Proceedings ArticleDOI
Design of Power Electronic Transformer based on Cascaded H-bridge Multilevel Converter
Hossein Iman-Eini,Shahrokh Farhangi,Jean-Luc Schanen,J. Aime +3 more
- pp 877-882
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TLDR
In this article, the optimum design of a power electronic transformer (PET) based on state-of-the-art cascaded H-bridge multilevel converter is investigated, and a new and simple control method for balancing the cascaded DC buses has been introduced.Abstract:
One key component of the future automation in electrical network is the replacement of conventional distribution transformers by an all-solid-state (power- electronic) alternative. In this paper, the optimum design of a power electronic transformer (PET) based on state of the art cascaded H-bridge multilevel converter is investigated. In the design process, a new and simple control method for balancing the cascaded H-bridge DC buses has been introduced. The proposed PET is extremely modular and can be extended for different voltage and power levels. It performs typical functions and has advantages such as power factor correction, elimination of voltage sag and swell, and reduction of voltage flicker in load side. Also in comparison to conventional transformers, it has lower weight, lower volume and eliminates necessity for toxic dielectric coolants.read more
Citations
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Proceedings ArticleDOI
Topology comparison for Solid State Transformer implementation
TL;DR: In this paper, a comparison of six representative topologies for the implementation of Solid State Transformers (SST) is performed, and it is concluded that a three-stage configuration comprising distinct AC-DC, DC-DC and DC-AC stages results in the most suitable implementation.
Journal ArticleDOI
A Modular Strategy for Control and Voltage Balancing of Cascaded H-Bridge Rectifiers
TL;DR: In this article, a new strategy for voltage balancing of distinct dc buses in cascaded H-bridge rectifiers is presented, which can be used for an arbitrary number of series H-bridges, different voltage levels, and different power levels in unidirectional or bidirectional rectifiers.
Journal ArticleDOI
Flexible Power Electronic Transformer
Mehran Sabahi,A. Y. Goharrizi,Seyed Hossein Hosseini,Mohammad Bagher Bana Sharifian,Gevorg B. Gharehpetian +4 more
TL;DR: In this article, a modular flexible power electronic transformer (FPET) is proposed, which is flexible enough to meet future needs of power electronic centralized systems, and the main feature of the FPET is the independent operation of modules each of which contains one port.
Journal ArticleDOI
Cascade dual-boost/buck active-front-end converter for intelligent universal transformer
TL;DR: A new cascade active-front-end converter based on dual-boost/buck converters is proposed for an intelligent universal transformer (IUT), which allows adjusting the power factor to control both the active and reactive powers between medium and low voltage levels.
Journal ArticleDOI
A Modified DC Power Electronic Transformer Based on Series Connection of Full-Bridge Converters
TL;DR: The proposed DCPET has fewer power semiconductor devices and high-frequency isolation transformers, which can improve the power density and reliability, and soft switching is guaranteed for all the switches, which is beneficial to increase switching frequency and improve power density.
References
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Journal ArticleDOI
A Power Electronic-Based Distribution Transformer
TL;DR: In this paper, a new kind of distribution transformer is proposed for the twenty-first century, one that can be made self-regulating, oil-free, and able to correct power quality problems.
Journal ArticleDOI
Analysis and design of electronic transformers for electric power distribution system
TL;DR: In this paper, the concept of electronic transformers is further extended and explored for its suitability in power distribution systems, and it is shown that a transformer with a conventional grain-oriented silicon-steel core can process three times the power at 1 kHz operating frequency as compared to 60 Hz.
Proceedings ArticleDOI
Multilevel intelligent universal transformer for medium voltage applications
TL;DR: The basic circuit and the operating principle for the multilevel converter based IUT and its applications for medium voltages are described and various power quality enhancement features are demonstrated with computer simulation for a complete IUT circuit.
Proceedings ArticleDOI
Analysis and design of electronic transformers for electric power distribution system
TL;DR: In this paper, the concept of electronic transformers is further discussed and several possible topologies employing static power converters connected on the primary and secondary side in combination with magnetic circuits are explored to realize a high-frequency AC link.
Journal ArticleDOI
An energy-based control for an n-H-bridges multilevel active rectifier
TL;DR: The use of a passivity-based control (PBC) designed via energy considerations and without small-signal linearization properly fits stability problems related to this type of converter and the system dc buses are independent and stable as experimental results demonstrate.