In this paper, an optimal energy management strategy (EMS) for a light rail vehicle with onboard storage system (ESS) combining batteries (BT) and supercapacitors (SC) is presented. The operating targets the proposed EMS ESS sizing (BT+SC) are obtained by multiobjective (MO) optimization genetic algorithms. MO fitness function expressed in economic terms includes cost of absorbed from catenary, as well BT SC pack (initial investment cycling cost). case study selected tramway Seville. aim to...

This paper proposes and validates a modified direct-self-control (M-DSC) as new control strategy option for permanent-magnet synchronous machine (PMSM) in railway traction applications. Taking into account all the specific requirements of application order to stand-out its capacity, detailed analysis torque optimization technique (MTPA) start-up capacity with low switching frequency have also been presented. Moreover, achieve robust control, two online flux estimation techniques implemented....

This paper presents the application of a Medium-Frequency (MF) Transformer design methodology applied to 400kVA transformer intended for railway traction multi-voltage applications. First, full-scale prototype operating at moderate frequency (<;1kHz), based on silicon-steel and Dual Active Bridge (DAB) has been developed experimentally verified. Then, in order reduce volume weight system, second designed higher operation (>;5kHz), nanocrystalline Series Resonant Converter (SRC), which...

In this paper an optimal energy management strategy (EMS) for a light rail vehicle with onboard storage system combining battery (BT) and supercapacitor (SC) is presented. The targets the proposed EMS are obtained by optimization process multi-objective genetic algorithms (GA). fitness functions expressed in economic terms, correspond to costs related absorbed from catenary as well BT SC cycling cost. case study selected tramway of Sevilla. aim was minimize daily operating cost taking into...

The introduction in the semiconductor market of SiC technology enables power designers development converters with higher density (W/m <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> ) comparison traditional based on Si semiconductors. This work presents redesign a DC-DC converter, used railway traction applications full-SiC modules. low current rating actual modules makes necessary use several to substitute "traditional" ones. is...

This paper presents the design and validation process of a supercapacitor storage based light rail vehicle (tramway). The main aspects system are described: rating, bank modeling, power electronic converter control management algorithms. Based on this procedure, two 200 kW bidirectional multichannel buck-boost modules have been designed connected to their respective banks. Comparing with conventional vehicle, is able achieve an improved efficiency circulate in autonomous mode (without...

The modulation method in inverter-fed ac-drive applications has a great influence the performance of entire system as it generates losses converter and machine, degrades signal waveform quality causes additional noise vibrations. By carefully selecting method, some these unwanted effects can be improved. This paper explores most known PWM-based methods well switching frequency selection on characteristics: machine losses, harmonic or implementation issues. Thanks to analytical multidomain...

This paper presents the design and development of a 100kW Silicon Carbide battery charger operating at switching frequency 60kHz. The main aspects converter such as topology, gate driver electromechanical are described in paper. has been developed experimentally validated full rate.

In this paper an optimal operation mode control for a tramway with hybrid energy storage system (battery+supercapacitor) is presented. The optimization process to obtain the setpoints strategy done by mean of multi-objective genetic algorithm (GA). objective fitness functions are based on cost model considering: absorbed from catenary, battery+supercapacitor cycling and lost in crowbar. aim proposed approach minimize daily operating taking into account degradation systems fulfilling...

In this study, the life cycle costs of railway projects involving hybrid diesel-electric vehicles are analysed. Specifically, analysis focuses on comparison 3 lithium-ion battery technologies (NMC, LTO and LFP) 8 energy management strategies (including rule-based optimization-based strategies). order to develop analysis, a methodology that returns cost each proposed case is presented. The includes optimization diesel generator sizing. A scenario based real line introduced, obtained results...

This paper presents an evaluation of the performance improvements using hybrid IGBT modules; Silicon (Si) and Carbide (SiC) Diode, in 225kW dc-dc converter for electrical storage based light rail vehicle (tramway). First experimental characterization conventional modules is carried out. Second, this characterization, power loss reduction that provides semiconductor calculated, as well achievable switching frequency increase maintaining original thermal design a Si module. Finally, obtained...

The influence of the silicon carbide (SiC) technology in terms volume, weight, efficiency, and cost a 225 kW DC-DC railway converter is detailed this study. Three different power modules technologies have been used: `traditional' silicon-based modules, SiC-hybrid newest full-SiC available market. An experimental comparison presented, showing their switching waveforms compared with those original Si modules. highest speeds obtained by SiC make use traditional module packages impossible...

In this paper the design of PEBBs for multiMW traction power converters is presented. particular 2 different have been designed, developed and tested: a 2-level leg module 3-level NPC (Neutral Point Clamped) module. The most important aspects (the interconnection concept stray inductance minimization) are introduced in paper. Developed can be used to build modular converters, aimed at improving critical like reliability maintainability, as well converter development time cost reduction,...

Hybridization of rolling stock vehicles with onboard energy storage systems in AC and DC electrification system is a realistic future trend that will transform the railway industry. In this emerging market even nowadays there are challenges related to optimization its design, goal minimizing TCO fulfilling current international standards ensure reliable safe operation. context, paper introduces methodology aim at overcoming both issues. The proposed customization analysis applied on real...

Nowadays, friendly urban-adapted railway vehicles are required, in this matter, manufacturers committed to develop more efficient and cost-competitive mobility solutions. The search of the most competitive solution takes on high important when Onboard Energy Storage Systems (OESSs) become part project equation due additional cost they represent over a conventional tramway, but also economic saving allow from electrification point view. This paper proposes an optimization methodology for...

The goal of this paper is to show the improvements in terms size, weight and efficiency a real railway inverter based on SiC-hydrid Hitachi MBM450FS33F-C module, with new 100×140mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> package. developed compared original Si-based 140×190mm modules. Laboratory field tests traction unit are also presented.

This work presents a sensorless torque control of permanent magnet synchronous machines (PMSM) in railway traction applications based on the flux estimation. In order to improve algorithm performance wide speed range, some compensation loops are included. Special techniques for standstill and flying start also proposed. The strategy is validated simulation platform 120kW surface mounted PMSM tramway motor prototype.

Since some decades thyristor based static switches are used for distribution grid applications. These work in Medium Voltage range between 7 kV <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">AC</sub> to 52 and have proved excellent reliability. High Speed Rail (HSR) systems supplied by 25 kVAC one phase. To consume balanced power HV three phase transport grids Neutral Sections (NZ) disposed change the phase-to-phase. reduce effect of NZs HSR...

Fault mode and effects analysis (FMEA) has been used during decades for analysing the of faults in different applications. Initially, FMEA based on risk priority numbers provided information about system, but last years approaches have developed to obtain a more robust evaluation. The proposed enhanced can provide quantitative sensor railway traction drive, variables such as torque, current voltages. In addition previous work, overall performance indicators, energy efficiency comfort, are...