Cooperative and Dynamically Weighted Model Predictive Control of a 3-Level Uninterruptible Power Supply With Improved Performance and Dynamic Response

In this paper, we propose a 3-level double conversion uninterruptible power supply with a new cooperative and dynamically weighted model predictive control technique. A 3-level dc-dc converter is used to improve the dc bus balance and the overall response of the uninterruptible power supply (UPS). A...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2020-06, Vol.67 (6), p.4934-4945
Main Authors: Caseiro, Luis M. A., Mendes, Andre M. S., Cruz, Sergio M. A.
Format: Article
Language:English
Subjects:
Capacitors
Control systems
Converters
Cooperative control
Data buses
Dynamic response
Integrated circuits
Neutral-point-clamped (NPC)
optimal switching vector model predictive control (OSV-MPC)
Power management
Power supply
Power system management
Predictive control
Steady-state
Uninterruptible power supplies
uninterruptible power supply (UPS)
Uninterruptible power systems
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Summary:In this paper, we propose a 3-level double conversion uninterruptible power supply with a new cooperative and dynamically weighted model predictive control technique. A 3-level dc-dc converter is used to improve the dc bus balance and the overall response of the uninterruptible power supply (UPS). A new cooperative model predictive control principle is proposed to enhance the response of multiconverter systems. New controllers are proposed for all converters of the UPS, based on the dynamically weighted model predictive control technique and using the presented cooperative principle. A new power management technique is also proposed for the UPS. The proposed 3-level UPS system presents improved dynamic response and steady-state performance in distinct operating points, when compared to the conventional system. Experimental results demonstrate the advantages of each proposed novelty.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2019.2921283