Search for: vehicle-to-grid
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    A Decision Framework for Participation of Electric Vehicles in Vehicle-to-Grid (V2G) Considering Players' Utility

    , Ph.D. Dissertation Sharif University of Technology Sarparandeh, Mohammad Hossein (Author) ; Ehsan, Mehdi (Supervisor)
    The inevitable emergence of electric vehicles into the transportation industry in the near future can be a potential challenge or an opportunity for the power system. Vehicle-to-Grid can provide services for microgrids and the electricity market. The players of the game for participation of electric vehicles in microgrid or electricity market are vehicle owners, microgrid operators, and the aggregators. The formation and continuation of this interaction requires the interests of all institutions involved in the subject to be considered. Since there has not yet been an established conceptual or executive framework for the utilization of these vehicles in Vehicle-to-Grid idea considering... 

    A Multi-objective Model Predictive Control Approach to the Energy Trading Problem in Vehicle-to-Grid System

    , M.Sc. Thesis Sharif University of Technology Karimi, Arash (Author) ; Haeri, Mohammad (Supervisor)
    Electric vehicles (EVs) will be used rampantly in future transportation system. Although the uncontrolled charging of these EVs will be threatening for the stability and sustainability of the grid, a well-suited energy trading policy may provide a number of beneficial services to the grid as well as preserving the sustainability of the system along with heightening the performance of operation. In this paper, by taking advantage of block rate tariff, a wholesale pricing policy is introduced. A multi-objective approach is utilized to address the cost reduction and load levelling services, concurrently, in order to guarantee the profits of the both the grid and EVs. Due to the high... 

    Operation of Microgrid with Electric Vehicles Management as Energy Storage Unit

    , M.Sc. Thesis Sharif University of Technology Hassanzadeh, Mohammad Mahdi (Author) ; Hosseini, Hamid (Supervisor)
    Microgrids will be key components of future smart grids that integrate distributed generation energy with local loads and units for greater efficiency. However, the uncertainty and intermittent nature of renewable energy products prevent the reliable operation of the micro-grids. On the other hand, the introduction of electric vehicles into the transportation industry can be both a challenge and an opportunity for the power grid. Using electric vehicle batteries as an energy storage system is a new work in the smart grid environment. Using an electric vehicle battery as a storage system makes it possible to create a grid with a lower operating cost because of the development of renewable... 

    Pricing of Vehicle-to-Grid Services in a Microgrid by Nash Bargaining Theory

    , Article Mathematical Problems in Engineering ; Volume 2017 , 2017 ; 1024123X (ISSN) Sarparandeh, M. H ; Ehsan, M ; Sharif University of Technology
    Hindawi Publishing Corporation  2017
    Owners of electric vehicles (EVs) can offer the storage capacity of their batteries to the operator of a microgrid as a service called vehicle-to-grid (V2G) to hold the balance between supply and demand of electricity, particularly when the microgrid has intermittent renewable energy sources. Literature review implies that V2G has economic benefits for both microgrid operator and EV owners, but it is unclear how these benefits are divided between them. The challenge grows when the policy makers rely on the V2G revenue as an incentive for expanding the penetration of EVs in the automotive market. This paper models the interaction between microgrid operator and EV owners as a bargaining game... 

    Network-Constrained transactive coordination for plug-in electric vehicles participation in real-time retail electricity markets

    , Article IEEE Transactions on Sustainable Energy ; Volume 12, Issue 2 , 2021 , Pages 1439-1448 ; 19493029 (ISSN) Saber, H ; Ehsan, M ; Moeini Aghtaie, M ; Fotuhi Firuzabad, M ; Lehtonen, M ; Sharif University of Technology
    Institute of Electrical and Electronics Engineers Inc  2021
    Uncoordinated adoption of plug-in electric vehicles (PEVs) imposes further load on the distribution network, and therefore may result in disruptive impacts on the grid. Transactive coordination of PEVs has been introduced as an effective approach to mitigate these negative consequences. This paper furthers efforts enabling PEVs to participate in a real-time retail electricity market under a transactive energy (TE) paradigm. In this regard, PEV owners will estimate their willingness to pay/accept using a user-friendly strategy and submit the estimated values to the retail market operator. Then using a network-constrained market clearing mechanism, the clearing prices, i.e., dual variables of... 

