Measurement and Analysis of Transmission Losses in the Supply System of Electrified Transport

Bartłomiejczyk, Mikołaj; Hołyszko, Piotr; Filipek, P.

doi:10.12911/22998993/65447

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…The increase of delivered power, resulting from installing the charger, would additionally increase these losses, which should be taken into account when settling with the charging system operator. The calculations of losses presented in this section were made using a method presented in [22], based on data from on-board trolleybus recorders.…”

Section: Criterion Iii: Acceptable Power Transmission Lossesmentioning

confidence: 99%

Application of Traction Supply System for Charging Electric Cars

2022

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The development of electromobility involves the development of electric cars charging infrastructure. The increase of the number of chargers poses new demands for the AC power grid, especially in regard to its capacity of delivering high peak power. As an alternative for the public AC power grid, urban electrified transportation systems (trams, trolleybuses, and metro) can be used for supplying electric cars chargers. The article discusses four options of integrating electric cars chargers with a traction power supply system. The option of connecting the charger to the traction overhead supply line has been selected due to the spatial availability of the power source and possibility to use regenerative braking energy for charging. A set of criteria has been developed for analysing the capability of the traction supply system to feed electric cars chargers. An exemplary feasibility analysis was carried out for trolleybus traction supply system in Gdynia, Poland. The impact of installing the charging station on specific traction supply parameters has been predicted using present-state recordings of electrical parameters and assumed charging station power. The study shows that every supply section of the considered trolleybus traction system has the capability of installing a fast-charging station, which provides opportunities of expanding the charging stations network in Gdynia.

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Section: Criterion Iii: Acceptable Power Transmission Lossesmentioning

confidence: 99%

Application of Traction Supply System for Charging Electric Cars

2022

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“…When a trolleybus is running in contact with catenary wires, all its components are supplied from the overhead contact line. Because the network has to be broken into sections and includes switches, crossings and exits, the trolleybus loses power when running through dead zones for as long as 3 s or more [20].…”

Section: Trolleybus Overhead Power Supply Networkmentioning

confidence: 99%

Ensuring the Continuity of Power Supply to the On-Board Auxiliary Devices of the Trolleybus through the Recuperation of Kinetic Energy

et al. 2021

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When a trolleybus travels through insulated sections of the overhead contact line, it experiences momentary power interruptions, which adversely affect the vehicle’s on-board auxiliary subassemblies. To reduce these negative effects, one can harness energy recovered via regenerative braking. A model power supply circuit diagram for structural systems of the trolleybus is proposed. Simulation tests were carried out to develop a method for analyzing power supply to trolleybus auxiliary devices and verify it in a real-life example. The results allow determination of the limit power that can be generated by the trolleybus drive system to feed auxiliary devices during interruptions in power supply from the overhead contact line. The possibility of powering the on-board auxiliary equipment of a trolleybus using energy from recuperation with a traction motor is presented.

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