Energies 2019, 12, 4053 2 of 24 The installation of equipment that provide clean energy from renewable sources (e.g., solar panels and wind generators) to feed the traction loads in rail may have a significant impact in the energy costs and CO2 emissions of a railway system, increasing the environment friendliness of the railway [4–6]. ...
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Energy storage units will be considered for all-electric ranges of 10, 20, 30, 40, 50, and 60 miles. The acceleration performance of all the vehicles will be the same (0–60 mph in 8–9 s). For the batteries, the useable depth of …
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Nowadays, nations are moving toward the electrification of the transportation section, and the widespread development of EV charging stations and their infrastructures supplied by the grid would strain the power grid and lead to overload issues in the network. To address this challenge, this paper presents a method for utilizing the …
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With the modern advances in capacitor technology, more specifically supercapacitors, it is now possible to convert and store a portion of kinetic energy as electrical energy. This way, driving a car downhill and using regenerative braking actually recharges the battery, and increases the efficiency of the vehicle.
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/ Multi-agent deep reinforcement learning-based multi-time scale energy management of urban rail traction networks with distributed photovoltaic–regenerative braking hybrid …
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Although pure electric vehicles have prominent advantages in environmental protection and motor technology has become more and more perfect, the competitive disadvantage of pure electric vehicles still lies in their lack of endurance. For lack of pure electric vehicle battery life of this problem, this paper analyzes the basic theory of pure electric vehicle braking …
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1362 ISSN: 2088-8708 Int J Elec & Comp Eng, Vol. 12, No. 2, April 2022: 1358-1367 loop. The inner loop controls iL - the inductor current in order to controlling charge or discharge process of
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An overview of fundamentals. Even though the goal of an RBS is to recuperate as much kinetic energy as possible during braking processes, it is also crucial for the system to decelerate the vehicle safely and comfortably. Brake safety and stability are major criteria in evaluating RBSs [18], [19], [20]. In fact, governmental regulations have ...
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Energy-Storage-Based Smart Electrical Infrastructure and Regenerative Braking Energy Management in AC-Fed Railways with Neutral Zones. by. Zhixuan Gao., …
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This paper deals with design and simulation of a hybrid electrical energy storage (HEES) for Esfahan urban railway under regenerative braking condition. The HEES presented in this paper, is comprised of battery and supercapacitor. The capacity of the supercapacitor and battery is calculated based on regenerative braking energy from …
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The paper presents a regenerative braking energy recovery system based on super-capacitor energy storage system. When electric trains operate in accelerating or braking regimes, the voltage of DC bus will fluctuatesharply to compare …
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In order to absorb the regenerative braking energy of trains, supercapacitor energy storage systems (ESS) are widely used in subways. Although wayside ESS are widely used, because of the influence of no-load voltage, and so on, a wayside ESS cannot absorb all the regenerative braking energy in some special cases, …
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Regenerative braking helps in extending the range of the electric vehicle by 8-25%. Apart from saving energy and enhancing the range, it also helps in effective control of the braking operation. In the …
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Energy storage is the capture of energy produced at one time for use at a later time [1] to reduce imbalances between energy demand and energy production. A device that stores energy is generally called an accumulator or battery. Energy comes in multiple forms including radiation, chemical, gravitational potential, electrical potential ...
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Introduction. Electrical energy storage systems (EESS) for electrical installations are becoming more prevalent. EESS provide storage of electrical energy so that it can be used later. The approach is not new: EESS in the form of battery-backed uninterruptible power supplies (UPS) have been used for many years.
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With the continuous increase of electric multiple unit (EMU) train service life, the train will be out of operation, but there are still some parts on the train can work normally. When EMU trains operate in regenerative braking state, a large amount of energy will be returned to the traction grid. In this paper, the decommissioned train equipment is …
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The problem of optimally sizing hybrid energy storage systems (HESS) installed in electric railway systems, considering the effect of regenerative braking is studied in this paper. HESSs combine traditional batteries and newly developed ultracapacitors, taking advantage of the high energy capacity of batteries and of the …
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As an important part of RBS, the charging capacity and life cycle of the energy-storage unit play an essential role in the secondary utilization of braking energy. The battery offers a promising prospect for energy storage in EVs because of its high …
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Regenerative braking systems aim to recover, store and reuse some of the vehicle''s braking energy to improve fuel efficiency or boost the range of electric and hybrid vehicles (FEV/HEV). Energy storage media include electric batteries and/or ultracapacitors, flywheels and hydraulic accumulators.
