Simulation Study of Regenerative Inverter for DC Traction Substation

Bae, Changhan; Han, Moonseob; Kim, Y.K.; Choi, Chang-Youl; Jang, Su-Jin

doi:10.1109/icems.2005.202789

Cited by 17 publications

(12 citation statements)

References 4 publications

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“…The transformer-rectifier substations include usually uncontrolled rectifiers, whose pulse number is determined by the traction transformer windings and the static converter configuration [1][2][3][4]. The common schemes are 6-pulse [5,6], 12-pulse [7][8][9][10][11], and even 24-pulse diode-based rectifiers [11][12][13]. The use of controlled rectifiers in the traction substations (TSs) was considered much later.…”

Section: Introductionmentioning

confidence: 99%

A Review of the Energy Efficiency Improvement in DC Railway Systems

Popescu

Bitoleanu

2019

Energies

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This study is focused on the topical issue of increasing the energy efficiency in DC railway systems, in the context of global concerns for reducing the CO2 emissions by minimizing the energy consumption and energy loss. The main achievements in this complex issue are synthesized and discussed in a comprehensive review, emphasizing the implementation and application of the existing solutions on concrete case studies. Thus, all specific subtopics related to the energy efficiency are covered, starting with power quality conditioning and continuing with the recovery of braking energy, of which a large part is lost in the classic DC-traction substations. The solutions of onboard and wayside storage systems for the braking energy are discussed and compared, and practical examples are given. Then, the achievements in transforming the existing DC-traction substations in reversible substations with capabilities of power quality improvement are systematically reviewed by illustrating the main results of recent research on this topic. They include the equipment available on the market and solutions validated through implementations on experimental models. Through the results of this extensive review, useful reference and support are provided for the research and development focused on energy efficient traction systems.

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Section: Introductionmentioning

confidence: 99%

A Review of the Energy Efficiency Improvement in DC Railway Systems

Popescu

Bitoleanu

2019

Energies

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“…Transient-state simulations usually rely on the specific simulation software or tools, such as Simulink, Psim, and Pspice. Transient-state simulations are mainly used in equipment-level simulations [41,42] or occasionally in short-circuit simulations [43].…”

Section: Introductionmentioning

confidence: 99%

A new hybrid simulation integrating transient-state and steady-state models for the analysis of reversible DC traction power systems

Zhang

Tian

Tricoli

et al. 2019

International Journal of Electrical Power & Energy Systems

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This paper presents a new hybrid simulation method for reversible traction power supply systems (RTPSSs) supplied by four-quadrant converters (4QC). RTPSSs overcome several drawbacks of conventional DC electrification systems, such as wasting of braking energy, output voltage fluctuation, and low power factor at light load conditions. The paper introduces the system topology of a RTPSS and illustrates its advantages over standard DC systems. A hybrid simulation method is proposed to study the performance of the RTPSS taking into account the dynamics of multiple trains. This hybrid simulation integrates train motion, steady-state and transient-state models, and is able to evaluate both the system-level steady-state performance (voltage, current, power and energy) and the equipment-level transient-state performance (harmonics, ripple, power factor and stability). Structure and signals flow of this hybrid simulation system have been introduced, and the methodology of modeling has been presented. The validity and applicability of the proposed hybrid simulation method have been proved by a case study of a 10 km railway line with 6 substations. To date, no other work has accomplished the steadystate and transient-state study using a single integrated simulation.

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“…In order to reduce the harmonic distortion of the supply current, a structure of twelve-pulse rectifier is often adopted, consisting of two diode bridges connected in series or in parallel and supplied from two secondary windings of the transformer, one in star connection and the other in delta connection [1], [2]. The common rated DC voltages provided by the rectifier are: 750 V (most trams and metro rail including one in Bucharest); 1500 V (regional express trains and Intercity) and 3 kV (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…The methods identified so far for braking energy recovery involve either the use of various mobile/stationary energy storage devices [8], [9] or the direct return to the AC-power utility [2]- [4], [6], [7], [10], [11].…”

Section: Introductionmentioning

confidence: 99%

System for converting the DC traction substations into active substations

Popescu

Bitoleanu

Suru

et al. 2015

2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE)

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This paper is concerned with the possibilities of transformation the DC traction substations with uncontrolled rectifiers into active substation, being able to ensure both the braking energy recovery and active filtering function. There are a lot of approaches on the management of regenerative braking energy, most of them based on energy storage systems or the concept of reversible substation. Few references refer to the addition of complementary functions, such as harmonic filtering, and involve the adoption of specific structures without further argumentation. In this paper, the intention is to analyze and find argumentations on the possibilities of coupling a three-phase active power filter based on voltage source inverter topology in the power structure of a DC traction substation. The most used types of uncontrolled rectifiers, i.e. the three-phase bridge scheme and both 12-pulse parallel and series structures are taken into consideration. Based on correlation between the DCline and AC-line voltages, it is shown that the active power filter can be connected directly in the secondary of the existing traction transformer only in the case of 12-pulse series rectifier. A dedicated recovery transformer is required for the other two schemes of rectifiers and some considerations and results on the compensating power and correlation between the active filtering performance and the voltage in the recovery transformer primary are presented.

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Simulation Study of Regenerative Inverter for DC Traction Substation

Cited by 17 publications

References 4 publications

A Review of the Energy Efficiency Improvement in DC Railway Systems

A Review of the Energy Efficiency Improvement in DC Railway Systems

A new hybrid simulation integrating transient-state and steady-state models for the analysis of reversible DC traction power systems

System for converting the DC traction substations into active substations

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