Inverting DC traction substation with active power filtering incorporated

Randewijk, Peter Jan; Enslin, J.H.R.

doi:10.1109/pesc.1995.474836

Cited by 30 publications

(9 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, higher noise level caused by the circulating current may interfere with the signal conditioning of the DSP controller. The zero sequence circulating current can be eliminated by installing a Y-connected transformer between the AXC and the utility grid [2], [3], but this could significantly increase the size and weight of the AXC system.…”

Section: B DC Bus Voltage Controlmentioning

confidence: 99%

Design of an Auxiliary Converter for the Diode Rectifier and the Analysis of the Circulating Current

Cheng

Hou

2008

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

In variable-speed drives systems, diode rectifiers and thyristor rectifiers are often used as the front-end circuit for ac-dc conversion. The advantages of the conventional rectifier are its simplicity and high reliability. The drawbacks include the harmonic current distortion and the lack of re-generation capability. In recent years, industries adopt the transistor-based active front-end (AFE) technologies to accomplish high power factor operation and re-generation capability. However, the cost of AFE is much higher than the conventional diode/thyristor front-end. Besides, the AFE is often less reliable than the diode/thyristor front-end under utility transients. In this paper, an IGBT-based auxiliary converter (AXC) system is proposed. The AXC operates as a shunt active filter to compensate the harmonic current of the rectifier when the load consumes power. When the dc load re-generates, the AXC system can channel the re-generation energy back into the utility system. The combination of the diode rectifier and the AXC can accomplish unity power factor operation and re-generation, but it also causes circulating current between the AXC and the rectifier, which leads to higher operational losses and higher noise level. The mechanism of the circulating current is analyzed in this paper, and solutions are also presented. Computer simulation and field test results are presented to validate the performance of the proposed AXC system.

show abstract

Section: B DC Bus Voltage Controlmentioning

confidence: 99%

Design of an Auxiliary Converter for the Diode Rectifier and the Analysis of the Circulating Current

Cheng

Hou

2008

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

show abstract

“…The importance of regeneration is given by the need to increase the efficiency and reduce the energy consumption, but also by the amount of energy which can be regenerated [6]- [7]. The electric traction motors are able to transform the kinetic energy into electrical energy, but, only a small amount of the resulted energy is usually reused for the auxiliary services.…”

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)

View full text Add to dashboard Cite

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.

show abstract

“…Even though regeneration leads to energy savings, it can cause many problems to the power electronic converters and power systems [63].…”

Section: Introductionmentioning

confidence: 99%