    Integrated bidirectional isolated soft-switched battery charger for vehicle-to-grid technology using 4-Switch 3Φ-rectifier

    , Article IECON Proceedings (Industrial Electronics Conference) ; November , 2013 , Pages 906-911 ; 9781479902248 (ISBN) Ebrahimi, S ; Taghavi, M ; Tahami, F ; Oraee, H ; Sharif University of Technology
    Battery and plug-in hybrid vehicles equipped with bidirectional battery chargers are capable of supplying power to the electric grid according to power system demand. This technology is called 'vehicle to grid' or V2G. A bidirectional on-board charger can be used to improve the charge availability. An on-board charger should have small size and light weight. On the other hand, the charger must minimize power quality impact, draw current at high power factor to maximize power from an outlet. In this paper, a new three-phase integrated bidirectional isolated soft-switched battery charger is proposed which is appropriate for vehicle to grid technology. The charger utilizes a 4-switch... 

    The plug-in electric vehicles for power system applications: The vehicle to grid (V2G) concept

    , Article 2012 IEEE International Energy Conference and Exhibition, ENERGYCON 2012 ; 2012 , Pages 1101-1106 ; 9781467314541 (ISBN) Hosseini, S. S ; Badri, A ; Parvania, M ; Sharif University of Technology
    The emergence and implementation of advanced smart grid technologies will enable enhanced utilization of electric vehicles (EVs) as mobile energy storage devices which can provide system-wide services. With significant penetration of EVs in the near future, the concept, introduced in literature as vehicle to grid (V2G), will be practically possible. The V2G concept eases the integration of renewable energy into power system and gives new force to inevitable move toward power generation by clean energy resources. Therefore utilizing energy storage in EVs is undeniable due to economic and environment benefits. The V2G concept has been the field of many researches in different aspects so far.... 

    Stochastic Reconfiguration and Optimal Coordination of V2G Plug-in Electric Vehicles Considering Correlated Wind Power Generation

    , Article IEEE Transactions on Sustainable Energy ; Volume 6, Issue 3 , 2015 , Pages 822-830 ; 19493029 (ISSN) Kavousi Fard, A ; Niknam, T ; Fotuhi Firuzabad, M ; Sharif University of Technology
    Institute of Electrical and Electronics Engineers Inc  2015
    This paper investigates the optimal operation of distribution feeder reconfiguration (DFR) strategy in the smart grids with high penetration of plug-in electric vehicles (PEVs) and correlated wind power generation. The increased utilization of PEVs in the system with stochastic volatile behavior along with the high penetration of renewable power sources such as wind turbines (WTs) can create new challenges in the system that will affect the DFR strategy greatly. In order to reach the most efficiency from the PEVs, the idea of vehicle-to-grid (V2G) is employed in this paper to make a bidirectional power flow (either charging/discharging or idle mode) strategy when providing the main charging... 

    An isolated bidirectional integrated plug-in hybrid electric vehicle battery charger with resonant converters

    , Article Electric Power Components and Systems ; Volume 44, Issue 12 , 2016 , Pages 1371-1383 ; 15325008 (ISSN) Ebrahimi, S ; Akbari, R ; Tahami, F ; Oraee, H ; Sharif University of Technology
    Taylor and Francis Inc  2016
    Plug-in hybrid electric vehicles draw electricity from the electrical grid and store energy in their batteries. To increase charge availability for plug-in hybrid electric vehicles, on-board chargers can be used, which should be small in size and lightweight. In this article, an on-board bidirectional soft-switched battery charger is proposed that utilizes a phase-shift-controlled dual-bridge series resonant converter with isolation. The bidirectional characteristic of proposed charger makes it suitable for vehicle-to-grid operation (i.e., injecting power from the vehicle to the grid) in smart grids. A switching control scheme is also proposed to provide soft-switching operation for all... 

    Charging/discharging management of electric vehicles: technical viewpoint

    , Article 2015 Smart Grid Conference, SGC 2015, 23 December 2015 through 24 December 2015 ; 2017 , Pages 158-163 ; 9781509003693 (ISBN) Farzin, H ; Fotuhi Firuzabad, M ; Moeini Aghtaie, M ; Sharif University of Technology
    Institute of Electrical and Electronics Engineers Inc  2017
    This paper investigates three different strategies for centralized charging/discharging management of electric vehicles, their features and the impacts on technical performance of distribution systems. Three goals of load factor maximization, load variance reduction and energy loss minimization are chosen as the main technical factors need to be optimized in the proposed electric vehicles charging/discharging management strategies. In this regard, at first, the mathematical model of these strategies for both cases of with/without vehicleto- grid (V2G) programs are extracted. Then, solving procedure of the attained optimization problems with different optimization methods are explained. These... 

