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https://hdl.handle.net/10316/103880
Título: | Model Predictive Control for Paralleled Uninterruptible Power Supplies with an Additional Inverter Leg for Load-Side Neutral Connection | Autor: | Oliveira, Tiago Caseiro, Luís Miguel Antunes Mendes, André Cruz, Sérgio Perdigão, Marina |
Palavras-chave: | model predictive control; uninterruptible power supply; multilevel converters; zero sequence circulating current; power quality | Data: | 2021 | Editora: | MDPI | Projeto: | Project SAICT-45-2017-POCI-01-0145-FEDER-029112— PTDC/EEI-EEE/29112/2017 FCT - scholarship 2020.04803.BD |
Título da revista, periódico, livro ou evento: | Energies | Volume: | 14 | Número: | 8 | Resumo: | Uninterruptible Power Supplies (UPS) have been demonstrated to be the key technology in feeding either single- and three-phase loads in a wide range of critical applications, such as high-tier datacenters and medical facilities. To increase the overall system power capacity and resilience, UPS systems are usually connected in parallel. When UPS systems are parallel connected, a circulating current can rise, inhibiting correct system operation. Moreover, having a controlled load power distribution is another fundamental requirement in paralleled UPS systems. However, strategies to ensure these two topics have not been explored to date for UPS systems with a loadside neutral connection. This paper proposes an innovative Finite Control Set Model Predictive Control (FCS-MPC) strategy that ensures circulating current elimination and controlled load power distribution for paralleled UPS systems that use an additional inverter leg for load neutral point connection. Additionally, a system topology based on two parallel-connected UPS systems that can simultaneously supply single- and three-phase critical loads is proposed. Experimental results show the effectiveness and robustness of the proposed control techniques even when different types of loads are connected to the UPS systems. | URI: | https://hdl.handle.net/10316/103880 | ISSN: | 1996-1073 | DOI: | 10.3390/en14082270 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Eng.Electrotécnica - Artigos em Revistas Internacionais I&D IT - Artigos em Revistas Internacionais |
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Model-predictive-control-for-paralleled-uninterruptible-power-supplies-with-an-additional-inverter-leg-for-loadside-neutral-connection2021EnergiesOpen-Access.pdf | 9.14 MB | Adobe PDF | Ver/Abrir |
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