Determination Of Weighted Efficiency Equation For SB3000HF Inverter

Che Zulkarnain, Che Ain Zulaikha (2017) Determination Of Weighted Efficiency Equation For SB3000HF Inverter. Technical Report. UTeM, Melaka. (Submitted)

Text Determination Of Weighted Efficiency Equation For SB3000HF Inverter - Che Ain Zulaikha Che Zulkarnain - 24 pages.pdf - Submitted Version Download (551kB)

Abstract

System yield is a mechanism used to predict the Return of Investment before installed the solar PV and also to estimate the customer profit. Inverter efficiency is one of the important elements in order to calculate system yield. However, Peak inverter efficiency was used and it is inaccurate because it only occurs at ideal condition of Standard Test Condition and this condition rarely achieved so it’s not reliable to use. Thus, a better representation is weighted efficiency such as European efficiency and California Energy Commission (CEC) efficiency because weighted efficiency takes into account the inverter will behave in complete daily profile of irradiance. Anyhow European efficiency is most suitable for medium irradiation region and CEC efficiency for high irradiation region. Tropical Climate is unique, hence, this project aimed at developing a Tropical efficiency equation according to IEC 61683 standards. To do so a one year irradiance, G and temperature, T data of Malaysia was used and simulated by using PV simulator on SB3000HF inverter. The result shows that the tropical efficiency match the real system yield and the best in terms of validation if compared to Euro efficiency and CEC efficiency. This project also suggests an alternative method to produce Tropical Efficiency equation that is by using Multiple Linear Regression. The correctness of the alternative method was justified since that Coefficient of determination with the conventional method gives a value of more than 0.9.

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