Power Electronics Technologies for Railway Vehicles

Taufiq, J.A.

doi:10.1109/pccon.2007.373146

Cited by 67 publications

(24 citation statements)

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“…The critical problems of MFT design are frequency, power and efficiency. In [10] and [19], the MFT of 1.5MVA/5kHz and 10 kHz/350kVA with a high insulation voltage were designed for high speed railway applications by Alstom and ABB. For a 1 kHz applications, a silicon steel core can be used due to its good its magnetic field intensity.…”

Section: Mft Design For the New Convertermentioning

confidence: 99%

A Medium-Voltage Matrix Converter Topology for Wind Power Conversion with Medium Frequency Transformers

Gu¹,

Krishnamoorthy²,

Enjeti³

et al. 2014

Journal of Power Electronics

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A new type of topology with medium-frequency-transformer (MFT) isolation for medium voltage wind power generation systems is proposed in this paper. This type of converter is a high density power conversion system, with high performance features suitable for next generation wind power systems in either on-shore or off-shore applications. The proposed topology employs single-phase cascaded multi-level AC-AC converters on the grid side and three phase matrix converters on the generator side, which are interfaced by medium frequency transformers. This avoids DC-Link electrolytic capacitors and/or resonant L-C components in the power flow path thereby improving the power density and system reliability. Several configurations are given to fit different applications. The modulation and control strategy has been detailed. As two important part of the whole system, a novel single phase AC-AC converter topology with its reliable six-step switching technique and a novel symmetrical 11-segment modulation strategy for two stage matrix converter (TSMC) is proposed at the special situation of medium frequency chopping. The validity of the proposed concept has been verified by simulation results and experiment waveforms from a scaled down laboratory prototype.

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Section: Mft Design For the New Convertermentioning

confidence: 99%

A Medium-Voltage Matrix Converter Topology for Wind Power Conversion with Medium Frequency Transformers

Gu¹,

Krishnamoorthy²,

Enjeti³

et al. 2014

Journal of Power Electronics

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“…No commercial power devices are currently available to handle the associated peak voltage stress. Modular multilevel configurations based on input series and output parallel (ISOP) are widely used to address this issue in which low voltage converters are connected in series to share the voltage and power [5]- [13]. To avoid power and voltage balancing problems, additional balancing circuits and control strategies are needed [14].…”

Section: Introductionmentioning

confidence: 99%

“…Varies power conversion topologies and applications of the SST have been discussed in literatures [5]- [13]. Many well-known MV SST designs are depicted in Fig.…”

Section: Introductionmentioning

confidence: 99%

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15 kV SiC MOSFET: An Enabling Technology for Medium Voltage Solid State Transformers

et al. 2017

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Abstract-Due to much higher achievable blocking voltage and faster switching speed, power devices based on wide bandgap (WBG) silicon carbide (SiC) material are ideal for medium voltage (MV) power electronics applications. For example, a 15 kV SiC MOSFET allows a simple and efficient two-level converter configuration for a 7.2 kV solid state transformer (SST) for smart grid applications. Compared with multilevel input series and output parallel (ISOP) solution, this approach offers higher efficiency and reliability, reduced system weight and cost by operating at medium to high switching frequency. However, the main concern is how to precisely implement this device in different MV applications, achieving highest switching frequency while maintaining good thermal performance. This paper reviews the characteristics of 15 kV SiC MOSFET and offers a comprehensive guideline of implementing this device in practical MV power conversion scenarios such as AC-DC, DC-DC and AC-AC in terms of topology selection, loss optimization and thermal management.Index Terms-15 kV SiC MOSFET, efficiency, medium voltage, medium voltage power electronics, reliability, solid state transformer, smart transformer.

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“…Energy saving effect as well as preventing regenerative failure is expected. Some research projects on the application of the energy storage devices to railway systems have been reported in [1][2][3][4][5][6]. Most of them discussed reasonable circuit configuration and sizing of energy storage system, however, very few papers that deal with optimal charging/discharging control of the energy storage can be found.…”

Section: Introductionmentioning

confidence: 99%

Charge/discharge control of a train with on-board energy storage devices for energy minimization and consideration of catenary free operation

Miyatake

Matsuda

Haga

2008

WIT Transactions on the Built Environment

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The optimal operation of rail vehicle with on-board energy storage device minimizing total energy consumption is discussed in this paper. Until now, not enough research deals with the optimal control of the devices. The authors have developed the mathematical model based on a general optimization technique. In our study, the electric double layer capacitor (EDLC) is assumed as an energy storage device, because of its high power density etc. The proposed method can determine the optimal acceleration/deceleration and current commands at every sampling point under fixed conditions of transfer time and distance. The authors have also modified it for applying to catenary free operation. Using the proposed methods, simulations were implemented in some cases. The trend of optimal solutions such as values of control inputs and energy consumption is finally discussed.

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Power Electronics Technologies for Railway Vehicles

Cited by 67 publications

References 0 publications

A Medium-Voltage Matrix Converter Topology for Wind Power Conversion with Medium Frequency Transformers

A Medium-Voltage Matrix Converter Topology for Wind Power Conversion with Medium Frequency Transformers

15 kV SiC MOSFET: An Enabling Technology for Medium Voltage Solid State Transformers

Charge/discharge control of a train with on-board energy storage devices for energy minimization and consideration of catenary free operation

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