Description and Efficiency Comparison of Two 25 kVA DC/AC Isolation Modules

Siemaszko, Daniel; Zurkinden, F.; Fleischli, L.; Villar, Irma; Novaes, Yales Rômulo de; Rufer, A.

doi:10.1080/09398368.2009.11463733

Cited by 7 publications

(18 citation statements)

References 2 publications

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“…1, AC/DC with CBM offers a lower voltage resolution at the output but similar voltage resolution can be obtained at the expense of commutation losses [13], [14]. As mentioned earlier, study in [8] has compared the two topologies of DC/DC dual active bridge and DC/AC of Fig. 4 and Fig.…”

Section: B Isolated Ac/dc/ac Cell Architecturementioning

confidence: 99%

“…• Isolation module has core losses of about 3.9 W/kg and ohmic losses of 7 W/kg, respectively for a 61.6 kVA transformer with rated current of 56A and the overall efficiency of 95.5% claimed at 2000 Hz [8].…”

Section: ) Summary Of the Topologymentioning

confidence: 99%

“…At this moment, the further discussion of ZVS for DC/DC converter is not of interest. The complete switching sequence of the DC/DC converters can be found in [8].…”

Section: A Isolated Ac/dc/dc/ac Cell Architecturementioning

confidence: 99%

“…Reference [8] discusses the implementation and comparison of 25kVA rated converters of architectures shown in Fig. 1 and Fig.…”

Section: Types Of Modular Topologies With Mf/hf Linkmentioning

confidence: 99%

“…Therefore, by changing the phase shift δ while v s leads v p , the amount of active power flow (from v s to v p ) can be changed whereas by changing the phase shift δ while v s lags v p , the amount of active power flow (from v p to v s ) can be changed. Reference [8] has also employed snubber capacitors in parallel with the IGBTs to help the switches turn off with the reduced value of current. It must also be noted that the antiparallel diodes with the IGBTs allow the IGBTs to turn on with reduced value of voltage.…”

Section: A Isolated Ac/dc/dc/ac Cell Architecturementioning

confidence: 99%

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A review of power converter topologies with medium/high frequency transformers for grid interconnection systems

Nasir

Rivera

Toledo

et al. 2016

2016 IEEE International Conference on Automatica (ICA-ACCA)

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Abstract-In recent years, power electronics has evolved dramatically due to their importance in power extracted management from renewable sources. In this paper an overview of grid interconnection systems with galvanic isolation is presented. The most common used topologies from AC/AC, AC/DC, DC/AC and AC/AC conversion are analyzed y summarized in order to provide a good understanding of the existing technologies.

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Section: B Isolated Ac/dc/ac Cell Architecturementioning

confidence: 99%

Section: ) Summary Of the Topologymentioning

confidence: 99%

“…At this moment, the further discussion of ZVS for DC/DC converter is not of interest. The complete switching sequence of the DC/DC converters can be found in [8].…”

Section: A Isolated Ac/dc/dc/ac Cell Architecturementioning

confidence: 99%

“…Reference [8] discusses the implementation and comparison of 25kVA rated converters of architectures shown in Fig. 1 and Fig.…”

Section: Types Of Modular Topologies With Mf/hf Linkmentioning

confidence: 99%

Section: A Isolated Ac/dc/dc/ac Cell Architecturementioning

confidence: 99%

See 3 more Smart Citations

A review of power converter topologies with medium/high frequency transformers for grid interconnection systems

Nasir

Rivera

Toledo

et al. 2016

2016 IEEE International Conference on Automatica (ICA-ACCA)

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Power electronic transformer with adaptive PLL technique for voltage-disturbance ride through

Wang

Luo

Duan

et al. 2018

J. Mod. Power Syst. Clean Energy

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The power electronic transformer (PET) has recently emerged as a type of power converter. It features the basic functions of power conversion and isolation as well as additional functions related to power quality control. A novel PET for a distribution grid called a flexible power distribution unit is proposed in this paper, and the energy exchange mechanism between the network and the load is revealed. A 30 kW 600 VAC/220 VAC/110 VDC medium-frequency isolated prototype is developed and demonstrated. This paper also presents key control strategies of the PET for electrical distribution grid applications, especially under grid voltage disturbance conditions. Moreover, stability issues related to the grid-connected three-phase PET are discussed and verified with an impedance-based analysis. The PET prototype is tested, and it passes the voltage-disturbance ride-through function. The experimental results verify the power quality control abilities of the PET.

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Modular double-cascade converter

Sankala

Korhonen

Strom

et al. 2012

2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

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Medium-voltage motor drives extend the power rating of AC motor drives in industrial applications. Multilevel converters are gaining an ever-stronger foothold in this field. This doctoral dissertation introduces a new topology to the family of modular multilevel converters: the modular double-cascade converter.The modularity of the converter is enabled by the application of multiwinding mediumfrequency isolation transformers. Owing to the innovative transformer link, the converter presents many advantageous properties at a concept level: modularity, high input and output power quality, small footprint, and wide variety of applications, among others. Further, the research demonstrates that the transformer link also plays a key role in the disadvantages of the topology.An extensive simulation study on the new converter is performed. The focus of the simulation study is on the development of control algorithms and the feasibility of the topology. In particular, the circuit and control concepts used in the grid interface, the coupling configurations of the load inverter, and the transformer link operation are thoroughly investigated. Experimental results provide proof-of-concept results on the operation principle of the converter. This work concludes a research collaboration project on multilevel converters between LUT and Vacon Plc. The project was active from 2009 until 2014.

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Description and Efficiency Comparison of Two 25 kVA DC/AC Isolation Modules

Cited by 7 publications

References 2 publications

A review of power converter topologies with medium/high frequency transformers for grid interconnection systems

A review of power converter topologies with medium/high frequency transformers for grid interconnection systems

Power electronic transformer with adaptive PLL technique for voltage-disturbance ride through

Modular double-cascade converter

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