Energy-efficient three-phase bidirectional converter for grid-connected storage applications

Colmenar‐Santos, Antonio; Linares-Mena, Ana-Rosa; Velázquez, Jesús Fernández; Borge-Díez, David

doi:10.1016/j.enconman.2016.09.047

Cited by 23 publications

(3 citation statements)

References 40 publications

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“…The difference is that direct power control is adopted in the grid-connected strategy of energy storage. The reference values of dq axis component of grid-connected current U gd_ref and U gq_ref are calculated by active power and reactive power [9] . Both DFIG and PMSG wind turbine need variable pitch control and maximum power tracking control.…”

Section: Grid Connection Strategy Of Distributed Generationmentioning

confidence: 99%

Study on safety operation of medium voltage distribution network

Chen

Lian

Wang³

et al. 2021

E3S Web Conf.

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Aiming at the problem of safe operation in the medium voltage distribution network with neutral point grounding through small resistance, the distribution network model was built, and on this basis, MW-level photovoltaic (PV) system, doubly fed Induction generator (DFIG) wind turbine, permanent magnet synchronous generator (PMSG) wind turbine and energy storage device was connected respectively in this paper. The ground current and earth potential rise was studied when the power was delivered by mistake. The simulation results show that in the system with neutral point grounding through small resistance, whether it is the traditional or the active distribution network, the three-phase power delivery method is more able to ensure the personal safety of power grid operators. However, The access to distributed generator (DG) in the distribution network will have a greater impact on ground current and earth potential rise in the case of three-phase power delivery. Especially when the ground current and earth potential rise will increase after DG connected to distribution network, which is still likely to pose a threat to personal safety and needs further research.

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Section: Grid Connection Strategy Of Distributed Generationmentioning

confidence: 99%

Study on safety operation of medium voltage distribution network

Chen

Lian

Wang³

et al. 2021

E3S Web Conf.

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“…With the increasing demand of renewable energy, one of the mature technologies for large-scale energy storage is pumped-storage power stations [1,2]. The vigorous development of pumped-storage power plants can provide sufficient storage for energies generated by both the wind and the sun.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Internal Flow Characteristics of a Startup Pump Turbine at the Lowest Head under No-Load Conditions

Wang

Wang²,

Wang

et al. 2021

JMSE

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The instability of the no-load working condition of the pump turbine directly affects the grid connection of the unit, and will cause vibration and damage to the components of the unit in severe cases. In this paper, a three-dimensional full flow numerical model including the runner gap and the pressure-balance pipe was established. The method SST k-ω model was used to predict the internal flow characteristics of the pump turbine. The pressure pulsation of the runner under different operating conditions during the no-load process was compared. Because the rotation speed, flow rate, and guide vane opening of the unit change in a small range during the no-load process, the pressure pulsation characteristics of the runner are basically the same. Therefore, a working condition was selected to analyze the transient characteristics of the flow field, and it was found that there was a high-speed ring in the vaneless zone, and a stable channel vortex was generated in the runner flow passage. Analyzing the axial water thrust of each part of the runner, it was found that the axial water thrust of the runner gap was much larger than the axial water thrust of the runner blades, and it changed with time periodically. It was affected by rotor stator interaction. The main frequency was expressed as a multiple of the number of guide vanes, that is, vanes passing frequency, 22fn. During the entire no-load process, the axial water thrust of the runner changed slowly with time and fluctuated slightly.

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“…Main characteristics of a SMES system[4,19,24,28,[36][37][38][39][40][41][42][43][44][45][46][47][48][49].…”

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confidence: 99%

Analysis on the Electric Vehicle with a Hybrid Storage System and the Use of Superconducting Magnetic Energy Storage (SMES)

Molina-Ibáñez

Colmenar‐Santos

Rosales-Asensio

2023

SpringerBriefs in Energy

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Given the current load and power density limitations in electric vehicle (EV) storage systems, it is necessary to study hybrid and control systems in order to optimize their performance and present themselves as a real alternative to internal combustion engine (ICE) vehicles. This implies the development of legislation and specific regulations that enable the research and development of these storage and management systems for hybrid systems. The research presented here aims to analyze the implementation of the SMES (Superconducting Magnetic Energy Storage) energy storage system for the future of electric vehicles. To do this, the need for a hybrid storage system has been taken into account, with several regulatory options, such as the reduction of rates or the promotion of private investments, which allow the technological development of EVs. What is sought is to achieve the market share proposed by the different countries to reduce Greenhouse Gases (GHG), according to their objectives. This approach must be taken from the legislative and regulatory perspective, specific to EVs and charging points, of several countries or regions with different cultures, management models and implementation potential, such as the United States of America (USA), Europe and China. This analysis is associated with the economic study of costs that this storage system may involve in the implementation of EVs to replace ICE vehicles, resulting in possible economic benefits as well as the environmental benefits of the use of EVs. In this analysis, the current high cost of using a hybrid system of these characteristics can be observed with the comparison of three EVs, as well as current data on GHG emissions produced by transport. All this leads to a series of advantages and disadvantages that must be taken into account in order to achieve the objectives that countries have in the coming decades of EV diffusion. c

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Energy-efficient three-phase bidirectional converter for grid-connected storage applications

Cited by 23 publications

References 40 publications

Study on safety operation of medium voltage distribution network

Study on safety operation of medium voltage distribution network

Analysis of Internal Flow Characteristics of a Startup Pump Turbine at the Lowest Head under No-Load Conditions

Analysis on the Electric Vehicle with a Hybrid Storage System and the Use of Superconducting Magnetic Energy Storage (SMES)

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