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Your search keyword '"Universitat Politècnica de Catalunya. GREP - Grup de Recerca en Electrònica de Potència"' showing total 2 results
Start Over Author "Universitat Politècnica de Catalunya. GREP - Grup de Recerca en Electrònica de Potència" Journal ieee transactions on industrial electronics
2 results on '"Universitat Politècnica de Catalunya. GREP - Grup de Recerca en Electrònica de Potència"'

1. Modulation and Capacitor Voltage Balancing Control of Multilevel NPC Dual Active Bridge DC–DC Converters

Author

Sergio Busquets-Monge, Alber Filba-Martinez, Josep Bordonau, Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica, and Universitat Politècnica de Catalunya. GREP - Grup de Recerca en Electrònica de Potència

Subjects
Computer science, Dual active bridge, Topology (electrical circuits), Capacitors, Convertidors continu-continu, 02 engineering and technology, Topology, Bridge (nautical), law.invention, law, 0202 electrical engineering, electronic engineering, information engineering, Convertidors de corrent elèctric, Electrical and Electronic Engineering, Modulation, Capacitor voltage balancing, Neutral point clamped (NPC), business.industry, 020208 electrical & electronic engineering, Enginyeria electrònica [Àrees temàtiques de la UPC], Electrical engineering, Bidirectional dc–dc converter, Converters, Electric current converters, Dual (category theory), Bridge circuits, Multilevel (ML) converter, Capacitor, Control and Systems Engineering, Capacitor voltage, Voltage control, DC-to-DC converters, Legged locomotion, business, Switches, Voltage
Abstract

© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes,creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The present paper provides a solution to operate multilevel dual active bridge (ML-DAB) converters built upon neutral point clamped switching legs in a full-bridge disposition and with any number of levels on either side of the converter. The main issue of such converters is addressing the inherent unbalance of the dc-link capacitor voltages, which hinders the proper operation and optimum utilization of the converter. The proposed solution comprises a generalized to N levels modulation and control scheme that allows operating these converters, while guaranteeing the proper balance of the dc-link capacitor voltages. The suitability of the proposed solution is verified through simulation and experimental tests performed in five different converter configurations, three of them with an asymmetric number of voltage levels, proving that capacitor voltage balance is achievable in a wide range of operation conditions. Moreover, the efficiency of the ML-DAB converters is demonstrated to be superior to the conventional two-level DAB case.

Published
2020
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2. Operating Principle and Performance Optimization of a Three-Level NPC Dual-Active-Bridge DC–DC Converter

Author

Sergio Busquets-Monge, Alber Filba-Martinez, Joan Nicolas-Apruzzese, Josep Bordonau, Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica, and Universitat Politècnica de Catalunya. GREP - Grup de Recerca en Electrònica de Potència

Subjects
Engineering, Optimization problem, 020209 energy, Topology (electrical circuits), Convertidors continu-continu, 02 engineering and technology, Degrees of freedom (mechanics), law.invention, Harmonic analysis, DC-to-DC converters, law, Control theory, dual active bridge, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Convertidors de corrent elèctric, Electrical and Electronic Engineering, efficiency optimization, Active neutral point clamped, business.industry, capacitor voltage balancing, 020208 electrical & electronic engineering, Enginyeria electrònica [Àrees temàtiques de la UPC], bidirectional dcdc converter, Converters, multilevel converter, Electric current converters, Capacitor, Control and Systems Engineering, Modulation, business, Voltage
Abstract

© 1982-2012 IEEE. Aiming to improve the performance features of conventional two-level dual-active-bridge (DAB) converters, this paper presents a three-level neutral-point-clamped (NPC) DAB dc-dc converter. A general modulation pattern is initially defined, the dc-link capacitor voltage balancing is analyzed in detail, and a proper balancing control is designed. Then, a set of decoupled optimization problems is formulated as a function of the available modulation degrees of freedom to minimize the predominant converter losses. Finally, a simple and practical specific modulation strategy is provided, resembling the optimum solutions. The good performance of the proposed three-level NPC DAB converter operated with the proposed modulation strategy and voltage balancing control is verified through simulation and experiments. The capacitor voltage balancing can be guaranteed for all operating conditions. In addition, it is concluded that the multilevel topology provides benefits compared with the conventional two-level DAB converter.

Published
2016
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