AC/DC converter with medium frequency link for railway traction application. Evaluation of semiconductor losses and operating limits.

Casarin, J.; Ladoux, Philippe; Martin, J.A.; Chauchat, Bertrand

doi:10.1109/speedam.2010.5544860

Cited by 13 publications

(6 citation statements)

References 7 publications

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“…In a multiport multi-directional SST, active and reactive power flow control between ports is essential. In addition, multiport SSTs encompass most plug-and-play features as it accommodates Two stage conversion is also possible as reported in [21][22][23][24] as shown in Figure 1b. The absence of bulky capacitors in [21,22] resulted in increased power density and improved reliability.…”

Section: Solid State Transformer Topologiesmentioning

confidence: 99%

“…For instance, size reduction is crucial for wind applications, but having a DC connection is not. On the other hand, for the railway traction drive mentioned in [23], unidirectional power flow is enough [91]. While transformers serving a hybrid AC/DC grid require a multiport SST allowing power exchange between a number of branches.…”

Section: Future Of Solid State Transformersmentioning

confidence: 99%

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Solid State Transformers Topologies, Controllers, and Applications: State-of-the-Art Literature Review

2018

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With the global trend to produce clean electrical energy, the penetration of renewable energy sources in existing electricity infrastructure is expected to increase significantly within the next few years. The solid state transformer (SST) is expected to play an essential role in future smart grid topologies. Unlike traditional magnetic transformer, SST is flexible enough to be of modular construction, enabling bi-directional power flow and can be employed for AC and DC grids. Moreover, SSTs can control the voltage level and modulate both active and reactive power at the point of common coupling without the need to external flexible AC transmission system device as per the current practice in conventional electricity grids. The rapid advancement in power semiconductors switching speed and power handling capacity will soon allow for the commercialisation of grid-rated SSTs. This paper is aimed at introducing a state-of-the-art review for SST proposed topologies, controllers, and applications. Additionally, strengths, weaknesses, opportunities, and threats (SWOT) analysis along with a brief review of market drivers for prospective commercialisation are elaborated.

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Section: Solid State Transformer Topologiesmentioning

confidence: 99%

Section: Future Of Solid State Transformersmentioning

confidence: 99%

Solid State Transformers Topologies, Controllers, and Applications: State-of-the-Art Literature Review

2018

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“…4 and Fig. 5, was installed on the Platform for Research on power electronics Integration and Management of Energy and Storage devices (PRIMES) in Tarbes (France) [6], [7], [8]. This test bench enables the study of one stage in real conditions of operation.…”

Section: Soft Switching Converter Test Benchmentioning

confidence: 99%

“…Experimental results, presented in papers [7] and [8], have shown that a switching frequency of 5kHz can be reached to the detriment of the output voltage range of the converter and huge losses in the clamp circuit (R CLAMP ).…”

Section: Semiconductor Losses and Operating Limitsmentioning

confidence: 99%

Evaluation of high voltage SiC diodes in a medium frequency AC/DC converter for railway traction

Casarin

Ladoux

Chauchat

et al. 2012

International Symposium on Power Electronics Power Electronics, Electrical Drives, Automation and Motion

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Nowadays, the typical railway traction chain, which operates under alternative power supplies, includes a heavy and bulky transformer. In order to reduce the size and the weight of the input transformer, a medium frequency topology, which involves switches in soft commutation mode, is proposed. A test bench, based on one elementary stage of the complete structure, was built. It allows characterizing new high voltage Silicon Carbide devices in soft switching conditions. Switching losses measurements are performed to determine the optimal switching frequency and the operating limits of the converter.

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“…Behind that, snubber capacitors C s were added in the voltage source inverter and a RC snubber was connected to limit the diode recovery energy in the current source inverter. Then, it was shown that the switching frequency could be increased to 5 kHz [12].…”

Section: Direct Ac/dc Converter With Medium Frequency Linkmentioning

confidence: 99%

Outlook for SiC devices in traction converters

Ladoux

Mermet

Casarin

et al. 2012

2012 Electrical Systems for Aircraft, Railway and Ship Propulsion

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Silicon (Si) IGBTs are widely used in railway traction converters. In the near future, Silicon Carbide (SiC) technology will push the limits of switching devices in the three directions: higher blocking voltage, higher operating temperature and higher switching speed. All in all, these large-gap components should improve the traction chain efficiency and the power-weight ratio. Thus, the topology of the traction converter should be reconsidered from the input stage to the inverter including the DC bus. In this paper, the authors show the prospects for developments in traction voltage source inverters and active front end converters.

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AC/DC converter with medium frequency link for railway traction application. Evaluation of semiconductor losses and operating limits.

Cited by 13 publications

References 7 publications

Solid State Transformers Topologies, Controllers, and Applications: State-of-the-Art Literature Review

Solid State Transformers Topologies, Controllers, and Applications: State-of-the-Art Literature Review

Evaluation of high voltage SiC diodes in a medium frequency AC/DC converter for railway traction

Outlook for SiC devices in traction converters

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