    Robust optimization of renewable-based multi-energy micro-grid integrated with flexible energy conversion and storage devices

    , Article Sustainable Cities and Society ; Volume 64 , 2021 ; 22106707 (ISSN) Lekvan, A. A ; Habibifar, R ; Moradi, M ; Khoshjahan, M ; Nojavan, S ; Jermsittiparsert, K ; Sharif University of Technology
    Elsevier Ltd  2021
    This paper presents a new model for optimal scheduling of renewable-based multi-energy microgrid (MEM) systems incorporated with emerging high-efficient technologies such as electric vehicle (EVs) parking lots, power-to-gas (P2G) facility, and demand response programs. The proposed MEM is equipped with wind energy, multi-carrier energy storage technologies, boiler, combined heat and power unit, P2G, EVs, and demand response with the aim of total operational cost minimization. Meanwhile, the system operator can participate in three electricity, heat, and gas market to meet local demands as well as achieve desired profits through energy exchanges. The proposed MEM is exposed to high-level... 

    Generalized State-Plane analysis of bidirectional CLLC resonant converter

    , Article IEEE Transactions on Power Electronics ; 2021 ; 08858993 (ISSN) Rezayati, M ; Tahami, F ; Schanen, J ; Sarrazin, B ; Sharif University of Technology
    Institute of Electrical and Electronics Engineers Inc  2021
    The CLLC resonant converter is a promising candidate for high efficient, bidirectional power transfer applications such as vehicle-to-grid (V2G) on-board charger and hybrid vehicle DC-DC converter. Nevertheless, the analysis of CLLC still remains challenging because of its complex multi-resonant nature and several storage elements. In this paper, a circuit analysis method based on change of variables is presented that maps the state space equations into two decoupled sets of equations. The analyses are carried out in two state-plane coordinate systems, then the results are mapped onto the original region. The proposed method is then used to thoroughly analyze the CLLC resonant converter... 

    Proposing a Profit-Based Strategy for Optimal Energy Management at Electric Vehicles’ Public Parking Decks

    , M.Sc. Thesis Sharif University of Technology Zarei, Alireza (Author) ; Abbaspour Tehranifard, Ali (Supervisor) ; Fotuhi-Firuzabad, Mahmud (Co-Advisor)
    Over the last few years, several economical and environmental reasons have caused many countries throughout the world to plan to replace conventional gasoline vehicles with different types of electric vehicles, and hence, it is anticipated that using these vehicles will quickly be developed in near future. Widespread use of electric vehicles calls for a comprehensive network of easily accessible charging stations being capable of replenishing their batteries. In this regard, municipal public parking decks, because of their characteristics, can be considered as proper candidates for installing charging equipment. However, as a large number of electric vehicles can be parked at a public... 

    Long Term Impacts of Electricity Pricing Methods on Multi-Carrier Energy Systems with High PHEV Penetration

    , M.Sc. Thesis Sharif University of Technology Davari Nejad, Ehsan (Author) ; Ranjbar, Ali Mohammad (Supervisor)
    As far as reliable supply and cost-effective methods of power delivery to end-users are concerned, new advancements in smart grids and, in particular, smart pricing are of high significance to grid operators. In the recent decade, there has been a considerable raise in penetration of renewable energy resources and also the number of hybrid electric vehicles which can act as a huge mobile storage in the network. Hence, finding a practical and cost-effective method of management of all these new resources and avoiding potential problems associated with them seems to be of high importance. In this study, first, the response of demand to pricing signals has been modeledAfterwards, the response... 

    Generalized analytical approach to assess reliability of renewable-based energy hubs

    , Article IEEE Transactions on Power Systems ; Volume 32, Issue 1 , 2017 , Pages 368-377 ; 08858950 (ISSN) Moeini Aghtaie, M ; Farzin, H ; Fotuhi Firuzabad, M ; Amrollahi, R ; Sharif University of Technology
    Institute of Electrical and Electronics Engineers Inc  2017
    This paper proposes a generalized analytical approach to evaluate the reliability of active distribution networks. The studies are implemented in the context of renewable-based energy hubs. The reliability of energy demands is determined as a function of reliability characteristics of energy hub input resources and converters as well as hub operating strategies. The framework proposed in this paper involves the main attributes of different distributed generation technologies as well as vehicle-to-grid (V2G)-capable vehicles in the reliability studies. Dealing with the uncertainty in energy services provided by the wind turbine output generation and V2G programs, efficient probabilistic... 

