23 August 2017 Highly efficient GaN HEMTs transformer-less single-phase inverter for grid-tied fuel cell
Author Affiliations +
Abstract
Transformer-less inverters are the most efficient approach to utilize renewable energy sources for grid tied applications. In this paper, a grid-tied fuel cell transformer-less single-phase inverter equipped with GaN HEMTs is proposed. The new topology is derived from conventional H5 inverter. The benefits of using GaN HEMTs are to enable the system to switch at high frequency, which will reduce the size, volume and cost of the system. Moreover, inverter control is designed and proposed to supply real power to the grid and to work as DSTATCOM to mitigate any voltage sag and compensate reactive power in the system. A comparison of the performance of the proposed inverter with Si IGBT and GaN HEMTs was presented to analyze the benefits of using WBG devices. The switching strategy of the new topology creates a new current path which reduces the conduction losses significantly. The analysis of the proposed system was carried out using MATLAB/SIMULINK and PSIM and the results show that the proposed controller improves voltage stability, power quality, mitigates voltage sag and compensates reactive power. Accordingly, the results prove the effectiveness of the system for grid-tied applications.
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Khaled Alatawi, Khaled Alatawi, Fahad Almasoudi, Fahad Almasoudi, Mohammad Matin, Mohammad Matin, } "Highly efficient GaN HEMTs transformer-less single-phase inverter for grid-tied fuel cell", Proc. SPIE 10381, Wide Bandgap Power Devices and Applications II, 1038109 (23 August 2017); doi: 10.1117/12.2275511; https://doi.org/10.1117/12.2275511
PROCEEDINGS
13 PAGES


SHARE
RELATED CONTENT

Defects in GaN based transistors
Proceedings of SPIE (March 07 2014)
Impact of cascode GaN power devices on a bidirectional DC...
Proceedings of SPIE (September 06 2018)
A high-voltage supply used on miniaturized RLG
Proceedings of SPIE (January 25 2016)

Back to Top