An effective utilization scheme for regenerative braking energy based on power regulation with a genetic algorithm

Cheng, Chuntian; Wang, Yanwen; Lu, Qijing; Peng, Jingjing; Liu, Xianghong; Chen, Yang; He, Bangbang

doi:10.1049/pel2.12312

Cited by 7 publications

(3 citation statements)

References 54 publications

(103 reference statements)

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“…In addition, the RPC integrated with an ESS situated in a TSS is also proposed for storing RB energy, and various implementation strategies are suggested [26][27][28][29][30][31]. To improve the RB energy utilisation rate, power converters are used between adjacent power sections in TSSs and section posts [32][33][34]. However, it needs many power converters in both TSSs and section posts, which increases the economic cost of the actual application.…”

Section: Introductionmentioning

confidence: 99%

Utilisation of regenerative braking energy in adjacent power sections of railway systems

Wu,

2023

IET Electric Power Appl

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Huge regenerative braking (RB) energy is generated in the AC traction power supply system (TPSS) which is related to safe operation and comprehensive energy utilisation. For the RB energy utilisation, the authors propose a railway regenerative braking power conditioner (RBPC) with no energy storage system (ESS) integrated which is located at the end of the power sections between adjacent traction substations (TSSs). First, the RB characteristics are studied based on a large amount of measured data, and the load power states are classified according to the load powers of adjacent power sections. Then, the RB energy utilisation scheme, transferring the RB power to the adjacent power section where traction power exists, has been studied. Moreover, a dual closed‐loop control strategy for a back‐to‐back converter is adopted to achieve RB energy utilisation. Finally, a case study and an engineering application are carried out. The results have verified the feasibility of this method, which can illustrate that more than half of the RB energy can be mutually utilised in adjacent power sections.

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Section: Introductionmentioning

confidence: 99%

Utilisation of regenerative braking energy in adjacent power sections of railway systems

Wu,

2023

IET Electric Power Appl

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“…RPC has the advantage of load shifting and flexibility [21,22]. For AC railways, energy storage solutions based on the RPC [23,24] can improve the power quality while utilizing regenerative braking energy. It has therefore received considerable attention.…”

Section: Introductionmentioning

confidence: 99%

Research on the Energy Management Strategy of a Hybrid Energy Storage Type Railway Power Conditioner System

et al. 2023

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High-speed railways generate a large amount of regenerative braking energy during operation but this energy is not utilized efficiently. In order to realize the recycling of regenerative braking energy of high-speed railways, the hybrid energy storage type railway power conditioner (RPC) system is proposed. The working principle and the control strategy of the system are studied. The energy management strategy consisting of a hybrid energy storage system charging and discharging strategy and variational modal decomposition (VMD) power allocation strategy is proposed. Three system operation modes are proposed: the power of the hybrid energy storage system is decomposed by VMD and an interrelationship number is proposed to determine the lithium battery and supercapacitor power. The hardware-in-the-loop test experiments are conducted by the StarSim power electronics small-step real-time simulator from Modeling Tech and the validation analysis is carried out on MATLAB/Simulink with the actual measurement data of a traction substation on the Lanzhou–Xinjiang line. The results verify that the proposed strategy can effectively recycle the regenerative braking energy, realize the peak-shaving effect on the load, and reduce the energy consumption of the train.

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“…The result is a reduction in THD of up to 92% and a reduction in negative sequence current of almost 98%. Using the genetic algorithm in [11], the minimum of the total energy losses in the network is sought together with the minimum of the energy extracted from the feeder substations. It is shown that it is possible to use up to 93.3% of the available regenerative braking energy.…”

Section: Introductionmentioning

confidence: 99%

An Energy Flow Control Algorithm of Regenerative Braking for Trams Based on Pontryagin’s Minimum Principle

Župan,

Šunde,

Ban

et al. 2023

Energies

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Energy savings in electric rail transport are important in order to increase energy efficiency and reduce its carbon footprint. This can be achieved by storing and using the energy generated during regenerative braking. The system described in this paper consists of a supercapacitor energy storage system (SC ESS), a bidirectional DC/DC converter, and an algorithm to control the energy flow. The proper design of the algorithm is critical for maximizing energy savings and stabilizing the power grid, and it affects the lifetime of the SC ESS. This paper presents an energy flow control algorithm based on Pontryagin’s minimum principle that balances maximum energy savings with maximum SC ESS lifetime. The algorithm also performs SC ESS recharging while the rail vehicle stops on inclines to reduce the impact of its next acceleration on the power grid. To validate the algorithm, offline simulations are performed using real tram speed measurements. The results are then verified with a real-time laboratory emulation setup with HIL simulation. The tram and power grid are emulated with LiFePO4 batteries, while the SC ESS is emulated with a supercapacitor. The proposed algorithm controls a three-phase converter that enables energy exchange between the batteries and the supercapacitor. The results show that the proposed algorithm is feasible in real time and that it can be used under real operating conditions.

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An effective utilization scheme for regenerative braking energy based on power regulation with a genetic algorithm

Cited by 7 publications

References 54 publications

Utilisation of regenerative braking energy in adjacent power sections of railway systems

Utilisation of regenerative braking energy in adjacent power sections of railway systems

Research on the Energy Management Strategy of a Hybrid Energy Storage Type Railway Power Conditioner System

An Energy Flow Control Algorithm of Regenerative Braking for Trams Based on Pontryagin’s Minimum Principle

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