Simulation of On-Board Supercapacitor Energy Storage System for Tatra T3A Type Tramcars

Latkovskis, Leonards; Bražis, Viesturs; Grigāns, Linards

doi:10.5772/7669

Cited by 10 publications

(7 citation statements)

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“…The onboard type ESSs can absorb one train's braking energy and decrease the transmission loss during the process of energy flow. There are many applications with ESSs onboard in the trams [12,13]. While installed, ESSs will increase the weight of vehicles.…”

Section: Introductionmentioning

confidence: 99%

Control Strategies with Dynamic Threshold Adjustment for Supercapacitor Energy Storage System Considering the Train and Substation Characteristics in Urban Rail Transit

Lin

Zhao

et al. 2016

Energies

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Recuperation of braking energy offers great potential for reducing energy consumption in urban rail transit systems. The present paper develops a new control strategy with variable threshold for wayside energy storage systems (ESSs), which uses the supercapacitor as the energy storage device. First, the paper analyzes the braking curve of the train and the V-I characteristics of the substation. Then, the current-voltage dual-loop control method is used for ESSs. Next, in order to achieve the best energy-saving effect, the paper discusses the selection principle of the charge and discharge threshold. This paper proposes a control strategy for wayside supercapacitors integrated with dynamic threshold adjustment control on the basis of avoiding the onboard braking chopper's operation. The proposed control strategy is very useful for obtaining good performance, while not wasting any energy in the braking resistor. Therefore, the control strategy has been verified through simulations, and experimental tests, have been implemented on the Batong Line of Beijing subway using the 200 kW wayside supercapacitor energy storage prototype. The experimental results show that the proposed control is capable of saving energy and considerably reducing energy consumption in the braking resistor during train braking.

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Section: Introductionmentioning

confidence: 99%

Control Strategies with Dynamic Threshold Adjustment for Supercapacitor Energy Storage System Considering the Train and Substation Characteristics in Urban Rail Transit

Lin

Zhao

et al. 2016

Energies

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“…The advantage of simulation software coupling is the possibility to use a brand-new continuous mode model of the PSIM-based ESS buck-and-boost converter [8] instead of the pulse model, developed to simplify and accelerate the simulation of ESS PWM converter [9]. The trolleybus ESS control system uses the well-approved supercapacitor charging algorithm [7,9] with constant voltage V f .…”

Section: Computer Model Of a Traction Ac Drive With Essmentioning

confidence: 99%

“…The switching mode buck-and-boost models of the ESS power converter are replaced with continuous ones [8] [7,9]. The second order low-pass filter LP2 with 700Hz cut-off frequency reduces ripple in the voltage control loop.…”

Section: Ess Modelmentioning

confidence: 99%

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Simulation of Trolleybus Traction Induction Drive with Supercapacitor Energy Storage System

Bražis¹,

Latkovskis²,

Grigāns³

2010

Latvian Journal of Physics and Technical Sciences

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The article considers the possibilities of saving the regenerative braking energy in Škoda 24Tr type trolleybuses by installing the onboard supercapacitor energy storage system (ESS) and improving its performance with automated switching to the autonomous traction mode. Proposed is an ESS control system with constant DC bus voltage in the supercapacitor charging mode and supercapacitor current proportional to the AC drive current in the discharging mode. The authors investigate stability of the trolleybus ESS control system operating together with AC traction drive in various overhead voltage failure modes. The co-simulation of ESS operation was done by Matlab/Simulink AC drive and PSIM ESS continuous models.

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“…Examples of such controllers are described in [1,2]. Their performance in the braking phase of a vehicle is based on the ESS input voltage control instead of the SC current control.…”

Section: Introductionmentioning

confidence: 99%

On-Board Supercapacitor Energy Storage: Sizing Considerations

Latkovskis¹,

Sirmelis²,

Grigāns³

2012

Latvian Journal of Physics and Technical Sciences

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The paper considers the problem of choosing the optimum size for on-board energy storage system (ESS) based on supercapacitors (SCs) taking into account both the braking energy and the braking power of an electrical vehicle. The authors have derived equations for calculation of the minimum SC number in the bank and the optimum depth of its discharge. The theory is exemplified by the Škoda 24Tr trolleybus. Besides, by simulation of the ESS mathematical model, the dependence of the saved braking energy vs. SC number at the optimum discharge depth has been studied. The research shows that a reduced number of SCs may be used as compromise solution between the ESS efficiency and its cost. It was found that in most cases the optimum discharge depth is much higher than 0.5 − the value recommended by SC manufacturers and often met in literature.

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Simulation of On-Board Supercapacitor Energy Storage System for Tatra T3A Type Tramcars

Cited by 10 publications

References 0 publications

Control Strategies with Dynamic Threshold Adjustment for Supercapacitor Energy Storage System Considering the Train and Substation Characteristics in Urban Rail Transit

Control Strategies with Dynamic Threshold Adjustment for Supercapacitor Energy Storage System Considering the Train and Substation Characteristics in Urban Rail Transit

Simulation of Trolleybus Traction Induction Drive with Supercapacitor Energy Storage System

On-Board Supercapacitor Energy Storage: Sizing Considerations

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