Direct connection of SC battery to traction substation

Sirmelis, Uģis

doi:10.1109/rtucon.2015.7343126

Cited by 7 publications

(5 citation statements)

References 14 publications

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“…A given time-variant profile is assigned to the trolleybus position and current, which are set as inputs to the catenary model. The negligibility of reactive circuit components has been confirmed in the literature [9,[11][12][13][14][15]. A referenced subsystem adapts itself to the context of the parent model, which in our case includes a 20-m span of the overhead bifilar line.…”

Section: Modular Catenary Modelingmentioning

confidence: 53%

“…A given timevariant profile is assigned to the trolleybus position and current, which are set as inputs to the catenary model. The negligibility of reactive circuit components has been confirmed in the literature [9,[11][12][13][14][15]. The circuit structure is built with an "H" configuration, where half-span resistors (having a resistance Rhs) are arranged symmetrically with respect to the central current source [25].…”

Section: Modular Catenary Modelingmentioning

confidence: 90%

“…The second technique introduces switchable series-connected resistors for imitating variable resistors [13,14]. The resistor network is included in a subsystem handled by a designated control logic.…”

Section: Variable Resistor-based Catenary Modeling Using Simulinkmentioning

confidence: 99%

“…Simulink provides a block implementing a variable resistor (Variable Resistor blocks) as a current source driven by a voltage measurement. However, this model presents strong criticalities, as the vehicle current absorption is typically modeled with a controlled current generator [11][12][13][14]. Hence, its direct connection with Variable Resistor blocks would form a current-sources-only cut-set, which originates singularities according to the circuit theory.…”

Section: Introductionmentioning

confidence: 99%

“…A possible solution is explained in [12], in which the variable resistor is built with a controlled voltage source. The authors in [13,14] developed a catenary model based on switchable series-connected resistors for imitating variable resistors. In [15], the same concept was applied to trolleybus lines, which are topologically more intricate than railway lines, even though the respective vehicle model includes the nonlinearities of the electric drive system, which may lead to excessively burdensome simulations.…”

Section: Introductionmentioning

confidence: 99%

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Novel Multi-Vehicle Motion-Based Model of Trolleybus Grids towards Smarter Urban Mobility

et al. 2022

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Trolleybus systems are resurfacing as a steppingstone to carbon-neutral urban transport. With an eye on smart city evolution, the study and simulation of a proper monitoring system for trolleybus infrastructures will be essential. This paper merges the authors’ engineering knowledge and sources available in the literature on designing and modeling catenary-based electric traction networks and performs a critical review of them to lay the foundations for proposing possible optimal alternatives. A novel multi-vehicle motion-based model of the DC catenary system is then devised and simulated in Matlab-Simulink, which could prove useful in predicting possible technical obstacles arising from the next-future introduction of smart electric traction grids, inevitably featuring greater morphological intricacy. The modularity property characterizing the created model allows an accurate, detailed, and flexible simulation of sophisticated catenary systems. By means of graphical and numerical results illustrating the behavior of the main electrical line parameters, the presented approach demonstrates today’s obsolescence of conventional design methods used so far. The trolleybus network of the city of Bologna was chosen as a case study.

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Section: Modular Catenary Modelingmentioning

confidence: 53%

Section: Modular Catenary Modelingmentioning

confidence: 90%

Section: Variable Resistor-based Catenary Modeling Using Simulinkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Novel Multi-Vehicle Motion-Based Model of Trolleybus Grids towards Smarter Urban Mobility

et al. 2022

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Development of a High-Precision and Flexible Model for Accurate Simulation of Trolleybus Grids

et al. 2023

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The reduction of climate-changing emissions is vital, particularly in urban areas. To achieve this goal, the decarbonization of the transport sector is decisive. Trolleybus systems represent a solution towards sustainability as long as the integration of the electrical infrastructure with renewable sources as well as the introduction of full-electric fleets are actualized. To ensure a smart electrical transition the circuit modelling phase is crucial and must enable the most accurate simulations possible. The modularity of the catenary model and a versatile graphical user interface, which allows extensive topological change flexibility, distinguish the novel trolleybus network simulator presented in this study. The model completes the gaps left by earlier block-based simulation tools with its high precision and low processing effort. The suggested model's enhancement in precision is evidenced by a graphical study of the voltage distribution examined in a section of Bologna's trolleybus grid. Finally, albeit non-iterative and thus computationally even cheaper, the proposed model is applicable for the simulation of more complex realistic scenarios involving the non-linearity of the equivalent power grid. The article will show satisfactory results on the convergence of the simulator.INDEX TERMS Catenary model, circuit modelling, electric mobility, motion-based model, smart DC grid, trolleybus, two-port network, urban transport.

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Trolleybus motion simulation by dealing with overhead DC network energy transmission losses

Staņa

Bražis

2017

2017 18th International Scientific Conference on Electric Power Engineering (EPE)

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Direct connection of SC battery to traction substation

Cited by 7 publications

References 14 publications

Novel Multi-Vehicle Motion-Based Model of Trolleybus Grids towards Smarter Urban Mobility

Novel Multi-Vehicle Motion-Based Model of Trolleybus Grids towards Smarter Urban Mobility

Development of a High-Precision and Flexible Model for Accurate Simulation of Trolleybus Grids

Trolleybus motion simulation by dealing with overhead DC network energy transmission losses

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