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High-Frequency Transformer Isolated Bidirectional DC-DC Converter Modules With High Efficiency Over Wide Load Range for 20 kVA Solid-State Transformer

Fan, Haifeng ; Li, Hui

IEEE transactions on power electronics, 2011-12, Vol.26 (12), p.3599-3608 [Periódico revisado por pares]

New York, NY: IEEE

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Título:
High-Frequency Transformer Isolated Bidirectional DC-DC Converter Modules With High Efficiency Over Wide Load Range for 20 kVA Solid-State Transformer
Autor: Fan, Haifeng ; Li, Hui
Assuntos: Applied sciences ; Bidirectional ; Bidirectional power flow ; Circuit properties ; Circulating energy ; Conduction losses ; Converters ; Convertors ; Devices ; DH-HEMTs ; Electric, optical and optoelectronic circuits ; Electrical currents ; Electrical engineering. Electrical power engineering ; Electrical machines ; Electronic circuits ; Electronics ; Exact sciences and technology ; Fault tolerance ; Frequencies ; high efficiency ; high-frequency transformer ; input-series-output-parallel (ISOP) ; isolated bidirectional dc-dc converter ; Modular ; Modules ; Rectifiers ; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices ; Signal convertors ; solid-state transformer (SST) ; Solids ; Switches ; Switching ; Topology ; Transformers ; Transformers and inductors ; Transistors ; Zero voltage switching ; zero voltage switching (ZVS)
É parte de: IEEE transactions on power electronics, 2011-12, Vol.26 (12), p.3599-3608
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Descrição: This paper presents the design of new high-frequency transformer isolated bidirectional dc-dc converter modules connected in input-series-output-parallel (ISOP) for 20-kVA-solid-state transformer. The ISOP modular structure enables the use of low-voltage MOSFETs, featuring low on-state resistance and resulted conduction losses, to address medium-voltage input. A phase-shift dual-half-bridge (DHB) converter is employed to achieve high-frequency galvanic isolation, bidirectional power flow, and zero voltage switching (ZVS) of all switching devices, which leads to low switching losses even with high-frequency operation. Furthermore, an adaptive inductor is proposed as the main energy transfer element of a phase-shift DHB converter so that the circulating energy can be optimized to maintain ZVS at light load and minimize the conduction losses at heavy load as well. As a result, high efficiency over wide load range and high power density can be achieved. In addition, current stress of switching devices can be reduced. A planar transformer adopting printed-circuit-board windings arranged in an interleaved structure is designed to obtain low core and winding loss, solid isolation, and identical parameters in multiple modules. Moreover, the modular structure along with a distributed control provides plug-and-play capability and possible high-level fault tolerance. The experimental results on 1 kW DHB converter modules switching at 50 kHz are presented to validate the theoretical analysis.
Editor: New York, NY: IEEE
Idioma: Inglês

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High-Frequency Transformer Isolated Bidirectional DC-DC Converter Modules With High Efficiency Over Wide Load Range for 20 kVA Solid-State Transformer

Fan, Haifeng ; Li, Hui

New York, NY: IEEE

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