Sustainability Aspects of Energy Conversion in Modern  High-Speed Trains with Traction Induction Motors

Rosen, Marc A.; Nicola, Doru A.; Bulucea, Cornelia Aida; Cismaru, Daniel Cristian

doi:10.3390/su7033441

Cited by 3 publications

(14 citation statements)

References 4 publications

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“…The two electric machine types have different efficiencies at different operation points in terms of electromagnetic torque [1][2][3][4][5][6][7][8]. An accurate insight into these two types of electric traction motors (three-phase induction motors and threephase synchronous motors) is presented subsequently.…”

Section: Introductionmentioning

confidence: 99%

“…As a traction motor the induction motor must satisfy several criteria [1][2][4][5][6][7]: -high torque developed at low speeds, even during start-up, and -operation over a large range of the supply frequency, from roughly 0.4-1 Hz to 140-180 Hz, both as a motor and as a brake (generator).…”

Section: Introductionmentioning

confidence: 99%

“…The final decades of the 20 th century and the first decade of the 21 st century were marked by a significant rise in the speed of electric railway vehicles due to progress in power electronics for electric locomotive technology [1][2][3][4][5][6][7]. Consequently, nowadays we are encountering a rethinking and redrawing of the architecture of electric railway vehicles, regardless of the type of the electric contact line (in DC or in AC).…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, nowadays we are encountering a rethinking and redrawing of the architecture of electric railway vehicles, regardless of the type of the electric contact line (in DC or in AC). Under the vision of sustainable development and industrial ecology, the key points of operation of electric railway vehicles nowadays are related to the high electromagnetic torque developed by traction motors, energy savings and environmental impact mitigation, particularly through high exergy efficiency [1][2][4][5][6]. Moreover, the variable voltage/current variable frequency (VV/CVF) power conversion technology facilitates the use of on-board AC drives which ensure regenerative braking and thus make possible efficient management of energy supply of high speed trains [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…Under the vision of sustainable development and industrial ecology, the key points of operation of electric railway vehicles nowadays are related to the high electromagnetic torque developed by traction motors, energy savings and environmental impact mitigation, particularly through high exergy efficiency [1][2][4][5][6]. Moreover, the variable voltage/current variable frequency (VV/CVF) power conversion technology facilitates the use of on-board AC drives which ensure regenerative braking and thus make possible efficient management of energy supply of high speed trains [1][2][3][4][5][6][7][8]. But note that these advantages are met under the condition of using in traction drives the AC electric motors, namely of induction type or synchronous type, regardless of the contact line type.…”

Section: Introductionmentioning

confidence: 99%

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Operation analysis of AC traction motors in terms of electromagnetic torque capability on sustainable railway vehicles

et al. 2016

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Abstract. Sustainable operation of electric railway systems represents a significant purpose nowadays in the development of high power and high speed locomotives and trains. At present, high speed electric vehicles mostly work with three-phase induction motors or three-phase synchronous motors as traction motors. The two electric machine types have different efficiencies at different operation points, and experience differences with respect to safety, speed and power, energy use and exergy efficiency. An important issue that correlates these aspects is the electromagnetic torque developed by an electric traction motor. In order to provide an overview of the technical performance of the operation of sustainable railway systems, a detailed analysis is carried out of the electromagnetic torque capability of AC electric motors utilized as traction motors in modern locomotives of high power and/or high speed. The results of this work may help in enhancing the main criteria for optimising the safe and sustainable operation of electric railway traction systems.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Operation analysis of AC traction motors in terms of electromagnetic torque capability on sustainable railway vehicles

et al. 2016

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Optimal Selection of Asynchronous Motor-Gearhead Couple Fed by VFD for Electrified Vehicle Propulsion

2021

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Widespread applications of AC motors fed by variable frequency drives in electrified vehicles have become a conventional technical solution. The flexibility of control, low cost, and high energy efficiency attract developers and engineers to apply these appliances in cars, railway trains, trams, etc. The distinctive characteristic of vehicles is a wide range of required rotation speed and torque. This circumstance means that the problems of the AC motor (nominal power, synchronous speed) and gearbox (transmission ratio) become non-trivial and necessitate optimal selection to ensure the best functionality of the entire driving system. This study proposes an approach for the optimal choice of a specific AC motor (nominal rating, synchronous speed) and the transmission ratio of the gearbox by analyzing the entire system’s losses. The optimal selection of an AC motor ensures maximum energy efficiency for a specific transportation driving cycle.

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Comparative Study of Frequency Converters for Doubly Fed Induction Machines

Nahdi¹,

Maga²

2018

Sustainability

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The efficient utilization of energy sources seems to be one of the most challenging problems for designers and scientists alike. This challenge particularly applies to power electronics, where the increasing value of energy density leads to demands for optimization processes and better exploitation (and distribution) of available power sources. As a result, the implementation of frequency-controlled systems is more often in the spotlight. The systems with doubly fed induction machines and a frequency converter in the rotor circuit are typical representatives of these demands. In a wide spectrum of power electronic systems, frequency converters are often used that have a constant current, a diode rectifier, and a thyristor inverter. This article provides a novel approach to modeling methodology, and presents a unique comparison of four different frequency converter schemes that are connected to a doubly fed induction machine. This article presents the modeling methodology itself, as well as the results based on an asynchronous generator motor fed by different frequency converters, a spectral analysis of the output voltage of the used frequency converters, and a comparison of the different technologies. Based on the above, this paper recommends the use of a multistage-multilevel frequency converter scheme.

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Sustainability Aspects of Energy Conversion in Modern High-Speed Trains with Traction Induction Motors

Cited by 3 publications

References 4 publications

Operation analysis of AC traction motors in terms of electromagnetic torque capability on sustainable railway vehicles

Operation analysis of AC traction motors in terms of electromagnetic torque capability on sustainable railway vehicles

Optimal Selection of Asynchronous Motor-Gearhead Couple Fed by VFD for Electrified Vehicle Propulsion

Comparative Study of Frequency Converters for Doubly Fed Induction Machines

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