Mitigating the effect of partial shading by triple-tied configuration of PV modules

Kho, Charles Tze Kang; Ahmed, Jubaer; Then, Yi Lung; Kermadi, Mostefa

Abstract

Partial shading is the phenomenon, which occurs when PV modules receive irregular irradiance on a PV array. Due to that, shaded PV modules are bypassed by diodes and significant reduction in power is experienced. To counter such problem, PV modules are connected in different configuration to provide alternative path for current to flow, so that the effect of partial shading is lessened and power attainment is improved. A comprehensive literature review suggests that several PV configurations are proposed namely simple-series (SS), parallel (P), series-parallel (SP), total-cross-tied (TCT), bridge-linked (BL) and honey-comb (HC). In this paper, a comprehensive review is presented to highlight the benefits and limitations of each scheme. To mitigate the limitation of other approaches, a new configuration named triple-tied (TT) is proposed. Several experiments are carried out using both MATLAB Simulink and hardware implementation to validate the performance of proposed configuration. Eleven different partial shading cases are used in the experiments to analyze the output characteristics. Based on the results, the proposed TT configuration outperforms other PV configurations except TCT. However, in TT wiring connections are significantly reduced compared to TCT which makes it favorable in many large-scale PV applications.

Citation

Kho, C. T. K., Ahmed, J., Then, Y. L., & Kermadi, M. (2018). Mitigating the effect of partial shading by triple-tied configuration of PV modules. In 2018 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC) (532-537). https://doi.org/10.1109/APPEEC.2018.8566375

• Conference Name: 2018 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)
• Conference Location: Kota Kinabalu, Malaysia
• Start Date: Oct 7, 2018
• End Date: Oct 10, 2018
• Acceptance Date: Sep 1, 2018
• Online Publication Date: Dec 10, 2018
• Publication Date: 2018
• Deposit Date: Dec 28, 2021
• Publisher: Institute of Electrical and Electronics Engineers
• Pages: 532-537
• Book Title: 2018 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)
• ISBN: 1538656868
• DOI: https://doi.org/10.1109/APPEEC.2018.8566375
• Keywords: PV Configuration, maximum Power, Irradiance Mismatch, Partial Shading, PV, Solar
• Public URL: http://researchrepository.napier.ac.uk/Output/2823341