Sharif Digital Repository

Plug-in hybrid electric vehicles (PHEVs) present environmental and energy security advantages versus conventional gasoline vehicles. In the near future, the number of PHEVs will likely grow significantly in the world. In spite of the aforementioned advantages, the connection of PHEVs to the power grid may create a series of new challenges for electric utilities. If PHEV penetration exceeds a certain amount it can endanger power system security. In this research, a new charging control scheme which includes both the customer and grid acquiescence is presented. Optimal charging algorithm is developed which minimizes the electrical charging payment of customers. The optimization problem in this... 

Due to the growing oil price and environmental considerations, tendency to use local and environmentally friendly energy sources has increased.Bidirectional transmission can be one of the key features of the smart grid,so the use of car battery connected to the grid as local energy sources makes sense. This can provide network stability, especially during peak load times. Vehicles connected to grid (V2G) is an electric vehicle or a plug-in hybrid electric vehicles can delivered the electricity to the grid. These systems require either two separate power electronic converters can be used for transmission in either directions or a two-way transfer charger. The aim of this project is to design... 

Despite the economic and environmental advantages of plug-in hybrid electric vehicles (PHEVs), the increased utilization of PHEVs brings up new concerns for power distribution system operators and planners. Impacts of PHEVs on distribution network, although has been proven to be noticeable, has not been completely investigated for future years. Thus, it is necessary to study precisely PHEV impacts on residential distribution systems and then try to find a method to control PHEV charging in order to improve distribution system.In this thesis, a comprehensive model is proposed to study PHEV impacts on residential distribution systems for short and long-term simulations. To do this, at first... 

Constantly rising fuel prices and environmental consciousness have caused alternative transport solutions to be considered.Recently, batteries and electric vehicle industries have developed to become a reasonable alternative for gasoline powered cars. Plug-In hybrid electric vehicles could be connected to the electrical grid to be recharged. To ease the charging process, one solution could use an on-board charger to charge the electric vehicle. This charger should be able to be connected to a conventional outlet for convenience reasons and moreover, it should be a grid friendly charger in order not to pollute the electrical network. After studying the introduced structures for electric... 

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... 

The presence of electric vehicle (EV) parking in distribution or microgrids can become a challenging issue for the power grid. If parking operators charge EVs parked in their parking facilities without coordination with the distribution or microgrid operator, they can impose a heavy burden on the grid, resulting in increased costs and problems in the power network. This study aims to address energy management in EV parking facilities in the distribution network by proposing a two-level model. In this two-level model, the high-level problem is the distribution network, and the low-level problem is the parking facility. At the high-level, the distribution network operator tries to maximize... 

The transportation and electricity industries are major emitters of greenhouse gases (GHGs). In order to reduce emissions, several strategies have been proposed, including plug-in electric vehicle (PEV) use and integration of renewable energy sources (RESs). To reduce the concern emission rate while considering economic constraints, it is important to examine different scenarios of incorporating these elements. To investigate the effectiveness of using PEVs and RES from various perspectives, this study utilizes a combined economic emission dispatch (CEED). The influence of emission and cost coefficients is examined in a sensitivity analysis. In the proposed model, two test cases containing...