A two-level coordinated voltage control scheme of electric vehicle chargers in low-voltage distribution networks

Wang, Yu; John, Thomas; Xiong, Binyu

doi:10.1016/j.epsr.2018.12.005

Cited by 35 publications

(18 citation statements)

References 31 publications

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Section: Reactive Power Support Voltage Regulation With Reactive Powe...mentioning

confidence: 99%

“…Reactive power compensation by EVs has been considered for voltage control in [5,8,45,75,101,103,104,[107][108][109][110]. In [5], a two-level coordinated voltage control method that is applied by the EV charger (EVC) is proposed to regulate the voltage in low-voltage distribution networks. At the higher level, the voltage is adjusted by measuring the voltage of the critical bus, and the control signals are transmitted between all EVCs.…”

Section: Reactive Power Support Voltage Regulation With Reactive Powe...mentioning

confidence: 99%

“…Coordination of charging and discharging minimizes the detrimental impact of EVs on the grid and may help to increase the system's efficiency in various ways. EVs can be used to provide several services to power systems, such as frequency control [4], voltage control [5], peak load management [6], load profile valley filling [7], and reducing power losses in the system [8], by considering them as distributed storage sources and using their vehicle-to-grid (V2G) capacity. In addition to earning revenue, EVs can effectively promote the use of renewable energy sources in the power grid by charging during off-peak periods when the renewable energy output is high and discharging during peak hours [9].…”

Section: Introductionmentioning

confidence: 99%

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Charging and Discharging of Electric Vehicles in Power Systems: An Updated and Detailed Review of Methods, Control Structures, Objectives, and Optimization Methodologies

et al. 2022

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As a result of fossil fuel prices and the associated environmental issues, electric vehicles (EVs) have become a substitute for fossil-fueled vehicles. Their use is expected to grow significantly in a short period of time. However, the widespread use of EVs and their large-scale integration into the power system will pose numerous operational and technical challenges. To avoid these issues, it is essential to manage the charging and discharging of EVs. EVs may also be considered sources of dispersed energy storage and used to increase the network’s operation and efficiency with reasonable charge and discharge management. This paper aims to provide a comprehensive and updated review of control structures of EVs in charging stations, objectives of EV management in power systems, and optimization methodologies for charge and discharge management of EVs in energy systems. The goals that can be accomplished with efficient charge and discharge management of EVs are divided into three groups in this paper (network activity, economic, and environmental goals) and analyzed in detail. Additionally, the biggest obstacles that EVs face when participating in vehicle-to-grid (V2G) applications are examined in this paper.

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Section: Reactive Power Support Voltage Regulation With Reactive Powe...mentioning

confidence: 99%

Section: Reactive Power Support Voltage Regulation With Reactive Powe...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Charging and Discharging of Electric Vehicles in Power Systems: An Updated and Detailed Review of Methods, Control Structures, Objectives, and Optimization Methodologies

et al. 2022

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“…To provide a solution for charging problems, surplus literature is presented [8,[12][13][14][15][16][17]. The single-stage off-board EV charger consists of a three-phase AC-DC converter.…”

Section: Introductionmentioning

confidence: 99%

“…The system reliability maybe further strengthened with the enormous numbers of EVs connected to the electrical network, where they can be controlled to supply or absorb active as well as reactive power if required. With the energy storage capacity, EV acts as the distribution energy storage with the ability to act as a source or sink during grid‐to‐vehicle (G2V) and vehicle‐to‐grid (V2G) operating modes, respectively, and also compensate reactive power [16, 17]. Therefore, the smart and coordinated control EV charging infrastructure may enhance the system reliability.…”

Section: Introductionmentioning

confidence: 99%

Resonant controller of single‐stage off‐board EV charger in G2V and V2G modes

Seth

Singh

2020

IET Power Electronics

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This study presents the control design and implementation of a three-phase single-stage off-board electric vehicle (EV) charger. The charger is controlled to perform four quadrants operation in active-reactive (P-Q) power plane. Generally, the control of the EV charger consists of two control loops, i.e. exterior (slow) loop and fast-acting interior loop. Since the signals to be regulated in outer loop are DC in nature, they can be easily handled by regular proportional plus integral regulators. The inner loop control may also be performed in the DC domain, but inaccuracy involved in determining the parameter-dependent decoupling terms and difficulty in setting the gain for fast-acting inner loops make it unfavourable. Therefore, the inner control is performed in AC domain, where the signals are periodic. The proportional plus resonant controller is found to be very useful in tracking such type of periodic signals of fixed frequency, and accordingly, it has been designed and successfully implemented for the proposed work. The proposed methodology has been tested for eight different modes in the P-Q-plane. The system is simulated in MATLAB/Simulink environment and implemented in real time with a scaled-down hardware prototype.

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On Control of Energy Storage Systems in Microgrids

Wang

Fang

2021

Power Systems

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A two-level coordinated voltage control scheme of electric vehicle chargers in low-voltage distribution networks

Cited by 35 publications

References 31 publications

Charging and Discharging of Electric Vehicles in Power Systems: An Updated and Detailed Review of Methods, Control Structures, Objectives, and Optimization Methodologies

Charging and Discharging of Electric Vehicles in Power Systems: An Updated and Detailed Review of Methods, Control Structures, Objectives, and Optimization Methodologies

Resonant controller of single‐stage off‐board EV charger in G2V and V2G modes

On Control of Energy Storage Systems in Microgrids

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