| Title |
Improved Global Maximum Power Point Tracking Technique Using Output Characteristics of Solar Array |
| Authors |
Koo-Hyun Yoo ; Woo-Cheol Lee |
| DOI |
10.6113/TKPE.2020.25.2.111 |
| Keywords |
Solar system; GMPPT(Global Maximum Power Point Tracking); Photovoltaic arrays; Partial shading |
| Abstract |
The photovoltaic module has the characteristic that the output power varies according to the amount of insolation. If partial shading occurs in an environment composed of an array, a number of local maximum power points (LMPPs) may be generated according to the shading state. Photovoltaic arrays require global maximum power point tracking due to variations in output characteristics caused by solar radiation and temperature. Conventional algorithms, such as P&O and Incond, do not follow the global maximum power point in a partial shaded solar array. In this study, we propose a technique to follow the global maximum power point by using the correlation of voltage, current, and power in solar arrays. The proposed control technique 2qw validated through simulation and experiments by constructing a 2-kW solar system. |