    Game theory meets distributed model predictive control in vehicle-to-grid systems

    , Article 11th International Conference on Electrical and Electronics Engineering, ELECO 2019, 28 November 2019 through 30 November 2019 ; 2019 , Pages 764-768 ; 9786050112757 (ISBN) Karimi, A ; Haeri, M ; Sharif University of Technology
    Institute of Electrical and Electronics Engineers Inc  2019
    Electric Vehicles (EVs) will be used rampantly in future transportation system. Although the uncontrolled charging of these EVs will be threatening for the stability of the grid, a compatible energy trading policy may provide beneficial services to the grid as well as preserving the sustainability of the system. In this paper, by taking advantage of block rate tariff, a wholesale pricing policy is introduced. A multi-objective approach is utilized to address the cost reduction and load leveling services concurrently. Due to the high computational complexity of a centralized problem, a game theoretic approach is exerted in order to design decentralized controllers for EVs. Moreover, an MPC... 

    Day-ahead resource scheduling in distribution networks with presence of electric vehicles and distributed generation units

    , Article Electric Power Components and Systems ; Volume 47, Issue 16-17 , 2019 , Pages 1450-1463 ; 15325008 (ISSN) Shafiee, M ; Ghazi, R ; Moeini Aghtaie, M ; Sharif University of Technology
    Taylor and Francis Inc  2019
    In this paper a new framework for scheduling of available resources in the distribution networks is developed. In this respect attempts are focused on interactions between charging/discharging profiles of electric vehicles (EVs) and output power of distributed generation units. To reach this goal, the proposed framework is designed as a two-stage optimization procedure. In the first stage, the charging/discharging schedules of EVs are extracted running a linear programing optimization problem taking into account the EV users' constraints and requirements. The usage profiles of the DG units, strategy of buying electricity from the market and also the final charging/discharging patterns of the... 

    Joint expansion planning studies of EV parking lots placement and distribution network

    , Article IEEE Transactions on Industrial Informatics ; Volume 16, Issue 10 , October , 2020 , Pages 6455-6465 Mozaffari, M ; Askarian Abyaneh, H ; Jooshaki, M ; Moeini Aghtaie, M ; Sharif University of Technology
    IEEE Computer Society  2020
    Long-term distribution network planning (DNP) is considered as one of the most challenging issues for distribution network operators (DNOs). By increasing EVs in cities, it has appeared some new players such as electric vehicles (EVs) owners and electric vehicle parking lots (EVPLs) owners for DNP. In this article, we conduct a new study on the coupled dynamic expansion problem of EVPLs placement and distribution networks. To reach this goal, at first, EVs driving and charging/discharging behavior as some influential factors is modeled using an efficient probabilistic algorithm. An analytical model is then introduced to estimate the number of EVs in EVPLs at different times. To find out the... 

    A particle swarm optimization approach for robust unit commitment with significant vehicle to grid penetration

    , Article Iranian Conference on Intelligent Systems, ICIS 2014 ; 2014 Kherameh, A. E ; Aien, M ; Rashidinejad, M ; Fotuhi-Firouzabad, M
    Smartening of contemporaneous power delivery systems in conjunction with increased penetration of vehicle to grid (V2G) technology, changes the way market participants play their role in the market operation to maximize their profit. In V2G technology, plug-in electric vehicles (PEV) have bidirectional power flows i.e. they can either inject power to the grid or draw power from it. In recent years, the V2G technology has found a world wild attention due to its important advantages such as the peak load reduction and providing system reserve, to name a few. The unit commitment (UC) is a power system operation problem which is used to find the optimal operation schedule of generation units.... 

    A practical scheme to involve degradation cost of lithium-ion batteries in Vehicle-to-Grid applications

    , Article IEEE Transactions on Sustainable Energy ; Volume 7, Issue 4 , Volume 7, Issue 4 , 2016 , Pages 1730-1738 ; 19493029 (ISSN) Farzin, H ; Fotuhi Firuzabad, M ; Moeini Aghtaie, M ; Sharif University of Technology
    Institute of Electrical and Electronics Engineers Inc 
    This paper concentrates on degradation of electric vehicle (EV) lithium-ion batteries in vehicle-to-grid (V2G) programs and proposes a practical wear cost model for EVs charge scheduling applications. As the first step, all the factors affecting the cycle life of lithium-ion batteries are identified and their impacts on degradation process are investigated. Subsequently, a general model for battery loss of cycle life is devised incorporating all the pertinent factors associated with charging and discharging activities in V2G applications. Modeling the battery wear cost as a series of equal-payments over the cycle life, a mechanism for calculating the cost incurred by EV users due to...