The calculation of train performance

Chymera, M.; Goodman, C.J.

doi:10.1049/cp.2014.1431

Cited by 6 publications

(1 citation statement)

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“…In (1), the first term accounts for acceleration resistance, the second term accounts for gradient resistance, and rest account for friction and drag resistance

T_{E} = \overset{false^}{m} \frac{normalΔ v}{normalΔ t} + m g \sin θ + A + B v + C v^{2}

where

\overset{false^}{m}

and m are tram effective and normal masses given as

\overset{false^}{m} = m_{tare} false(1 + λ false) + m_{load}

and

m = m_{tare} + m_{load}

, respectively, where m tare is the vehicle tare mass (tonne), λ is rotary allowance accounting for angular acceleration of the rotating parts (motor rotors, gears, and wheel sets), and m load is the mass of the vehicle load (tonne).

normalΔ v / normalΔ t

is a change in velocity per change in time (ms −2 ), g is the gravitational acceleration constant (9.81 ms −2 ), θ is a slope angle, A , B and C are constants, and v is tram's velocity (km/h) [14, 24].…”

Section: Tram and Battery Modelsmentioning

confidence: 99%

Enhancing conventional battery and contact line hybrid tram system with accelerating contact lines

Mwambeleko

Hayasaka

Kulworawanichpong

2020

IET Electrical Systems in Transportation

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Urban passenger mobility challenges can be sustainably eased with electric trains. However, due to the visual impact, safety and, electrification cost concerns, some routes or section(s) of a route are not electrified. In such cases, battery powered trams present a promising alternative. Rail vehicles are heavy but, they have a low coefficient of rolling friction. Consequently, they draw high power during acceleration as compared to the power demand during cruising. Thus, a high capacity high-voltage traction battery is required to provide accelerating power. To minimise total electrified distance and traction battery size, a battery and accelerating-contact line (BACL) hybrid tram system in which a tram accelerates from a station drawing power from a short contact line and cruises with traction battery is presented. Simulated in MATLAB, the BACL hybrid tram system with 1.8 km total electrified distance has equivalent performance to the conventional battery and contact line hybrid tram system with 12.2 km total electrified distance. Compared to independently battery powered tram, battery size is reduced by 62.5%. Suggested applications for the BACL tram system are on short, fairly flat, idle lines with few stops.

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“…In (1), the first term accounts for acceleration resistance, the second term accounts for gradient resistance, and rest account for friction and drag resistance

T_{E} = \overset{false^}{m} \frac{normalΔ v}{normalΔ t} + m g \sin θ + A + B v + C v^{2}

where

\overset{false^}{m}

and m are tram effective and normal masses given as

\overset{false^}{m} = m_{tare} false(1 + λ false) + m_{load}

and

m = m_{tare} + m_{load}

normalΔ v / normalΔ t

Section: Tram and Battery Modelsmentioning

confidence: 99%

Enhancing conventional battery and contact line hybrid tram system with accelerating contact lines

Mwambeleko

Hayasaka

Kulworawanichpong

2020

IET Electrical Systems in Transportation

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Battery electric multiple units to replace diesel commuter trains serving short and idle routes

Mwambeleko

Kulworawanichpong

2017

Journal of Energy Storage

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Comparison of different tram cars in Poland basing on drive type, rated power and energy consumption

Kulesz

Sikora

2018

MATEC Web Conf.

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Paper deals with tram rolling stock used in Poland nowadays -overview of car types in operation is given. The detailed calculations of energy consumption by a given tram car running over a given route depend in particular on the work carried out (each route is characterized by, among other factors, its profile, length, number of turns, turn radii, number of stops -scheduled or otherwise, number of transferred passengers, number of brakings with possibility of energy recuperation). Results of energy consumption measurements for different car types in Warsaw are provided and analysed.

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The calculation of train performance

Cited by 6 publications

References 0 publications

Enhancing conventional battery and contact line hybrid tram system with accelerating contact lines

Enhancing conventional battery and contact line hybrid tram system with accelerating contact lines

Battery electric multiple units to replace diesel commuter trains serving short and idle routes

Comparison of different tram cars in Poland basing on drive type, rated power and energy consumption

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