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Fourth, Work flow of electric energy storage braking energy recovery system. (1) At the start, the sensor detects the throttle signal and the speed change signal, at which point the battery releases electrical energy to help the vehicle get off. While the vehicle engine is running, the energy regeneration system also generates energy to boost ...
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In electric rail transport, an increase in energy efficiency is also achieved by using energy through regenerative braking [1,2]. Savings through the use of energy generated by regenerative ...
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This paper proposes an evaluation strategy of regenerative braking energy for electric vehicle powered by supercapacitors. •. The maximum efficiency of braking energy can be up to 88%. •. The braking energy recovery efficiency of electric vehicles is greatly enhanced by supercapacitors. •.
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This paper proposes a novel hybrid energy storage system (HESS) for the regenerative braking system (RBS) of the front-wheel induction motor-driven battery …
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2 · Energy storage at renewables plants operated just 2.18 hours a day last year, while independent facilities operated only 2.61 hours per day, according to the China Electricity Council.
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In conventional EVs or HEVs, recuperation energy is stored in the high voltage battery. The electric motor of the vehicle operates as a generator and obtained energy is transferred to the battery of the vehicle. In Fig. 1, the general energy flow topology of the EV is given. ...
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Energies 2023, 16, 5117 3 of 24 Simulation results based on 24 h profile considering a single train movement together with breaking and acceleration events are provided to verify the above-mentioned goals. Therein, the size of the HESS is fixed, and the EV
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Electricity cannot itself be stored on any scale, but it can be converted to other forms of energy which can be stored and later reconverted to electricity on demand, reducing imbalances between energy demand and production. Energy, however, comes in multiple forms including radiation, chemical potential, gravitational potential, electrical ...
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The Long-Duration Energy Storage (LDES) portfolio will validate new energy storage technologies and enhance the capabilities of customers and communities to integrate grid storage more effectively. DOE defines LDES as storage systems capable of delivering electricity for 10 or more hours in duration. Learn more.
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The main aim of this project is to develop a hybrid energy storage system employing regenerative braking and vibration-powered energy for a hybrid electric vehicle. A system has been designed involving improved regenerative braking using fuzzy logic controller and vibration powered energy harvester by piezoelectric ceramic plates. The system …
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Abstract: The main aim of this project is to develop a hybrid energy storage system employing regenerative braking and vibration-powered energy for a hybrid electric …
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The adoption of electric vehicles promises numerous benefits for modern society. At the same time, there remain significant hurdles to their wide distribution, primarily related to battery-based …
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This paper proposes an energy storage system (ESS) for recycling the regenerative braking energy in the high-speed railway. In this case, a supercapacitor-based storage system is integrated at the DC bus of the back to back converter that is connected to the two power phases of the traction power system (TPS). In order to …
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Innovations in electric vehicle technology have led to a need for maximum energy storage in the energy source to provide some extra kilometers. The size of electric vehicles limits the size of the batteries, thus limiting the amount of energy that can be stored. Range anxiety amongst the crowd prevents the entire population from shifting to a …
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Efficient regenerative braking of electric vehicles (EVs) can enhance the efficiency of an energy storage system (ESS) and reduce the system cost. To ensure swift braking energy recovery, it is paramount to know the upper limit of the regenerative energy during braking. Therefore, this paper, based on 14 typical urban driving cycles, proposes …
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Electric vehicles (EVs), which are environmentally friendly, have been used to minimize the global warming caused by fossil fuels used in vehicles and increasing fuel prices due to the decrease in fossil resources. Considering that the energy used in EVs is obtained from fossil resources, it is also important to store and use energy efficiently in …
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In deeply decarbonized energy systems utilizing high penetrations of variable renewable energy (VRE), energy storage is needed to keep the lights on and the electricity flowing when the sun isn''t shining and the wind isn''t blowing — when generation from these VRE ...
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