper analyzes the performance of a 9 kW p grid-connected HCPV system in Kunming (Yunnan, China), during practical field operations over an entire year, and discusses how the environmental parameters influence the performance from both the energy conversion and power inversion perspective. Large variations in the performance of the HCPV system have been observed for different months, due to the respective changes in the environmental parameters. The DNI level has been found to be a dominant parameter that mainly determines the amount of energy production as well as the performance ratio of the HCPV system. The environmental temperature and wind velocity have less influence on the system performance ratio than expected. Based on the performance of the present HCPV system, a quantified correlation between the output power and the direct normal irradiance has been derived, which provides guidelines for both the cogent application and the modeling of HCPV techniques for grid-connected power generation.

Optimum heat spreader size for producing maximum net power from high‐concentration photovoltaic systems

“…The average wind speed in Kunmig during the autumn season is 1.94 m/s (www.weatherspark.com), and the present results showed that the power consumed by the tracker was 3.608 W, which represents a 0.5% deviation from the experimental data. Furthermore, the present results of power consumed by the tracker were also compared with the one-year experimental results from the practical field operation of the 9 kW HCPV FIGURE 5 Top view of optimal heat spreader of photovoltaic module segment system constructed in Kunming, China [43]. Their system consisted of 96 modules, and each had 24 solar cells.…”

“…Furthermore, the present results of power consumed by the tracker were also compared with the one‐year experimental results from the practical field operation of the 9 kW HCPV system constructed in Kunming, China [43]. Their system consisted of 96 modules, and each had 24 solar cells.…”