Optimized space-vector-modulated quasi Z-source NPC inverter for solar PV application

Effah, Francis Boafo; Okyere, Philip Yaw; Wheeler, Patrick; Watson, Alan; Clare, Jon

Abstract

An optimized space vector modulation technique for controlling a quasi Z-source NPC inverter for solar photovoltaic application is presented in this paper. The presented algorithm optimizes the number of switching transitions over a switching cycle by modifying the placement of the shoot-through states in some of the sub-triangles of the space vector diagram of a conventional neutral point clamped inverter. This approach leads to a reduction in the total losses of the quasi Z-source inverter by reducing the switching losses. The presented concepts are expected to be cheaper than existing methods because a reduction in losses will lead to the use of smaller and cheaper heat sinks in practical implementation. In this paper, the effectiveness of the proposed optimized space vector modulation technique has been demonstrated through simulations in SABER®.

Citation

Effah, F. B., Okyere, P. Y., Wheeler, P., Watson, A., & Clare, J. (2019). Optimized space-vector-modulated quasi Z-source NPC inverter for solar PV application. Carpathian Journal of Electrical Engineering, 13(1), 17-29

• Journal Article Type: Article
• Publication Date: 2019
• Deposit Date: Nov 20, 2024
• Journal: Carpathian Journal of Electrical Engineering
• Print ISSN: 1843-7583
• Publisher: Universitatea Tehnica Cluj-Napoca
• Peer Reviewed: Peer Reviewed
• Volume: 13
• Issue: 1
• Pages: 17-29
• Public URL: https://nottingham-repository.worktribe.com/output/36292680